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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 `i32`, found `()`
| |
| required by a bound introduced by this call
|
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`.
|
