--color=always removes the benefits of this action

[EdJoPaTo]

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Description

This action runs cargo with arguments. When cargo finds problems they are annotated in a way GitHub can display them at the exact file / line.

When --color=always is added this doesn't work anymore.

You can reproduce this by creating some issue which cargo highlights. This works properly. When --color=always is added the output reduces to "[…] failed with exit code 101".

Workflow code

      - name: Check clippy
        uses: actions-rs/cargo@v1
        with:
          command: clippy
-          args: --verbose --locked --all-targets ${{ matrix.features }} -- ${{ matrix.clippyargs }}
+          args: --verbose --locked --all-targets ${{ matrix.features }} --color=always -- ${{ matrix.clippyargs }}

Action output

works

https://github.com/EdJoPaTo/rust-binary-metafile-template/actions/runs/1399909575

works.zip

doesn't work

https://github.com/EdJoPaTo/rust-binary-metafile-template/actions/runs/1399969307

doesnt-work.zip

Expected behavior

Described above

Additional context

--color=always is probably not working because of additional escape codes in the output.

Personal opinion: I do not think its interesting to support color output. I think outputting a warning when --color is specified is helpful to prevent people from running into this issue.