Auto merge of #147745 - matthiaskrgr:rollup-b4kftk9, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - rust-lang/rust#143191 (Stabilize `rwlock_downgrade` library feature)
 - rust-lang/rust#147444 (Allow printing a fully-qualified path in `def_path_str`)
 - rust-lang/rust#147527 (Update t-compiler beta nomination Zulip msg)
 - rust-lang/rust#147670 (some `ErrorGuaranteed` cleanups)
 - rust-lang/rust#147676 (Return spans out of `is_doc_comment` to reduce reliance on `.span()` on attributes)
 - rust-lang/rust#147708 (const `mem::drop`)
 - rust-lang/rust#147710 (Fix ICE when using contracts on async functions)
 - rust-lang/rust#147716 (Fix some comments)
 - rust-lang/rust#147718 (miri: use allocator_shim_contents codegen helper)
 - rust-lang/rust#147729 (ignore boring locals when explaining why a borrow contains a point due to drop of a live local under polonius)
 - rust-lang/rust#147742 (Revert unintentional whitespace changes to rustfmt-excluded file)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

clippy_lints/src/four_forward_slashes.rs

@@ -47,7 +47,7 @@ impl<'tcx> LateLintPass<'tcx> for FourForwardSlashes {
             .tcx
             .hir_attrs(item.hir_id())
             .iter()
-            .filter(|i| i.is_doc_comment())
+            .filter(|i| i.is_doc_comment().is_some())
             .fold(item.span.shrink_to_lo(), |span, attr| span.to(attr.span()));
         let (Some(file), _, _, end_line, _) = sm.span_to_location_info(span) else {
             return;

clippy_lints/src/undocumented_unsafe_blocks.rs

@@ -475,7 +475,7 @@ fn block_has_safety_comment(cx: &LateContext<'_>, span: Span) -> bool {
 
 fn include_attrs_in_span(cx: &LateContext<'_>, hir_id: HirId, span: Span) -> Span {
     span.to(cx.tcx.hir_attrs(hir_id).iter().fold(span, |acc, attr| {
-        if attr.is_doc_comment() {
+        if attr.is_doc_comment().is_some() {
             return acc;
         }
         acc.to(attr.span())