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