1warning: 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
3   |
4LL | #![feature(specialization)]
5   |            ^^^^^^^^^^^^^^
6   |
7   = note: `#[warn(incomplete_features)]` on by default
8   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
9   = help: consider using `min_specialization` instead, which is more stable and complete
10
11error[E0277]: can't compare `Foo` with `Foo`
12  --> $DIR/issue-87429-specialization.rs:21:5
13   |
14LL |     default type Member<'a> = Foo;
15   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no implementation for `Foo == Foo`
16   |
17   = help: the trait `PartialEq` is not implemented for `Foo`
18note: required by a bound in `Family::Member`
19  --> $DIR/issue-87429-specialization.rs:8:22
20   |
21LL |     type Member<'a>: for<'b> PartialEq<Self::Member<'b>>;
22   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Family::Member`
23
24error: aborting due to previous error; 1 warning emitted
25
26For more information about this error, try `rustc --explain E0277`.
27