{"action":"created","issue":{"url":"https://api.github.com/repos/servo/servo/issues/11262","repository_url":"https://api.github.com/repos/servo/servo","labels_url":"https://api.github.com/repos/servo/servo/issues/11262/labels{/name}","comments_url":"https://api.github.com/repos/servo/servo/issues/11262/comments","events_url":"https://api.github.com/repos/servo/servo/issues/11262/events","html_url":"https://github.com/servo/servo/pull/11262","id":155656478,"number":11262,"title":"Add `--version` flag","user":{"login":"campaul","id":552768,"avatar_url":"https://avatars.githubusercontent.com/u/552768?v=3","gravatar_id":"","url":"https://api.github.com/users/campaul","html_url":"https://github.com/campaul","followers_url":"https://api.github.com/users/campaul/followers","following_url":"https://api.github.com/users/campaul/following{/other_user}","gists_url":"https://api.github.com/users/campaul/gists{/gist_id}","starred_url":"https://api.github.com/users/campaul/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/campaul/subscriptions","organizations_url":"https://api.github.com/users/campaul/orgs","repos_url":"https://api.github.com/users/campaul/repos","events_url":"https://api.github.com/users/campaul/events{/privacy}","received_events_url":"https://api.github.com/users/campaul/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/servo/servo/labels/S-tests-failed","name":"S-tests-failed","color":"d4c5f9"}],"state":"open","locked":false,"assignee":{"login":"Manishearth","id":1617736,"avatar_url":"https://avatars.githubusercontent.com/u/1617736?v=3","gravatar_id":"","url":"https://api.github.com/users/Manishearth","html_url":"https://github.com/Manishearth","followers_url":"https://api.github.com/users/Manishearth/followers","following_url":"https://api.github.com/users/Manishearth/following{/other_user}","gists_url":"https://api.github.com/users/Manishearth/gists{/gist_id}","starred_url":"https://api.github.com/users/Manishearth/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Manishearth/subscriptions","organizations_url":"https://api.github.com/users/Manishearth/orgs","repos_url":"https://api.github.com/users/Manishearth/repos","events_url":"https://api.github.com/users/Manishearth/events{/privacy}","received_events_url":"https://api.github.com/users/Manishearth/received_events","type":"User","site_admin":false},"milestone":null,"comments":21,"created_at":"2016-05-19T05:24:03Z","updated_at":"2016-06-09T06:56:12Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/servo/servo/pulls/11262","html_url":"https://github.com/servo/servo/pull/11262","diff_url":"https://github.com/servo/servo/pull/11262.diff","patch_url":"https://github.com/servo/servo/pull/11262.patch"},"body":"- [X] `./mach build -d` does not report any errors\r\n- [X] `./mach test-tidy --faster` does not report any errors\r\n- [X] These changes fix #11241 (github issue number if applicable).\r\n\r\nEither:\r\n- [ ] There are tests for these changes OR\r\n- [ ] These changes do not require tests because _____\r\n\r\nNot 100% sure of a good way to test this, so I'm submitting as is for feedback. Manually testing it appears to work fine.\n\n<!-- Reviewable:start -->\n---\nThis change is [<img src=\"https://reviewable.io/review_button.svg\" height=\"35\" align=\"absmiddle\" alt=\"Reviewable\"/>](https://reviewable.io/reviews/servo/servo/11262)\n<!-- Reviewable:end -->\n"},"comment":{"url":"https://api.github.com/repos/servo/servo/issues/comments/224814976","html_url":"https://github.com/servo/servo/pull/11262#issuecomment-224814976","issue_url":"https://api.github.com/repos/servo/servo/issues/11262","id":224814976,"user":{"login":"highfive","id":5750442,"avatar_url":"https://avatars.githubusercontent.com/u/5750442?v=3","gravatar_id":"","url":"https://api.github.com/users/highfive","html_url":"https://github.com/highfive","followers_url":"https://api.github.com/users/highfive/followers","following_url":"https://api.github.com/users/highfive/following{/other_user}","gists_url":"https://api.github.com/users/highfive/gists{/gist_id}","starred_url":"https://api.github.com/users/highfive/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/highfive/subscriptions","organizations_url":"https://api.github.com/users/highfive/orgs","repos_url":"https://api.github.com/users/highfive/repos","events_url":"https://api.github.com/users/highfive/events{/privacy}","received_events_url":"https://api.github.com/users/highfive/received_events","type":"User","site_admin":false},"created_at":"2016-06-09T06:56:12Z","updated_at":"2016-06-09T06:56:12Z","body":"      ▶ CRASH [expected TIMEOUT] /eventsource/dedicated-worker/eventsource-close.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10a5db72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10a5e1c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10a5e18aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10a3ba3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10a5c9474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10a3a80c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10a3b9188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x108c7819f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x108aec9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10a5e11bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10a5e4f5b - __rust_try\n      │   12:        0x10a5e4ef5 - __rust_maybe_catch_panic\n      │   13:        0x10a5e0fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000111488bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000111488b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010fce7f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000011146e3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000011167d474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5</span><span class=\"stdout\">  - 0x0000000111696276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000011167eab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000111695ecf - rust_begin_unwind\n      │ frame #8  - 0x00000001116bcd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010fc80f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010fcf59fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010fce6ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000111698f5b - __rust_try\n      │ frame #13 - 0x0000000111698ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010fce77e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001116949d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ thread &#39;ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;PaintWorker&#39; panicked at &#39;thread &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;../src/libcore/result.rsPaintWorker:785PaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;\n      │ &#39;, ../src/libcore/result.rsstack backtrace:\n      │ :thread &#39;785PaintWorker\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError&#39;, &#39;, ../src/libcore/result.rs:785\n      │ ../src/libcore/result.rs:&#39; panicked at &#39;785\n      │ &#39;, ../src/libcore/result.rs:called `Result::unwrap()` on an `Err` value: RecvError785&#39;,\n      └ ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected OK] /eventsource/dedicated-worker/eventsource-constructor-non-same-origin.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10aed572b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10aedbc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10aedb8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10acb43ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10aec3474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10aca20c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10acb3188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10957219f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1093e69fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10aedb1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10aedef5b - __rust_try\n      │   12:        0x10aedeef5 - __rust_maybe_catch_panic\n      │   13:        0x10aedafe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010e22cbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010e22cb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010ca8bf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010e2123b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010e421474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010e43a276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010e422ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010e439ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010e460d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010ca24f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010ca999fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010ca8aea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010e43cf5b - __rust_try\n      │ frame #13 - 0x000000010e43cef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010ca8b7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010e4389d8 - std::sys::ththread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ read::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected OK] /eventsource/dedicated-worker/eventsource-constructor-url-bogus.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1113cd72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1113d3c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1113d38aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1111ac3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1113bb474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x11119a0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1111ab188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10fa6a19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10f8de9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1113d31bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1113d6f5b - __rust_try\n      │   12:        0x1113d6ef5 - __rust_maybe_catch_panic\n      │   13:        0x1113d2fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000105d74bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000105d74b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x00000001045d3f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000105d5a3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000105f69474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000105f82276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000105f6aab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000105f81ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000105fa8d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010456cf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001045e19fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x00000001045d2ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000105f84f5b - __rust_try\n      │ frame #13 - 0x0000000105f84ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001045d37e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000105f809d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      └ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/dedicated-worker/eventsource-onmesage.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │</span><span class=\"stdout\">    1:        0x101fb272b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x101fb8c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x101fb88aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x101d913ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x101fa0474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x101d7f0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x101d90188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10064f19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1004c39fe - servo::main::h6924e5658370f6b5\n      │   10:        0x101fb81bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x101fbbf5b - __rust_try\n      │   12:        0x101fbbef5 - __rust_maybe_catch_panic\n      │   13:        0x101fb7fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010776cbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010776cb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000105fcbf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001077523b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000107961474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010797a276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000107962ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000107979ecf - rust_begin_unwind\n      │ frame #8  - 0x00000001079a0d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000105f64f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x0000000105fd99fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000105fcaea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010797cf5b - __rust_try\n      │ frame #13 - 0x000000010797cef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x0000000105fcb7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001079789d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      └ thread &#39;\n    \n      ▶ CRASH [expected OK] /eventsource/dedicated-worker/eventsource-url.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x102e2072b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x102e26c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x102e268aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x102bff3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x102e0e474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x102bed0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x102bfe188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x1014bd19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1013319fe - servo::main::h6924e5658370f6b5\n      │   10:        0x102e261bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x102e29f5b - __rust_try\n      │   12:        0x102e29ef5 - __rust_maybe_catch_panic\n      │   13:        0x102e25fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ \n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000110065bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000110065b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010e8c4f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000011004b3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000011025a474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000110273276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000011025bab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000110272ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000110299d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010e85df5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010e8d29fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010e8c3ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000110275f5b - __rust_try\n      │ frame #13 - 0x0000000110275ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010e8c47e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001102719d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/dedicated-worker/eventsource-eventtarget.worker\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x103b0672b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x103b0cc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x103b0c8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1038e53ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x103af4474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1038d30c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1038e4188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x1021a319f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1020179fe - servo::main::h6924e5658370f6b5\n      │   10:        0x103b0c1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x103b0ff5b - __rust_try\n      │   12:        0x103b0fef5 - __rust_maybe_catch_panic\n      │   13:        0x103b0bfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010c611bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010c611b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010ae70f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010c5f73b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010c806474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010c81f276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010c807ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010c81eecf - rust_begin_unwind\n      │ frame #8  - 0x000000010c845d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010ae09f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010ae7e9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010ae6fea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010c821f5b - __rust_try\n      │ frame #13 - 0x000000010c821ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010ae707e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010c81d9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n     </span><span class=\"stdout\"> │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ 785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/dedicated-worker/eventsource-onopen.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x105e8d72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x105e93c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x105e938aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x105c6c3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x105e7b474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x105c5a0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x105c6b188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10452a19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10439e9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x105e931bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x105e96f5b - __rust_try\n      │   12:        0x105e96ef5 - __rust_maybe_catch_panic\n      │   13:        0x105e92fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000110fb6bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000110fb6b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010f815f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000110f9c3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x00000001111ab474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x00000001111c4276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x00000001111acab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x00000001111c3ecf - rust_begin_unwind\n      │ frame #8  - 0x00000001111ead50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010f7aef5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010f8239fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010f814ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x00000001111c6f5b - __rust_try\n      │ frame #13 - 0x00000001111c6ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010f8157e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001111c29d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected OK] /eventsource/dedicated-worker/eventsource-prototype.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x110c9372b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x110c99c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x110c998aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x110a723ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x110c81474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x110a600c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x110a71188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10f33019f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10f1a49fe - servo::main::h6924e5658370f6b5\n      │   10:        0x110c991bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x110c9cf5b - __rust_try\n      │   12:        0x110c9cef5 - __rust_maybe_catch_panic\n      │   13:        0x110c98fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010a973bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010a973b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x00000001091d2f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010a9593b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010ab68474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010ab81276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010ab69ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010ab80ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010aba7d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010916bf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001091e09fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x00000001091d1ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010ab83f5b - __rust_try\n      │ frame #13 - 0x000000010ab83ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001091d27e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010ab7f9d8 - std::sys::ththread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ read::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/eventsource-close.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10392372b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x103929c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1039298aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1037023ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x103911474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1036f00c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x103701188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x101fc019f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x101e349fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1039291bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10392cf5b - __rust_try\n      │   12:        0x10392cef5 - __rust_maybe_catch_panic\n      │   13:        0x103928fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorkerthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../sr</span><span class=\"stdout\">c/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:thread &#39;PaintWorker785&#39; panicked at &#39;\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ &#39;, ../src/libcore/result.rsthread &#39;:PaintWorker785ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ../src/libcore/result.rs:&#39; panicked at &#39;785\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ \n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000011072dbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000011072db31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010ef8cf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001107133b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000110922474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000011093b276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000110923ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000011093aecf - rust_begin_unwind\n      │ frame #8  - 0x0000000110961d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010ef25f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010ef9a9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010ef8bea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000011093df5b - __rust_try\n      │ frame #13 - 0x000000011093def5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010ef8c7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001109399d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/event-data.html\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1057ff72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x105805c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1058058aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1055de3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1057ed474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1055cc0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1055dd188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x103e9c19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x103d109fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1058051bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x105808f5b - __rust_try\n      │   12:        0x105808ef5 - __rust_maybe_catch_panic\n      │   13:        0x105804fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000106750bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000106750b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000104faff65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001067363b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000106945474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010695e276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000106946ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010695decf - rust_begin_unwind\n      │ frame #8  - 0x0000000106984d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000104f48f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x0000000104fbd9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000104faeea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000106960f5b - __rust_try\n      │ frame #13 - 0x0000000106960ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x0000000104faf7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010695c9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ thread &#39;thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, :PaintWorker\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/eventsource-constructor-document-domain.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10630372b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x106309c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1063098aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1060e23ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1062f1474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1060d00c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1060e1188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x1049a019f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1048149fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1063091bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10630cf5b - __rust_try\n      │   12:        0x10630cef5 - __rust_maybe_catch_panic\n      │   13:        0x106308fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000102d09bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000102d09b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000101568f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000102cef3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000102efe474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000102f17276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000102effab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000102f16ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000102f3dd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000101501f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001015769fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000101567ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000102f19f5b - __rust_try\n      │ frame #13 - 0x0000000102f19ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001015687e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000102f159d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      └ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH </span><span class=\"stdout\">[expected TIMEOUT] /eventsource/eventsource-constructor-stringify.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10b2d372b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10b2d9c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10b2d98aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10b0b23ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10b2c1474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10b0a00c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10b0b1188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10997019f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1097e49fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10b2d91bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10b2dcf5b - __rust_try\n      │   12:        0x10b2dcef5 - __rust_maybe_catch_panic\n      │   13:        0x10b2d8fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x00000001030bfbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x00000001030bfb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010191ef65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001030a53b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x00000001032b4474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x00000001032cd276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x00000001032b5ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x00000001032ccecf - rust_begin_unwind\n      │ frame #8  - 0x00000001032f3d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x00000001018b7f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010192c9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010191dea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x00000001032cff5b - __rust_try\n      │ frame #13 - 0x00000001032cfef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010191e7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001032cb9d8 - std::sys::ththread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ read::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected OK] /eventsource/eventsource-constructor-url-multi-window.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10f5cf72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10f5d5c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10f5d58aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10f3ae3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10f5bd474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10f39c0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10f3ad188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10dc6c19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10dae09fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10f5d51bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10f5d8f5b - __rust_try\n      │   12:        0x10f5d8ef5 - __rust_maybe_catch_panic\n      │   13:        0x10f5d4fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010cb4bbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010cb4bb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010b3aaf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010cb313b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010cd40474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010cd59276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010cd41ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010cd58ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010cd7fd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010b343f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010b3b89fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010b3a9ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010cd5bf5b - __rust_try\n      │ frame #13 - 0x000000010cd5bef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010b3aa7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010cd579d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;thread &#39;PaintWorker&#39; panicked at &#39;../src/libcore/result.rscalled `Result::unwrap()` on an `Err` value: RecvError:&#39;, thread &#39;PaintWorkerPaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, &#39; panicked at &#39;785../src/libcore/result.rsthread &#39;:PaintWorker785&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;,\n      │ \n      └ ../src/libcore/result.rscalled `Result::unwrap()` on an `Err` value: RecvError\n    \n      ▶ CRASH [expected OK] /eventsource/eventsource-constructor-url-bogus.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10947b72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x109481c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1094818aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10925a3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x109469474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1092480c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x109259188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x107b1819f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10798c9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1094811bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x109484f5b - __rust_try\n      │   12:        0x109484ef5 - __rust_maybe_catch_panic\n      │   13:        0x109480fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x00000001109b4bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x00000001109b4b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010f213f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000011099a3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000110ba9474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000110bc2276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000110baaab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000110bc1ecf - rust_begin_unwind\n      │ frame</span><span class=\"stdout\"> #8  - 0x0000000110be8d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010f1acf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010f2219fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010f212ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000110bc4f5b - __rust_try\n      │ frame #13 - 0x0000000110bc4ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010f2137e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000110bc09d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;stack backtrace:\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ thread &#39;\n    \n      ▶ CRASH [expected OK] /eventsource/eventsource-constructor-non-same-origin.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x104ee272b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x104ee8c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x104ee88aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x104cc13ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x104ed0474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x104caf0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x104cc0188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10357f19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1033f39fe - servo::main::h6924e5658370f6b5\n      │   10:        0x104ee81bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x104eebf5b - __rust_try\n      │   12:        0x104eebef5 - __rust_maybe_catch_panic\n      │   13:        0x104ee7fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010e892bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010e892b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010d0f1f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010e8783b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010ea87474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010eaa0276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010ea88ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010ea9fecf - rust_begin_unwind\n      │ frame #8  - 0x000000010eac6d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010d08af5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010d0ff9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010d0f0ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010eaa2f5b - __rust_try\n      │ frame #13 - 0x000000010eaa2ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010d0f17e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010ea9e9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorkerthread &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;PaintWorker../src/libcore/result.rs:PaintWorker785&#39; panicked at &#39;\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ../src/libcore/result.rs:&#39; panicked at &#39;785called `Result::unwrap()` on an `Err` value: RecvError\n      └ &#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/eventsource-cross-origin.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10e6ee72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10e6f4c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10e6f48aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10e4cd3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10e6dc474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10e4bb0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10e4cc188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10cd8b19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10cbff9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10e6f41bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10e6f7f5b - __rust_try\n      │   12:        0x10e6f7ef5 - __rust_maybe_catch_panic\n      │   13:        0x10e6f3fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000104b0fbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000104b0fb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010336ef65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000104af53b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000104d04474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000104d1d276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000104d05ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000104d1cecf - rust_begin_unwind\n      │ frame #8  - 0x0000000104d43d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000103307f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010337c9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010336dea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000104d1ff5b - __rust_try\n      │ frame #13 - 0x0000000104d1fef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010336e7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000104d1b9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorkerthread &#39;PaintWorker:785&#39; panicked at &#39;\n      │ stack backtrace:\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsthread &#39;:PaintWorker785&#39; panicked at &#39;\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsthread &#39;thread &#39;PaintWorkerPaintWorker../src/libcore/result.rs&#39; panicked at &#39;:called `Result::unwrap()` on an `Err` value: RecvError785&#39;,\n      │ ../src/libcore/result.rs:&#39; panicked at &#39;785called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ../src/libcore/result.rs:785\n      └ :785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/eventsource-onmessage.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x107c0772b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x107c0dc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x107c0d8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1079e63ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x107bf5474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1079d40c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1079e5188 - util::opts::set_</span><span class=\"stdout\">defaults::h07daffc7a99198d8\n      │    8:        0x1062a419f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1061189fe - servo::main::h6924e5658370f6b5\n      │   10:        0x107c0d1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x107c10f5b - __rust_try\n      │   12:        0x107c10ef5 - __rust_maybe_catch_panic\n      │   13:        0x107c0cfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000108804bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000108804b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000107063f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001087ea3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x00000001089f9474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000108a12276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x00000001089faab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000108a11ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000108a38d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000106ffcf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001070719fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000107062ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000108a14f5b - __rust_try\n      │ frame #13 - 0x0000000108a14ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001070637e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000108a109d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ thread &#39;thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;,\n      │ &#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ ../src/libcore/result.rs:785\n      └ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/eventsource-onopen.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x11072d72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x110733c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1107338aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x11050c3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x11071b474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1104fa0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x11050b188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10edca19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10ec3e9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1107331bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x110736f5b - __rust_try\n      │   12:        0x110736ef5 - __rust_maybe_catch_panic\n      │   13:        0x110732fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError785\n      │ \n      │ :785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000108b7bbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000108b7bb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x00000001073daf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000108b613b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000108d70474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000108d89276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000108d71ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000108d88ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000108dafd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000107373f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001073e89fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x00000001073d9ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000108d8bf5b - __rust_try\n      │ frame #13 - 0x0000000108d8bef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001073da7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000108d879d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected OK] /eventsource/eventsource-prototype.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10d91672b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10d91cc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10d91c8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10d6f53ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10d904474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10d6e30c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10d6f4188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10bfb319f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10be279fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10d91c1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10d91ff5b - __rust_try\n      │   12:        0x10d91fef5 - __rust_maybe_catch_panic\n      │   13:        0x10d91bfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000011104bbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000011104bb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010f8aaf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001110313b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000111240474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000111259276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000111241ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000111258ecf - rust_begin_unwind\n      │ frame #8  - 0x000000011127fd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010f843f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010f8b89fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010f8a9ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000011125bf5b - __rust_try\n      │ frame #13 - 0x000000011125bef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010f8aa7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001112579d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: Recv</span><span class=\"stdout\">Error&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;thread &#39;\n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!PaintWorkerPaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs&#39;, :785\n      │ ../src/libcore/result.rs:785\n      └ \n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/eventsource-reconnect.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10308372b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x103089c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1030898aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x102e623ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x103071474 - std::panicking::rust_panic_with_h</span><span class=\"stdout\">ook::h983af77c1a2e581b\n      │    6:        0x102e500c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x102e61188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10172019f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1015949fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1030891bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10308cf5b - __rust_try\n      │   12:        0x10308cef5 - __rust_maybe_catch_panic\n      │   13:        0x103088fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010e55bbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010e55bb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010cdbaf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010e5413b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010e750474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010e769276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010e751ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010e768ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010e78fd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010cd53f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010cdc89fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010cdb9ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010e76bf5b - __rust_try\n      │ frame #13 - 0x000000010e76bef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010cdba7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010e7679d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected OK] /eventsource/eventsource-request-cancellation.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x104dc672b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x104dccc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x104dcc8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x104ba53ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x104db4474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x104b930c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x104ba4188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10346319f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1032d79fe - servo::main::h6924e5658370f6b5\n      │   10:        0x104dcc1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x104dcff5b - __rust_try\n      │   12:        0x104dcfef5 - __rust_maybe_catch_panic\n      │   13:        0x104dcbfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000104706bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000104706b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000102f65f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001046ec3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x00000001048fb474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000104914276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x00000001048fcab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000104913ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010493ad50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000102efef5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x0000000102f739fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000102f64ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000104916f5b - __rust_try\n      │ frame #13 - 0x0000000104916ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x0000000102f657e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001049129d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/eventsource-eventtarget.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1055be72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1055c4c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1055c48aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10539d3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1055ac474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10538b0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10539c188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x103c5b19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x103acf9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1055c41bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1055c7f5b - __rust_try\n      │   12:        0x1055c7ef5 - __rust_maybe_catch_panic\n      │   13:        0x1055c3fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010d619bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010d619b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010be78f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010d5ff3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010d80e474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010d827276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010d80fab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010d826ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010d84dd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010be11f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010be869fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010be77ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010d829f5b - __rust_try\n      │ frame #13 - 0x000000010d829ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010be787e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010d8259d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      └ &#39;,\n    \n      ▶ CRASH [expected OK] /eventsource/eventsource-url.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/o</span><span class=\"stdout\">pts.rs:867\n      │ stack backtrace:\n      │    1:        0x107f8472b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x107f8ac9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x107f8a8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x107d633ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x107f72474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x107d510c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x107d62188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10662119f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1064959fe - servo::main::h6924e5658370f6b5\n      │   10:        0x107f8a1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x107f8df5b - __rust_try\n      │   12:        0x107f8def5 - __rust_maybe_catch_panic\n      │   13:        0x107f89fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000105dedbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000105dedb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010464cf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000105dd33b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000105fe2474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000105ffb276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000105fe3ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000105ffaecf - rust_begin_unwind\n      │ frame #8  - 0x0000000106021d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x00000001045e5f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010465a9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010464bea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000105ffdf5b - __rust_try\n      │ frame #13 - 0x0000000105ffdef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010464c7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000105ff99d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785thread &#39;\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-bom-2.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x105b7172b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x105b77c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x105b778aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1059503ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x105b5f474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10593e0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10594f188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10420e19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1040829fe - servo::main::h6924e5658370f6b5\n      │   10:        0x105b771bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x105b7af5b - __rust_try\n      │   12:        0x105b7aef5 - __rust_maybe_catch_panic\n      │   13:        0x105b76fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsthread &#39;:785\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010f043bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010f043b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010d8a2f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010f0293b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010f238474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010f251276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010f239ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010f250ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010f277d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010d83bf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010d8b09fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010d8a1ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010f253f5b - __rust_try\n      │ frame #13 - 0x000000010f253ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010d8a27e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010f24f9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-bom.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1083a472b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1083aac9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1083aa8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1081833ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x108392474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1081710c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x108182188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x106a4119f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1068b59fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1083aa1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1083adf5b - __rust_try\n      │   12:        0x1083adef5 - __rust_maybe_catch_panic\n      │   13:        0x1083a9fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:thread &#39;PaintWorkerERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010b6a1bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010b6a1b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000109f00f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010b6873b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010b896474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010b8af276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010b897ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010b8aeecf - rust_begin_unwind\n      │ frame #8  - 0x000000010b8d5d50 - core::panicking::pa</span><span class=\"stdout\">nic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000109e99f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x0000000109f0e9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000109effea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010b8b1f5b - __rust_try\n      │ frame #13 - 0x000000010b8b1ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x0000000109f007e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010b8ad9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ 785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs&#39; panicked at &#39;:called `Result::unwrap()` on an `Err` value: RecvError785\n      │ &#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-comments.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10a9f972b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10a9ffc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10a9ff8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10a7d83ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10a9e7474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10a7c60c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10a7d7188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10909619f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x108f0a9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10a9ff1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10aa02f5b - __rust_try\n      │   12:        0x10aa02ef5 - __rust_maybe_catch_panic\n      │   13:        0x10a9fefe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;:785\n      │ \n      │ stack backtrace:\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ../src/libcore/result.rs:785\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010ccc6bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010ccc6b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010b525f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010ccac3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010cebb474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010ced4276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010cebcab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010ced3ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010cefad50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010b4bef5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010b5339fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010b524ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010ced6f5b - __rust_try\n      │ frame #13 - 0x000000010ced6ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010b5257e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010ced29d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-data-before-final-empty-line.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x106ffa72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x107000c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1070008aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x106dd93ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x106fe8474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x106dc70c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x106dd8188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10569719f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10550b9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1070001bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x107003f5b - __rust_try\n      │   12:        0x107003ef5 - __rust_maybe_catch_panic\n      │   13:        0x106ffffe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorkerthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;\n      │ called `Result::unwrap()` on an `Err` value: RecvError:785\n      │ \n      │ &#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000011178abae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000011178ab31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010ffe9f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001117703b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000011197f474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000111998276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000111980ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000111997ecf - rust_begin_unwind\n      │ frame #8  - 0x00000001119bed50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010ff82f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010fff79fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010ffe8ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000011199af5b - __rust_try\n      │ frame #13 - 0x000000011199aef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010ffe97e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001119969d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-data.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1049d872b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1049dec9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1049de8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1047b73ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1049c6474 - std::panicking:</span><span class=\"stdout\">:rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1047a50c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1047b6188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10307519f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x102ee99fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1049de1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1049e1f5b - __rust_try\n      │   12:        0x1049e1ef5 - __rust_maybe_catch_panic\n      │   13:        0x1049ddfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x00000001090fcbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x00000001090fcb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010795bf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001090e23b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x00000001092f1474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010930a276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x00000001092f2ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000109309ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000109330d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x00000001078f4f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001079699fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010795aea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010930cf5b - __rust_try\n      │ frame #13 - 0x000000010930cef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010795b7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001093089d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;../src/libcore/result.rsPaintWorker:&#39; panicked at &#39;785called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, stack backtrace:\n      │ ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ :\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-event.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x107e4872b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x107e4ec9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x107e4e8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x107c273ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x107e36474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x107c150c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x107c26188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x1064e519f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1063599fe - servo::main::h6924e5658370f6b5\n      │   10:        0x107e4e1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x107e51f5b - __rust_try\n      │   12:        0x107e51ef5 - __rust_maybe_catch_panic\n      │   13:        0x107e4dfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010c8debae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010c8deb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010b13df65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010c8c43b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010cad3474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010caec276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010cad4ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010caebecf - rust_begin_unwind\n      │ frame #8  - 0x000000010cb12d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010b0d6f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010b14b9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010b13cea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010caeef5b - __rust_try\n      │ frame #13 - 0x000000010caeeef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010b13d7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010caea9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-id-2.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10956072b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x109566c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1095668aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10933f3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10954e474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10932d0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10933e188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x107bfd19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x107a719fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1095661bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x109569f5b - __rust_try\n      │   12:        0x109569ef5 - __rust_maybe_catch_panic\n      │   13:        0x109565fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorkerERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010e3b5bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010e3b5b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010cc14f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010e39b3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010e5aa474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010e5c3276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010e5abab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010e5c2ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010e5e9d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010cbadf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010cc229fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010cc13ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010e5c5f5b - __rust_try\n      │ frame #13 - 0x000000010e5c5ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010cc147e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010e5c19d8 - std::sys::thread::Thread::new::thread_start::h9c</span><span class=\"stdout\">883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsthread &#39;PaintWorker&#39; panicked at &#39;thread &#39;PaintWorker::785called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ../src/libcore/result.rs:785\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ 785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-event-empty.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x102da372b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x102da9c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x102da98aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x102b823ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x102d91474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x102b700c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x102b81188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10144019f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1012b49fe - servo::main::h6924e5658370f6b5\n      │   10:        0x102da91bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x102dacf5b - __rust_try\n      │   12:        0x102dacef5 - __rust_maybe_catch_panic\n      │   13:        0x102da8fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000011157fbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000011157fb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010fddef65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001115653b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000111774474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000011178d276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000111775ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000011178cecf - rust_begin_unwind\n      │ frame #8  - 0x00000001117b3d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010fd77f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010fdec9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010fdddea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000011178ff5b - __rust_try\n      │ frame #13 - 0x000000011178fef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010fdde7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000011178b9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785PaintWorkerPaintWorker\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-id.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10b07072b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10b076c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10b0768aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10ae4f3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10b05e474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10ae3d0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10ae4e188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10970d19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1095819fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10b0761bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10b079f5b - __rust_try\n      │   12:        0x10b079ef5 - __rust_maybe_catch_panic\n      │   13:        0x10b075fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000109bddbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000109bddb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010843cf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000109bc33b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000109dd2474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000109deb276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000109dd3ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000109deaecf - rust_begin_unwind\n      │ frame #8  - 0x0000000109e11d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x00000001083d5f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010844a9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010843bea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000109dedf5b - __rust_try\n      │ frame #13 - 0x0000000109dedef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010843c7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000109de99d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-retry-bogus.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x11062172b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x110627c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1106278aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1104003ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x11060f474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1103ee0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1103ff188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10ecbe19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10eb329fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1106271bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x11062af5b - __rust_try\n      │   12:        0x11062aef5 - __rust_maybe_catch_panic\n      │   13:        0x110626fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000108d25bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000108d25b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000107584f65 - _&lt;F as alloc..boxe</span><span class=\"stdout\">d..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000108d0b3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000108f1a474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000108f33276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000108f1bab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000108f32ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000108f59d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010751df5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001075929fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000107583ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000108f35f5b - __rust_try\n      │ frame #13 - 0x0000000108f35ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001075847e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000108f319d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;PaintWorker785&#39; panicked at &#39;\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorkerthread &#39;stack backtrace:\n      │ thread &#39;PaintWorker../src/libcore/result.rs&#39; panicked at &#39;:called `Result::unwrap()` on an `Err` value: RecvError785&#39;, ../src/libcore/result.rs&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError:785\n      │ &#39;, ../src/libcore/result.rs:785\n      │ &#39;,\n      └ ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-parsing.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10860372b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x108609c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1086098aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1083e23ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1085f1474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1083d00c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1083e1188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x106ca019f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x106b149fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1086091bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10860cf5b - __rust_try\n      │   12:        0x10860cef5 - __rust_maybe_catch_panic\n      │   13:        0x108608fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;thread &#39;PaintWorkerPaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010f17cbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010f17cb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010d9dbf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010f1623b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010f371474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010f38a276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010f372ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010f389ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010f3b0d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010d974f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010d9e99fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010d9daea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010f38cf5b - __rust_try\n      │ frame #13 - 0x000000010f38cef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010d9db7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010f3889d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ thread &#39;ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!thread &#39;&#39; panicked at &#39;thread &#39;PaintWorkerPaintWorkercalled `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;\n      │ &#39;, &#39;, ../src/libcore/result.rs:PaintWorker../src/libcore/result.rs&#39; panicked at &#39;:thread &#39;785PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError&#39;, &#39; panicked at &#39;../src/libcore/result.rs\n      │ :called `Result::unwrap()` on an `Err` value: RecvError&#39;, stack backtrace:\n      │ ../src/libcore/result.rs785\n      │ 785:called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs785:\n      │ 785\n      │ &#39;, ../src/libcore/result.rs\n      └ :785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-leading-space.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1109f672b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1109fcc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1109fc8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1107d53ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1109e4474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1107c30c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1107d4188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10f09319f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10ef079fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1109fc1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1109fff5b - __rust_try\n      │   12:        0x1109ffef5 - __rust_maybe_catch_panic\n      │   13:        0x1109fbfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000104a27bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000104a27b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000103286f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000104a0d3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000104c1c474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000104c35276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000104c1dab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000104c34ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000104c5bd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010321ff5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001032949fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000103285ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000104c37f5b - __rust_try\n      │ frame #13 - 0x0000000104c37ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001032867e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000104c339d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ thread &#39;PaintWorkerERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!&#39; panicked at &#39;\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;../src/libcore/result.rsPaintWorker:&#39; panicked at &#39;785called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ../src/libcore/result.rs:785\n      └ &#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-mime-bogus.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.</span><span class=\"stdout\">is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1071f072b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1071f6c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1071f68aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x106fcf3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1071de474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x106fbd0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x106fce188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10588d19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1057019fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1071f61bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1071f9f5b - __rust_try\n      │   12:        0x1071f9ef5 - __rust_maybe_catch_panic\n      │   13:        0x1071f5fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000111226bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000111226b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010fa85f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000011120c3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000011141b474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000111434276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000011141cab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000111433ecf - rust_begin_unwind\n      │ frame #8  - 0x000000011145ad50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010fa1ef5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010fa939fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010fa84ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000111436f5b - __rust_try\n      │ frame #13 - 0x0000000111436ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010fa857e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001114329d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ &#39;, thread &#39;../src/libcore/result.rsPaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ :785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-unknown.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10e1f572b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10e1fbc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10e1fb8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10dfd43ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10e1e3474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10dfc20c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10dfd3188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10c89219f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10c7069fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10e1fb1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10e1fef5b - __rust_try\n      │   12:        0x10e1feef5 - __rust_maybe_catch_panic\n      │   13:        0x10e1fafe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000104d9bbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000104d9bb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x00000001035faf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000104d813b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000104f90474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000104fa9276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000104f91ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000104fa8ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000104fcfd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000103593f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001036089fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x00000001035f9ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000104fabf5b - __rust_try\n      │ frame #13 - 0x0000000104fabef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001035fa7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000104fa79d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      └ \n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-mime-trailing-semicolon.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x109e8c72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x109e92c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x109e928aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x109c6b3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x109e7a474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x109c590c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x109c6a188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10852919f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10839d9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x109e921bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x109e95f5b - __rust_try\n      │   12:        0x109e95ef5 - __rust_maybe_catch_panic\n      │   13:        0x109e91fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;thread &#39;PaintWorkerPaintWorker&#39; panicked at &#39;ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;&#39;, ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010b291bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010b291b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #</span><span class=\"stdout\">2  - 0x0000000109af0f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010b2773b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010b486474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010b49f276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010b487ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010b49eecf - rust_begin_unwind\n      │ frame #8  - 0x000000010b4c5d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000109a89f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x0000000109afe9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000109aefea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010b4a1f5b - __rust_try\n      │ frame #13 - 0x000000010b4a1ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x0000000109af07e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010b49d9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ called `Result::unwrap()` on an `Err` value: RecvError../src/libcore/result.rs&#39;, ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!../src/libcore/result.rs\n      │ :785\n      └ :785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-retry-empty.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x104c3672b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x104c3cc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x104c3c8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x104a153ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x104c24474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x104a030c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x104a14188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x1032d319f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1031479fe - servo::main::h6924e5658370f6b5\n      │   10:        0x104c3c1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x104c3ff5b - __rust_try\n      │   12:        0x104c3fef5 - __rust_maybe_catch_panic\n      │   13:        0x104c3bfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010ce01bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010ce01b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010b660f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010cde73b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010cff6474 - std::panicking::rust_panic_with_hook::h983af77c1</span><span class=\"stdout\">a2e581b\n      │ frame #5  - 0x000000010d00f276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010cff7ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010d00eecf - rust_begin_unwind\n      │ frame #8  - 0x000000010d035d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010b5f9f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010b66e9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010b65fea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010d011f5b - __rust_try\n      │ frame #13 - 0x000000010d011ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010b6607e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010d00d9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      └ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-field-retry.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x11122e72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x111234c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1112348aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x11100d3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x11121c474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x110ffb0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x11100c188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10f8cb19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10f73f9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1112341bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x111237f5b - __rust_try\n      │   12:        0x111237ef5 - __rust_maybe_catch_panic\n      │   13:        0x111233fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ \n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;&#39;, PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000103c59bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000103c59b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x00000001024b8f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000103c3f3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000103e4e474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000103e67276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000103e4fab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000103e66ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000103e8dd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000102451f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001024c69fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x00000001024b7ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000103e69f5b - __rust_try\n      │ frame #13 - 0x0000000103e69ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001024b87e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000103e659d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ../src/libcore/result.rs:785\n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-mime-valid-bogus.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10a9f172b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10a9f7c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10a9f78aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10a7d03ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10a9df474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10a7be0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10a7cf188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10908e19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x108f029fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10a9f71bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10a9faf5b - __rust_try\n      │   12:        0x10a9faef5 - __rust_maybe_catch_panic\n      │   13:        0x10a9f6fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010f202bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010f202b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010da61f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010f1e83b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010f3f7474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010f410276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010f3f8ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010f40fecf - rust_begin_unwind\n      │ frame #8  - 0x000000010f436d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010d9faf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010da6f9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010da60ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010f412f5b - __rust_try\n      │ frame #13 - 0x000000010f412ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010da617e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010f40e9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorkerthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-newlines.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10cb1d72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10cb23c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10cb238aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10c8fc3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10cb0b474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10c8ea0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10c8fb188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10b1ba19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10b02e9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10cb231bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10cb26f5b - __rust_try\n      │   12:        0x10cb26ef5 - __rust_maybe_catc</span><span class=\"stdout\">h_panic\n      │   13:        0x10cb22fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000107960bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000107960b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x00000001061bff65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001079463b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000107b55474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000107b6e276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000107b56ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000107b6decf - rust_begin_unwind\n      │ frame #8  - 0x0000000107b94d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000106158f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001061cd9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x00000001061beea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000107b70f5b - __rust_try\n      │ frame #13 - 0x0000000107b70ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001061bf7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000107b6c9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;PaintWorkerPaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError&#39;, &#39;, called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39;, ../src/libcore/result.rs../src/libcore/result.rs:&#39; panicked at &#39;thread &#39;../src/libcore/result.rs:785785thread &#39;PaintWorker\n      │ &#39; panicked at &#39;stack backtrace:\n      │ :785\n      │ called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker\n      └ called `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, &#39;, &#39;, ../src/libcore/result.rs../src/libcore/result.rs::../src/libcore/result.rs\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-null-character.html\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10838672b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10838cc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10838c8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1081653ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x108374474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1081530c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x108164188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x106a2319f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1068979fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10838c1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10838ff5b - __rust_try\n      │   12:        0x10838fef5 - __rust_maybe_catch_panic\n      │   13:        0x10838bfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;PaintWorkerstack backtrace:\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010218fbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010218fb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x00000001009eef65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x00000001021753b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000102384474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010239d276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000102385ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010239cecf - rust_begin_unwind\n      │ frame #8  - 0x00000001023c3d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000100987f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001009fc9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x00000001009edea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010239ff5b - __rust_try\n      │ frame #13 - 0x000000010239fef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001009ee7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010239b9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;&#39;, PaintWorker../src/libcore/result.rs:\n      │ &#39;, 785../src/libcore/result.rs\n      │ :785ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ PaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;,\n      │ ../src/libcore/result.rs:785\n      └ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/format-utf-8.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10a6fb72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10a701c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10a7018aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10a4da3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10a6e9474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10a4c80c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10a4d9188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x108d9819f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x108c0c9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10a7011bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10a704f5b - __rust_try\n      │   12:        0x10a704ef5 - __rust_maybe_catch_panic\n      │   13:        0x10a700fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000110927bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000110927b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010f186f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000011090d3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000110b1c474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000110b35276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000110b1dab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000110b34ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000110b5bd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010f11ff5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010f1949fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010f185ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000110b37f5b - __rust_try\n      │ frame #13 - 0x0000000110b37ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010f1867e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000110b339d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;&#39;, thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorkerPaintWorkerthread &#39;&#39; panicked at &#39;PaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err</span><span class=\"stdout\">` value: RecvErrorstack backtrace:\n      │ thread &#39;PaintWorkercalled `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rscalled `Result::unwrap()` on an `Err` value: RecvError:&#39;, 785\n      │ &#39;, &#39; panicked at &#39;../src/libcore/result.rs:785../src/libcore/result.rs\n      │ :../src/libcore/result.rs785:\n      │ 785called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:\n      └ 785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/request-accept.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10a03772b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10a03dc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10a03d8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x109e163ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10a025474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x109e040c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x109e15188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x1086d419f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1085489fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10a03d1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10a040f5b - __rust_try\n      │   12:        0x10a040ef5 - __rust_maybe_catch_panic\n      │   13:        0x10a03cfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ 785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010a954bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010a954b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x00000001091b3f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010a93a3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010ab49474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010ab62276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010ab4aab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010ab61ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010ab88d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010914cf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001091c19fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x00000001091b2ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010ab64f5b - __rust_try\n      │ frame #13 - 0x000000010ab64ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001091b37e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010ab609d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/request-credentials.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10ed6072b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10ed66c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10ed668aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10eb3f3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10ed4e474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10eb2d0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10eb3e188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10d3fd19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10d2719fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10ed661bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10ed69f5b - __rust_try\n      │   12:        0x10ed69ef5 - __rust_maybe_catch_panic\n      │   13:        0x10ed65fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;\n      │ PaintWorker&#39; panicked at &#39;thread &#39;PaintWorker&#39; panicked at &#39;ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010cfaebae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010cfaeb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010b80df65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010cf943b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010d1a3474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010d1bc276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010d1a4ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010d1bbecf - rust_begin_unwind\n      │ frame #8  - 0x000000010d1e2d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010b7a6f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010b81b9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010b80cea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010d1bef5b - __rust_try\n      │ frame #13 - 0x000000010d1beef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010b80d7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010d1ba9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ../src/libcore/result.rs:785called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ../src/libcore/result.rs:stack backtrace:\n      │ 785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39;, ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!../src/libcore/result.rs:\n      │ 785\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;../src/libcore/result.rsPaintWorker:&#39; panicked at &#39;785called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ../src/libcore/result.rs:785\n      └ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/request-cache-control.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10a16f72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10a175c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10a1758aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x109f4e3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10a15d474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x109f3c0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x109f4d188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10880c19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1086809fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10a1751bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10a178f5b - __rust_try\n      │   12:        0x10a178ef5 - __rust_maybe_catch_panic\n      │   13:        0x10a174fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x00000001047f0bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x00000001047f0b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010304ff65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000</span><span class=\"stdout\">1047d63b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x00000001049e5474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x00000001049fe276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x00000001049e6ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x00000001049fdecf - rust_begin_unwind\n      │ frame #8  - 0x0000000104a24d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000102fe8f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010305d9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010304eea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000104a00f5b - __rust_try\n      │ frame #13 - 0x0000000104a00ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010304f7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001049fc9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785thread &#39;PaintWorkercalled `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;&#39;, called `Result::unwrap()` on an `Err` value: RecvError../src/libcore/result.rs&#39;, :../src/libcore/result.rs785:\n      │ 785\n      │ \n      └ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected OK] /eventsource/interfaces.html\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1031e272b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1031e8c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1031e88aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x102fc13ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1031d0474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x102faf0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x102fc0188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10187f19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1016f39fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1031e81bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1031ebf5b - __rust_try\n      │   12:        0x1031ebef5 - __rust_maybe_catch_panic\n      │   13:        0x1031e7fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010dff8bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010dff8b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010c857f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010dfde3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010e1ed474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010e206276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010e1eeab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010e205ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010e22cd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010c7f0f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010c8659fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010c856ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010e208f5b - __rust_try\n      │ frame #13 - 0x000000010e208ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010c8577e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010e2049d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ thread &#39;PaintWorker&#39; panicked at &#39;ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39;, &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ \n      │ thread &#39;PaintWorkercalled `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;&#39;, called `Result::unwrap()` on an `Err` value: RecvError../src/libcore/result.rs&#39;, :../src/libcore/result.rs785../src/libcore/result.rs\n      │ :785PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ../src/libcore/result.rs:785\n      └ :785\n    \n      ▶ CRASH [expected OK] /eventsource/shared-worker/eventsource-close.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1074a872b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1074aec9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1074ae8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1072873ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x107496474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1072750c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x107286188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x105b4519f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1059b99fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1074ae1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1074b1f5b - __rust_try\n      │   12:        0x1074b1ef5 - __rust_maybe_catch_panic\n      │   13:        0x1074adfe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000109dfabae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000109dfab31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000108659f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000109de03b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000109fef474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010a008276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000109ff0ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010a007ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010a02ed50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x00000001085f2f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001086679fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000108658ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010a00af5b - __rust_try\n      │ frame #13 - 0x000000010a00aef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x00000001086597e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010a0069d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      └ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected OK] /eventsource/shared-worker/eventsource-constructor-non-same-origin.htm\n      �</span><span class=\"stdout\">�� \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x105d4c72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x105d52c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x105d528aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x105b2b3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x105d3a474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x105b190c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x105b2a188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x1043e919f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10425d9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x105d521bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x105d55f5b - __rust_try\n      │   12:        0x105d55ef5 - __rust_maybe_catch_panic\n      │   13:        0x105d51fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker\n      │ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:thread &#39;PaintWorkerthread &#39;785&#39; panicked at &#39;\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000108587bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000108587b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x0000000106de6f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010856d3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010877c474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000108795276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010877dab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000108794ecf - rust_begin_unwind\n      │ frame #8  - 0x00000001087bbd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000106d7ff5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x0000000106df49fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x0000000106de5ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000108797f5b - __rust_try\n      │ frame #13 - 0x0000000108797ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x0000000106de67e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001087939d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ PaintWorkercalled `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;../src/libcore/result.rsPaintWorker:stack backtrace:\n      │ 785&#39; panicked at &#39;\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, &#39; panicked at &#39;\n      │ thread &#39;PaintWorker../src/libcore/result.rs&#39; panicked at &#39;:785called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs\n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!&#39;,\n      │ ../src/libcore/result.rs:785\n      └ :785\n    \n      ▶ CRASH [expected OK] /eventsource/shared-worker/eventsource-constructor-url-bogus.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10ddad72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10ddb3c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10ddb38aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10db8c3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10dd9b474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10db7a0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10db8b188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10c44a19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10c2be9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10ddb31bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10ddb6f5b - __rust_try\n      │   12:        0x10ddb6ef5 - __rust_maybe_catch_panic\n      │   13:        0x10ddb2fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000110b89bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000110b89b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010f3e8f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000110b6f3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000110d7e474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x0000000110d97276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000110d7fab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x0000000110d96ecf - rust_begin_unwind\n      │ frame #8  - 0x0000000110dbdd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010f381f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010f3f69fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010f3e7ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x0000000110d99f5b - __rust_try\n      │ frame #13 - 0x0000000110d99ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010f3e87e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x0000000110d959d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ ../src/libcore/result.rsthread &#39;PaintWorker:785&#39; panicked at &#39;thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;&#39;, PaintWorker../src/libcore/result.rs&#39; panicked at &#39;:called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError785&#39;, thread &#39;../src/libcore/result.rsPaintWorker&#39;,\n      │ ../src/libcore/result.rs:\n      │ 785:thread &#39;785\n      │ PaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError\n      │ &#39;, &#39;, ../src/libcore/result.rsstack backtrace:\n      │ :../src/libcore/result.rs:785\n      └ 785\n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/request-redirect.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10514572b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10514bc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10514b8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x104f243ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x105133474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x104f120c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x104f23188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x1037e219f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x1036569fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10514b1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10514ef5b - __rust_try\n      │   12:        0x10514eef5 - __rust_maybe_catch_panic\n      │   13:        0x10514afe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010c0c9bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010c0c9b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010a928f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010c0af3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010c2be474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010c2d7276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010c2bfab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010c2d6ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010c2fdd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010a8c1f5a - core::result::u</span><span class=\"stdout\">nwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010a9369fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010a927ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010c2d9f5b - __rust_try\n      │ frame #13 - 0x000000010c2d9ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010a9287e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010c2d59d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;PaintWorker../src/libcore/result.rsthread &#39;thread &#39;PaintWorkerthread &#39;PaintWorker&#39; panicked at &#39;PaintWorker:&#39; panicked at &#39;785called `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!&#39; panicked at &#39;&#39;,\n      │ &#39;, ../src/libcore/result.rs../src/libcore/result.rs::785785called `Result::unwrap()` on an `Err` value: RecvError\n      │ called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError&#39;, stack backtrace:\n      │ \n      │ &#39;, ../src/libcore/result.rs&#39;, ../src/libcore/result.rs../src/libcore/result.rs\n      │ ::785:785785\n      │ \n      └ \n    \n      ▶ CRASH [expected TIMEOUT] /eventsource/request-status-error.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10fa8372b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10fa89c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10fa898aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10f8623ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10fa71474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10f8500c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10f861188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10e12019f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10df949fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10fa891bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10fa8cf5b - __rust_try\n      │   12:        0x10fa8cef5 - __rust_maybe_catch_panic\n      │   13:        0x10fa88fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ stack backtrace:\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ thread &#39;ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010fa13bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010fa13b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010e272f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010f9f93b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010fc08474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010fc21276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010fc09ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010fc20ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010fc47d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010e20bf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010e2809fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010e271ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010fc23f5b - __rust_try\n      │ frame #13 - 0x000000010fc23ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010e2727e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010fc1f9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n      │ \n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    \n      ▶ CRASH [expected OK] /eventsource/shared-worker/eventsource-onmesage.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10d2e572b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x10d2ebc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x10d2eb8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10d0c43ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10d2d3474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x10d0b20c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10d0c3188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10b98219f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10b7f69fe - servo::main::h6924e5658370f6b5\n      │   10:        0x10d2eb1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x10d2eef5b - __rust_try\n      │   12:        0x10d2eeef5 - __rust_maybe_catch_panic\n      │   13:        0x10d2eafe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ thread &#39;PaintWorkerERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010d860bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010d860b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010c0bff65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010d8463b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010da55474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010da6e276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010da56ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010da6decf - rust_begin_unwind\n      │ frame #8  - 0x000000010da94d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010c058f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010c0cd9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010c0beea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010da70f5b - __rust_try\n      │ frame #13 - 0x000000010da70ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010c0bf7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010da6c9d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ PaintWorker&#39; panicked at &#39;thread &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39; panicked at &#39;&#39; panicked at &#39;thread &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39;, thread &#39;../src/libcore/result.rs:PaintWorkercalled `Result::unwrap()` on an `Err` value: RecvErrorERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!&#39; panicked at &#39;&#39;, called `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;&#39;, called `Result::unwrap()` on an `Err` value: RecvError../src/libcore/result.rs&#39;, :&#39;, 785\n      │ 785../src/libcore/result.rs\n      │ \n      │ :785../src/libcore/result.rs\n      │ :stack backtrace:\n      │ thread &#39;PaintWorker../src/libcore/result.rs:785785\n      │ \n      └ &#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected OK] /eventsource/shared-worker/eventsource-eventtarget.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1026dd72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1026e3c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1026e38aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1024bc3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$:</span><span class=\"stdout\">:ha2bd86c312dc8d7a\n      │    5:        0x1026cb474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1024aa0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1024bb188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x100d7a19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x100bee9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1026e31bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1026e6f5b - __rust_try\n      │   12:        0x1026e6ef5 - __rust_maybe_catch_panic\n      │   13:        0x1026e2fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;PaintWorker\n      │ &#39;, thread &#39;PaintWorker&#39; panicked at &#39;thread &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39;, &#39; panicked at &#39;../src/libcore/result.rscalled `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;&#39;, thread &#39;&#39; panicked at &#39;:PaintWorker785../src/libcore/result.rs../src/libcore/result.rs::ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010de9bbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010de9bb31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010c6faf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010de813b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010e090474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010e0a9276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010e091ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010e0a8ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010e0cfd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010c693f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010c7089fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010c6f9ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010e0abf5b - __rust_try\n      │ frame #13 - 0x000000010e0abef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010c6fa7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010e0a79d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rsPaintWorker:&#39; panicked at &#39;\n      │ \n      │ stack backtrace:\n      │ 785&#39; panicked at &#39;\n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ 785\n      │ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:called `Result::unwrap()` on an `Err` value: RecvError&#39;, 785../src/libcore/result.rs:785\n      │ \n      └ 785\n    \n      ▶ CRASH [expected OK] /eventsource/shared-worker/eventsource-onopen.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1105e972b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1105efc9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1105ef8aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1103c83ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1105d7474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1103b60c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1103c7188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x10ec8619f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x10eafa9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1105ef1bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1105f2f5b - __rust_try\n      │   12:        0x1105f2ef5 - __rust_maybe_catch_panic\n      │   13:        0x1105eefe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ thread &#39;thread &#39;PaintWorkerPaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;PaintWorker&#39; panicked at &#39;&#39;, &#39;, called `Result::unwrap()` on an `Err` value: RecvError../src/libcore/result.rs../src/libcore/result.rs:&#39;, 785../src/libcore/result.rs:thread &#39;thread &#39;ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError785:PaintWorker785PaintWorker\n      │ &#39; panicked at &#39;\n      │ \n      │ \n      │ stack backtrace:\n      │ thread &#39;called `Result::unwrap()` on an `Err` value: RecvError&#39; panicked at &#39;&#39;, called `Result::unwrap()` on an `Err` value: RecvErrorERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010bce4bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010bce4b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010a543f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010bcca3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010bed9474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010bef2276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x000000010bedaab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010bef1ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010bf18d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010a4dcf5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010a5519fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010a542ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010bef4f5b - __rust_try\n      │ frame #13 - 0x000000010bef4ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010a5437e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010bef09d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ &#39;,\n      │ ../src/libcore/result.rs:785\n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ ../src/libcore/result.rs:PaintWorker&#39; panicked at &#39;785\n      └ called `Result::unwrap()` on an `Err` value: RecvError&#39;, ../src/libcore/result.rs:785\n    \n      ▶ CRASH [expected OK] /eventsource/shared-worker/eventsource-url.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x1065ed72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x1065f3c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1065f38aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x1063cc3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x1065db474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1063ba0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x1063cb188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x104c8a19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x104afe9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1065f31bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x1065f6f5b - __rust_try\n      │   12:        0x1065f6ef5 - __rust_maybe_catch_panic\n      │   13:        0x1065f2fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvError\n      │ ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x0000000103e3dbae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x0000000103e3db31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010269cf65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x0000000103e233b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x0000000104032474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010404b276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - 0x0000000104033ab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010404aecf - rust_begin_unwind\n      │ frame #8  - 0x0000000104071d50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x0000000102635f5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x00000001026aa9fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010269bea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010404df5b - __rust_try\n      │ frame #13 - 0x000000010404def5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010269c7e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x00000001040499d8 - std::</span><span class=\"stdout\">sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ \n      │ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n      │ thread &#39;thread &#39;PaintWorkerPaintWorkerthread &#39;&#39; panicked at &#39;thread &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39;, &#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorPaintWorker&#39; panicked at &#39;../src/libcore/result.rs:785thread &#39;PaintWorkercalled `Result::unwrap()` on an `Err` value: RecvErrorcalled `Result::unwrap()` on an `Err` value: RecvError&#39;, &#39;, thread &#39;\n      │ PaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvError../src/libcore/result.rs../src/libcore/result.rsstack backtrace:\n      │ :called `Result::unwrap()` on an `Err` value: RecvError785&#39;, &#39;, ../src/libcore/result.rs&#39;, :../src/libcore/result.rs\n      │ ::../src/libcore/result.rs:785785785785\n      │ \n      │ \n      └ \n    \n      ▶ CRASH [expected OK] /eventsource/shared-worker/eventsource-prototype.htm\n      │ \n      │ thread &#39;main&#39; panicked at &#39;assertion failed: DEFAULT_OPTIONS.is_null()&#39;, /Users/servo/buildbot/slave/mac-rel-wpt/build/components/util/opts.rs:867\n      │ stack backtrace:\n      │    1:        0x10482e72b - std::sys::backtrace::tracing::imp::write::h6528da8103c51ab9\n      │    2:        0x104834c9a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hbe741a5cc3c49508\n      │    3:        0x1048348aa - std::panicking::default_hook::he0146e6a74621cb4\n      │    4:        0x10460d3ff - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │    5:        0x10481c474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │    6:        0x1045fb0c4 - std::panicking::begin_panic::h0bf39f6d43ab9349\n      │    7:        0x10460c188 - util::opts::set_defaults::h07daffc7a99198d8\n      │    8:        0x102ecb19f - servo::run_content_process::h0ad4005b0936047f\n      │    9:        0x102d3f9fe - servo::main::h6924e5658370f6b5\n      │   10:        0x1048341bd - std::panicking::try::call::h852b0d5f2eec25e4\n      │   11:        0x104837f5b - __rust_try\n      │   12:        0x104837ef5 - __rust_maybe_catch_panic\n      │   13:        0x104833fe1 - std::rt::lang_start::hfe4efe1fc39e4a30\n      │ ERROR:constellation::constellation: Panic: called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;thread &#39;PaintWorkerPaintWorker&#39; panicked at &#39;&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;&#39;, called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;&#39;, PaintWorker../src/libcore/result.rs:785thread &#39;\n      │ PaintWorker&#39; panicked at &#39;called `Result::unwrap()` on an `Err` value: RecvErrorthread &#39;PaintWorker&#39; panicked at &#39;\n      │ called `Result::unwrap()` on an `Err` value: RecvError../src/libcore/result.rs&#39;, PaintWorker&#39;, &#39; panicked at &#39;stack backtrace:\n      │ ../src/libcore/result.rs../src/libcore/result.rs&#39; panicked at &#39;ERROR:constellation::constellation: Backtrace:\n      │ frame #0  - 0x000000010cf47bae - backtrace::backtrace::trace::hccde8df28b4db2a2\n      │ frame #1  - 0x000000010cf47b31 - backtrace::capture::Backtrace::new::h42f95930bb8c5ee8\n      │ frame #2  - 0x000000010b7a6f65 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::h0a1ee8cbcba78190\n      │ frame #3  - 0x000000010cf2d3b7 - util::panicking::initiate_panic_hook::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::ha2bd86c312dc8d7a\n      │ frame #4  - 0x000000010d13c474 - std::panicking::rust_panic_with_hook::h983af77c1a2e581b\n      │ frame #5  - 0x000000010d155276 - std::panicking::begin_panic::he426e15a3766089a\n      │ frame #6  - </span><span class=\"stdout\">0x000000010d13dab8 - std::panicking::begin_panic_fmt::hdddb415186c241e7\n      │ frame #7  - 0x000000010d154ecf - rust_begin_unwind\n      │ frame #8  - 0x000000010d17bd50 - core::panicking::panic_fmt::hf4e16cb7f0d41a25\n      │ frame #9  - 0x000000010b73ff5a - core::result::unwrap_failed::h36b4b47aa6131a86\n      │ frame #10 - 0x000000010b7b49fe - _&lt;gfx..paint_thread..PaintThread&lt;C&gt;&gt;::start::h4fb1a830211f0848\n      │ frame #11 - 0x000000010b7a5ea0 - std::panicking::try::call::h4222ff02722ad38c\n      │ frame #12 - 0x000000010d157f5b - __rust_try\n      │ frame #13 - 0x000000010d157ef5 - __rust_maybe_catch_panic\n      │ frame #14 - 0x000000010b7a67e4 - _&lt;F as alloc..boxed..FnBox&lt;A&gt;&gt;::call_box::hc805266888c15ca4\n      │ frame #15 - 0x000000010d1539d8 - std::sys::thread::Thread::new::thread_start::h9c883b6d445ece46\n      │ frame #16 - 0x00007:785called `Result::unwrap()` on an `Err` value: RecvError:fff9534f059 - _pthread_body\n      │ frame #17 - 0x00007fff9534efd6 - _pthread_start\n      │ 785\n      │ &#39;, :\n      │ called `Result::unwrap()` on an `Err` value: RecvError785&#39;,\n      │ ../src/libcore/result.rs:785\n      │ \n      │ ../src/libcore/result.rs:785\n      └ ERROR:constellation::constellation: Pipeline failed in hard-fail mode.  Crashing!\n    "}}
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