Add #[must_use] to Rc::downgrade Missed this in previous PR https://github.com/rust-lang/rust/pull/89796#issuecomment-941456006 Parent issue: #89692 r? ```@joshtriplett```
Add #[must_use] to Rc::downgrade Missed this in previous PR https://github.com/rust-lang/rust/pull/89796#issuecomment-941456006 Parent issue: #89692 r? ```@joshtriplett```