error: `Umm` held across a suspend point, but should not be --> $DIR/ref.rs:22:26 | LL | let guard = &mut self.u; | ^^^^^^ LL | LL | other().await; | ------ the value is held across this suspend point | note: You gotta use Umm's, ya know? --> $DIR/ref.rs:22:26 | LL | let guard = &mut self.u; | ^^^^^^ help: consider using a block (`{ ... }`) to shrink the value's scope, ending before the suspend point --> $DIR/ref.rs:22:26 | LL | let guard = &mut self.u; | ^^^^^^ note: the lint level is defined here --> $DIR/ref.rs:7:9 | LL | #![deny(must_not_suspend)] | ^^^^^^^^^^^^^^^^ error: aborting due to previous error