Suggest similar feature names on CLI

[DJMcNab]

What does this PR try to resolve?

When you typo a feature name on the CLI, the error message isn't very helpful. Concretely, I was testing a PR which adds a feature called cosmic_text to enable a cosmic-text dependency, and got a correct but unhelpful error message:

error: Package `scenes v0.0.0 ([ELIDED]/linebender/vello/examples/scenes)` does not have feature `cosmic-text`. It has an optional dependency with that name, but that dependency uses the "dep:" syntax in the features table, so it does not have an implicit feature with that name.

I had to dig into the Cargo.lock file to find out how to fix this.

How should we test and review this PR?

The existing tests seem to cover this quite well. I don't think that this feature warrants adding its own test.

[rustbot]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @weihanglo (or someone else) some time within the next two weeks.

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[DJMcNab]

@rustbot label A-diagnostics -A-dependency-resolution

[epage]

Thanks for adding this!

[DJMcNab]

Does rustbot know something I don't? If it insists on that label, I'm not going to fight it.

[arlosi]

Does rustbot know something I don't? If it insists on that label, I'm not going to fight it.

It's because you're editing files within the resolver. Don't worry about it.

[epage]

Can you restructure your PR

• A commit that extends the tests to cover more cases (should pass)
• A commit for behavior changes (tests should be updated to pass)