| error[E0271]: type mismatch resolving `{async closure body@$DIR/is-not-fn.rs:8:23: 8:25} == ()` | |
| --> $DIR/is-not-fn.rs:8:14 | |
| | | |
| LL | needs_fn(async || {}); | |
| | -------- ^^^^^^^^^^^ types differ | |
| | | | |
| | required by a bound introduced by this call | |
| | | |
| note: required by a bound in `needs_fn` | |
| --> $DIR/is-not-fn.rs:7:25 | |
| | | |
| LL | fn needs_fn(x: impl FnOnce()) {} | |
| | ^^^^^^^^ required by this bound in `needs_fn` | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0271`. |