| error[E0631]: type mismatch in function arguments |
| --> $DIR/fn-variance-1.rs:11:5 |
| | |
| LL | fn takes_mut(x: &mut isize) { } |
| | --------------------------- found signature of `for<'r> fn(&'r mut isize) -> _` |
| LL | |
| LL | fn apply<T, F>(t: T, f: F) where F: FnOnce(T) { |
| | --------------------------------------------- required by `apply` |
| ... |
| LL | apply(&3, takes_mut); |
| | ^^^^^ expected signature of `fn(&{integer}) -> _` |
| |
| error[E0631]: type mismatch in function arguments |
| --> $DIR/fn-variance-1.rs:15:5 |
| | |
| LL | fn takes_imm(x: &isize) { } |
| | ----------------------- found signature of `for<'r> fn(&'r isize) -> _` |
| ... |
| LL | fn apply<T, F>(t: T, f: F) where F: FnOnce(T) { |
| | --------------------------------------------- required by `apply` |
| ... |
| LL | apply(&mut 3, takes_imm); |
| | ^^^^^ expected signature of `fn(&mut {integer}) -> _` |
| |
| error: aborting due to 2 previous errors |
| |