| error[E0277]: expected a `Fn<_>` closure, found `fn() -> str` |
| --> $DIR/builtin-fn-must-return-sized.rs:15:27 |
| | |
| LL | foo::<fn() -> str, _>(None, ()); |
| | --------------------- ^^^^ expected an `Fn<_>` closure, found `fn() -> str` |
| | | |
| | required by a bound introduced by this call |
| | |
| = help: the trait `Fn<_>` is not implemented for `fn() -> str` |
| note: required by a bound in `foo` |
| --> $DIR/builtin-fn-must-return-sized.rs:10:11 |
| | |
| LL | fn foo<F: Fn<T>, T: Tuple>(f: Option<F>, t: T) { |
| | ^^^^^ required by this bound in `foo` |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
