error[E0728]: `await` is only allowed inside `async` functions and blocks --> $DIR/non-async-enclosing-span.rs:9:28 | LL | fn main() { | --------- this is not `async` LL | let x = move || {}; LL | let y = do_the_thing().await; | ^^^^^ only allowed inside `async` functions and blocks error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0728`.