| error[E0631]: type mismatch in function arguments |
| --> $DIR/issue-118510.rs:8:9 |
| | |
| LL | Ident(&'a mut S), |
| | ----- found signature defined here |
| ... |
| LL | map(Sexpr::Ident); |
| | --- ^^^^^^^^^^^^ expected due to this |
| | | |
| | required by a bound introduced by this call |
| | |
| = note: expected function signature `for<'a> fn(&'a _) -> _` |
| found function signature `fn(&mut _) -> _` |
| note: required by a bound in `map` |
| --> $DIR/issue-118510.rs:5:19 |
| | |
| LL | fn map<Foo, T, F: FnOnce(&Foo) -> T>(f: F) {} |
| | ^^^^^^^^^^^^^^^^^ required by this bound in `map` |
| help: consider wrapping the function in a closure |
| | |
| LL | map(|arg0| Sexpr::Ident(&mut *arg0)); |
| | ++++++ ++++++++++++ |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0631`. |