Test test::verify_check_works failing on windows

[t-botz]

This windows bug happens no matter the git autocrlf configuration.
Here is the result:

---- test::verify_check_works stdout ----
thread 'test::verify_check_works' panicked at 'Assertion failed for `{XXX}\rustfmt\target\debug\rustfmt --check .\temp_check.rs`
with: Unexpected return status: failure
stdout=``````
stderr=```Unrecognized option: 'check'
```', {XXX}\.cargo\registry\src\github.com-1ecc6299db9ec823\assert_cli-0.6.1\src\assert.rs:441:13
note: Run with `RUST_BACKTRACE=1` for a backtrace.

Where {XXX} is my home folder.

After a git bisect, the responsible commit is 5d9f5aa

[t-botz]

My bad! Nothing to do with windows...
It actually fails only if you don't run cargo build first...

Not sure if you are ok with that. If yes then feel free to close this issue.

[t-botz]

@nrc TLDR; verify_check_works depends on the output of cargo build, are we ok with that?
@topecongiro Since you have added the bug label, does that mean we should avoid doing that? I can do a PR.

[alexheretic]

I ran into this too while testing #2745, I added an assert that will fail a cargo clean; cargo test run with the message "no rustfmt bin, try running cargo build before testing".