Clippy's CLI usage error screen shows cargo check

[camelid]

Clippy's CLI usage error screen shows cargo check instead of cargo clippy:

error: Found argument 'src/librustc_driver/lib.rs' which wasn't expected, or isn't valid in this context

USAGE:
    cargo check [OPTIONS]

For more information try --help

I would expect it to say:

error: Found argument 'src/librustc_driver/lib.rs' which wasn't expected, or isn't valid in this context

USAGE:
    cargo clippy [OPTIONS]

For more information try --help

---

Output of cargo clippy -V:

clippy 0.0.212 (204bb9b5 2020-03-17)

[phansch]

Thanks for the report! What command were you running that caused this error?

[camelid]

cargo clippy src/librustc_driver/lib.rs

I was testing to see if I could run clippy on a single file. Is there a way to do that so that it filters out all warnings etc. from other files?

[matthiaskrgr]

cargo clippy executes cargo in a crate (similar to cargo check).
I think you want clippy-driver path/to/file.rs.

EDIT: you can allow/deny warnings like so: clippy-driver file.rs -Wclippy::lintname -Dclippy:otherlintname

[camelid]

Sorry, perhaps I wasn't clear enough! I meant that I wanted it to work like cargo clippy so that it imports other items in my crate, but instead only shows the errors that stem from a particular file so that I can clearly see just the issues in that file.

If I run clippy-driver path/to/file.rs, then it gives me errors since it doesn't know about the rest of my code.

[matthiaskrgr]

I don't know of an way to only show warnings of a single file while importing everything, except for allowing warnings in all other files via https://github.com/rust-lang/rust-clippy#allowingdenying-lints :/

[camelid]

Huh. Seems like a useful feature!