{"action":"opened","issue":{"url":"https://api.github.com/repos/rust-lang/rust/issues/55479","repository_url":"https://api.github.com/repos/rust-lang/rust","labels_url":"https://api.github.com/repos/rust-lang/rust/issues/55479/labels{/name}","comments_url":"https://api.github.com/repos/rust-lang/rust/issues/55479/comments","events_url":"https://api.github.com/repos/rust-lang/rust/issues/55479/events","html_url":"https://github.com/rust-lang/rust/issues/55479","id":375091182,"node_id":"MDU6SXNzdWUzNzUwOTExODI=","number":55479,"title":"rustdoc: blanket impls not showing traits with sufficient indirection?","user":{"login":"QuietMisdreavus","id":5217170,"node_id":"MDQ6VXNlcjUyMTcxNzA=","avatar_url":"https://avatars2.githubusercontent.com/u/5217170?v=4","gravatar_id":"","url":"https://api.github.com/users/QuietMisdreavus","html_url":"https://github.com/QuietMisdreavus","followers_url":"https://api.github.com/users/QuietMisdreavus/followers","following_url":"https://api.github.com/users/QuietMisdreavus/following{/other_user}","gists_url":"https://api.github.com/users/QuietMisdreavus/gists{/gist_id}","starred_url":"https://api.github.com/users/QuietMisdreavus/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/QuietMisdreavus/subscriptions","organizations_url":"https://api.github.com/users/QuietMisdreavus/orgs","repos_url":"https://api.github.com/users/QuietMisdreavus/repos","events_url":"https://api.github.com/users/QuietMisdreavus/events{/privacy}","received_events_url":"https://api.github.com/users/QuietMisdreavus/received_events","type":"User","site_admin":false},"labels":[{"id":203738,"node_id":"MDU6TGFiZWwyMDM3Mzg=","url":"https://api.github.com/repos/rust-lang/rust/labels/T-rustdoc","name":"T-rustdoc","color":"bfd4f2","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-10-29T16:02:35Z","updated_at":"2018-10-29T16:02:35Z","closed_at":null,"author_association":"MEMBER","body":"In the gtk-rs docs, [the page for `Clipboard`](http://gtk-rs.org/docs/gtk/struct.Clipboard.html) doesn't show either the [`ClipboardExt`](http://gtk-rs.org/docs/gtk/trait.ClipboardExt.html) or [`ClipboardExtManual`](http://gtk-rs.org/docs/gtk/prelude/trait.ClipboardExtManual.html) traits, despite both of those traits being available on `Clipboard`.\r\n\r\nI *think* this has something to do with the way those traits are implemented. Both extension traits are implemented on `T: IsA<Clipboard>`, where `IsA<T>` is generically implemented for all `<T>`. The `IsA<T>` impl shows up on the `Clipboard` page, but the extension traits do not. Is there a maximum amount of indirection that the trait checker we're using can do? These traits are both usable from regular code.\r\n\r\ncc @GuillaumeGomez "}}
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