| warning: the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes | |
| --> $DIR/supertrait.rs:3:12 | |
| | | |
| LL | #![feature(negative_bounds)] | |
| | ^^^^^^^^^^^^^^^ | |
| | | |
| = note: `#[warn(incomplete_features)]` on by default | |
| warning: 1 warning emitted | |