| error[E0271]: expected `{async block@$DIR/async.rs:12:17: 12:22}` to be a future that resolves to `i32`, but it resolves to `()` |
| --> $DIR/async.rs:12:17 |
| | |
| LL | needs_async(async {}); |
| | ----------- ^^^^^^^^ expected `()`, found `i32` |
| | | |
| | required by a bound introduced by this call |
| | |
| = note: expected unit type `()` |
| found type `i32` |
| note: required by a bound in `needs_async` |
| --> $DIR/async.rs:8:31 |
| | |
| LL | fn needs_async(_: impl Future<Output = i32>) {} |
| | ^^^^^^^^^^^^ required by this bound in `needs_async` |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0271`. |