Rollup of 8 pull requests

[JohnTitor]

Successful merges:

• Add a regression test for issue-63355 #86763 (Add a regression test for issue-63355)
• Recover from a misplaced inner doc comment #86814 (Recover from a misplaced inner doc comment)
• Check that const parameters of trait methods have compatible types #86843 (Check that const parameters of trait methods have compatible types)
• rustdoc: Cleanup ExternalCrate #86889 (rustdoc: Cleanup ExternalCrate)
• Remove nondeterminism in multiple-definitions test #87092 (Remove nondeterminism in multiple-definitions test)
• Add diagnostic items for Clippy #87170 (Add diagnostic items for Clippy)
• fix typo in compile_fail doctest #87183 (fix typo in compile_fail doctest)
• rustc_middle: remove redundant clone #87205 (rustc_middle: remove redundant clone)

Failed merges:

r? @ghost
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