Add new lint "missing_panics_doc"

[brightly-salty]

fixes #1974
changelog: Added the "missing_panics_doc" lint which lints when public functions that may panic are missing "# Panics" in their doc comment

[rust-highfive]

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[flip1995]

Welcome to Clippy! ❤️

This looks really good to me!

[flip1995]

There is still a dogfood error. Otherwise LGTM

[brightly-salty]

@flip1995 I fixed it, but now there's a merge conflict that I don't have the capability to resolve. Looks like it's just a changed function signature.

[flip1995]

I rebased it and added the first panic location in the lint output.

With this, I now understand why the proc_macro is linted. This is a FP, I'd like to see fixed, before merging this.

[brightly-salty]

I rebased it and added the first panic location in the lint output.

With this, I now understand why the proc_macro is linted. This is a FP, I'd like to see fixed, before merging this.

I don't think I understand. Your changes look good to me, just need to remove an unused import and add the span changes in another part of the codebase.

[flip1995]

@bors r+

Thanks!

[bors]

📌 Commit bde667a has been approved by flip1995

[bors]

⌛ Testing commit bde667a with merge 28794e9...

[bors]

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: flip1995
Pushing 28794e9 to master...