| error[E0277]: the size for values of type `str` cannot be known at compilation time |
| --> $DIR/issue-50940-with-feature.rs:5:5 |
| | |
| LL | A as fn(str) -> A<str>; |
| | ^ doesn't have a size known at compile-time |
| | |
| = help: within `A<str>`, the trait `Sized` is not implemented for `str` |
| note: required because it appears within the type `A<str>` |
| --> $DIR/issue-50940-with-feature.rs:4:12 |
| | |
| LL | struct A<X: ?Sized>(X); |
| | ^ |
| = note: the return type of a function must have a statically known size |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
