| error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types | |
| --> $DIR/leaking-unnameables.rs:8:18 | |
| | | |
| LL | pub fn f<T>() -> _ { | |
| | ^ | |
| | | | |
| | not allowed in type signatures | |
| | help: replace with the correct return type: `fn()` | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0121`. |