| error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types | |
| --> $DIR/return-cycle-2.rs:6:34 | |
| | | |
| LL | fn as_ref(_: i32, _: i32) -> _ { | |
| | ^ | |
| | | | |
| | not allowed in type signatures | |
| | help: replace with the correct return type: `Token<&'static T>` | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0121`. |