title: Rust tests fail to even run
body: <p>I'm writing a project to learn how to use Rust and I'm calling my project <a href="https://github.com/jinhale/future-finance-labs/tree/master" rel="nofollow noreferrer">future-finance-labs</a>. After writing some basic functions and verifying the app can be built I wanted to include some tests, located in <code>aggregates/mod.rs</code>. [The tests are in the same file as the actual code as per the documentation.] I'm unable to get the tests to run despite following the <a href="https://doc.rust-lang.org/book/ch11-00-testing.html" rel="nofollow noreferrer">documentation</a> to the best of my ability. I have tried to build the project using PowerShell as well as Bash. [It fails to run on Fedora Linux as well]</p>
  <p>Here is my output on Bash:</p>
  <pre><code>~/future-finance-labs$ cargo test -- src/formatters/mod.rs
      Finished test [unoptimized + debuginfo] target(s) in 5.98s
       Running target/debug/deps/future_finance_labs-16ed066e1ea3b9a1
  
  running 0 tests
  
  test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
  </code></pre>
  <p>Using PowerShell I get the same output with some errors like the following:</p>
  <pre><code>error: failed to remove C:\Users\jhale\AppData\Local\Packages\CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc\LocalState\rootfs\home\jhale\future-finance-labs\target\debug\build\mime_guess-890328c8763afc22\build_script_build-890328c8763afc22.build_script_build.c22di3i8-cgu.0.rcgu.o: The system cannot find the path specified. (os error 3)
  </code></pre>
  <p>After my initial excitement at the prospect of writing a few tests that passed on the first attempt, I quickly realized all the green was indicative; rather, of a failure to even run the tests. I just want to run the unit tests. Running <code>cargo test</code> alone without a separate and file fails as well. Why can't I run any test in this project with my current setup?</p>