| warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes |
| --> $DIR/specialization-wfcheck.rs:3:12 |
| | |
| LL | #![feature(specialization)] |
| | ^^^^^^^^^^^^^^ |
| | |
| = note: `#[warn(incomplete_features)]` on by default |
| = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information |
| |
| error[E0277]: the trait bound `U: Eq` is not satisfied |
| --> $DIR/specialization-wfcheck.rs:7:17 |
| | |
| LL | trait Foo<'a, T: Eq + 'a> { } |
| | -- required by this bound in `Foo` |
| LL | |
| LL | default impl<U> Foo<'static, U> for () {} |
| | ^^^^^^^^^^^^^^^ the trait `Eq` is not implemented for `U` |
| | |
| help: consider restricting type parameter `U` |
| | |
| LL | default impl<U: Eq> Foo<'static, U> for () {} |
| | ^^^^ |
| |
| error: aborting due to previous error; 1 warning emitted |
| |
| For more information about this error, try `rustc --explain E0277`. |
