// edition:2018 fn take_u32(_x: u32) {} async fn make_u32() -> u32 { 22 } #[allow(unused)] async fn suggest_await_in_async_fn() { let x = make_u32(); take_u32(x) //~^ ERROR mismatched types [E0308] //~| HELP consider `await`ing on the `Future` //~| SUGGESTION .await } async fn dummy() {} #[allow(unused)] async fn suggest_await_in_async_fn_return() { dummy() //~^ ERROR mismatched types [E0308] //~| HELP consider `await`ing on the `Future` //~| HELP consider using a semicolon here //~| SUGGESTION .await } #[allow(unused)] async fn suggest_await_on_if() { let _x = if true { dummy() //~^ HELP consider `await`ing on the `Future` } else { dummy().await //~^ ERROR `if` and `else` have incompatible types [E0308] }; } #[allow(unused)] async fn suggest_await_on_previous_match_arms() { let _x = match 0usize { 0 => dummy(), //~ HELP consider `await`ing on the `Future` 1 => dummy(), 2 => dummy().await, //~^ `match` arms have incompatible types [E0308] }; } #[allow(unused)] async fn suggest_await_on_match_expr() { let _x = match dummy() { //~ HELP consider `await`ing on the `Future` () => {} //~ ERROR mismatched types [E0308] }; } async fn dummy_result() -> Result<(), ()> { Ok(()) } #[allow(unused)] async fn suggest_await_in_generic_pattern() { match dummy_result() { //~^ HELP consider `await`ing on the `Future` //~| HELP consider `await`ing on the `Future` //~| SUGGESTION .await Ok(_) => {} //~^ ERROR mismatched types [E0308] Err(_) => {} //~^ ERROR mismatched types [E0308] } } fn main() {}