| error[E0277]: the trait bound `(): Root` is not satisfied | |
| --> $DIR/nested.rs:22:18 | |
| | | |
| LL | needs_root::<()>(); | |
| | ^^ the trait `Root` is not implemented for `()` | |
| | | |
| note: required by a bound in `needs_root` | |
| --> $DIR/nested.rs:19:18 | |
| | | |
| LL | fn needs_root<T: Root>() {} | |
| | ^^^^ required by this bound in `needs_root` | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0277`. |