Bring up Rust lang #37612 as a known problem for let_and_return Fixes https://github.com/rust-lang/rust-clippy/issues/4182. I don't think conforming to this lint could trigger the issue immediately, only if subsequent code-changes go wrong, but I may be mistaken. Since the lint can't trigger it by itself, just closing this issue might be reasonable, if not maybe this PR fixes it. changelog: Update docs for `let_and_return`, mention rust-lang #37612