error[E0728]: `await` is only allowed inside `async` functions and blocks --> $DIR/issue-62009-1.rs:6:23 | LL | fn main() { | ---- this is not `async` LL | async { let (); }.await; | ^^^^^ only allowed inside `async` functions and blocks error[E0728]: `await` is only allowed inside `async` functions and blocks --> $DIR/issue-62009-1.rs:10:7 | LL | fn main() { | ---- this is not `async` ... LL | }.await; | ^^^^^ only allowed inside `async` functions and blocks error[E0728]: `await` is only allowed inside `async` functions and blocks --> $DIR/issue-62009-1.rs:12:16 | LL | fn main() { | ---- this is not `async` ... LL | (|_| 2333).await; | ^^^^^ only allowed inside `async` functions and blocks error[E0277]: `{closure@$DIR/issue-62009-1.rs:12:6: 12:9}` is not a future --> $DIR/issue-62009-1.rs:12:16 | LL | (|_| 2333).await; | -^^^^^ | || | |`{closure@$DIR/issue-62009-1.rs:12:6: 12:9}` is not a future | help: remove the `.await` | = help: the trait `Future` is not implemented for closure `{closure@$DIR/issue-62009-1.rs:12:6: 12:9}` = note: {closure@$DIR/issue-62009-1.rs:12:6: 12:9} must be a future or must implement `IntoFuture` to be awaited = note: required for `{closure@$DIR/issue-62009-1.rs:12:6: 12:9}` to implement `IntoFuture` error: aborting due to 4 previous errors Some errors have detailed explanations: E0277, E0728. For more information about an error, try `rustc --explain E0277`.