| error[E0277]: the trait bound `S: std::ops::Fn<(isize,)>` is not satisfied |
| --> $DIR/unboxed-closures-fnmut-as-fn.rs:38:13 |
| | |
| LL | let x = call_it(&S, 22); |
| | ^^^^^^^ the trait `std::ops::Fn<(isize,)>` is not implemented for `S` |
| | |
| note: required by `call_it` |
| --> $DIR/unboxed-closures-fnmut-as-fn.rs:33:1 |
| | |
| LL | fn call_it<F:Fn(isize)->isize>(f: &F, x: isize) -> isize { |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
