… these lists

When a suggestion part is for already present code, do not highlight it. If after that there are no highlights left, do not show the suggestion at all.

Fix clippy lint suggestion incorrectly treated as `span_help`.

…wiser

Better handle suggestions for the already present code and fix some suggestions

When a suggestion part is for code that is already present, skip it. If all the suggestion parts for a suggestion are for code that is already there, do not emit the suggestion.

Fix two suggestions that treat `span_suggestion` as if it were `span_help`.

…lubby789

Update sysinfo version to 0.31.2

I needed to update `memchr` version (which was pinned in rust-lang@36a1679). So let's see if it triggers the linker issue.

try-job: x86_64-mingw

raw_eq: using it on bytes with provenance is not UB (outside const-eval)

The current behavior of raw_eq violates provenance monotonicity. See rust-lang#124921 for an explanation of provenance monotonicity. It is violated in raw_eq because comparing bytes without provenance is well-defined, but adding provenance makes the operation UB.

So remove the no-provenance requirement from raw_eq. However, the requirement stays in-place for compile-time invocations of raw_eq, that indeed cannot deal with provenance.

Cc `@rust-lang/opsem`

…gjubilee

[`macro_metavar_expr_concat`] Dogfooding

cc rust-lang#124225

Starts inner usage to test the robustness of the implementation.

…r-errors

MIR required_consts, mentioned_items: ensure we do not forget to fill these lists

Bodies initially get created with empty required_consts and mentioned_items, but at some point those should be filled. Make sure we notice when that is forgotten.

…melid

rustdoc: Remove dead opaque_tys rendering logic

rust-lang#127276 removed OpaqueTy from clean, and the code populating AllTypes::opaque_tys, but not this field itself.