error[E0271]: type mismatch resolving `() == impl !Fn<(u32,)>` | |
--> $DIR/opaque-type-unsatisfied-fn-bound.rs:5:17 | |
| | |
LL | fn produce() -> impl !Fn<(u32,)> {} | |
| ^^^^^^^^^^^^^^^^ types differ | |
error: aborting due to 1 previous error | |
For more information about this error, try `rustc --explain E0271`. |