1 error[E0308]: mismatched types
2 --> $DIR/dont-suggest-missing-await.rs:14:18
4 LL | async fn make_u32() -> u32 {
5 | --- the `Output` of this `async fn`'s found opaque type
8 | ^ expected `u32`, found opaque type
10 = note: expected type `u32`
11 found opaque type `impl Future`
13 error: aborting due to previous error
15 For more information about this error, try `rustc --explain E0308`.