1 warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
2 --> $DIR/issue-87429-specialization.rs:3:12
4 LL | #![feature(specialization)]
7 = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
8 = help: consider using `min_specialization` instead, which is more stable and complete
9 = note: `#[warn(incomplete_features)]` on by default
11 error[E0277]: can't compare `Foo` with `Foo`
12 --> $DIR/issue-87429-specialization.rs:20:31
14 LL | default type Member<'a> = Foo;
15 | ^^^ no implementation for `Foo == Foo`
17 = help: the trait `PartialEq` is not implemented for `Foo`
18 note: required by a bound in `Family::Member`
19 --> $DIR/issue-87429-specialization.rs:7:22
21 LL | type Member<'a>: for<'b> PartialEq<Self::Member<'b>>;
22 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Family::Member`
23 help: consider annotating `Foo` with `#[derive(PartialEq)]`
25 LL | #[derive(PartialEq)]
28 error: aborting due to previous error; 1 warning emitted
30 For more information about this error, try `rustc --explain E0277`.