warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/fuzzing-ice-134905.rs:3:12
   |
LL | #![feature(specialization)]
   |            ^^^^^^^^^^^^^^
   |
   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
   = help: consider using `min_specialization` instead, which is more stable and complete
   = note: `#[warn(incomplete_features)]` on by default

error[E0277]: the trait bound `(): Valid` is not satisfied
  --> $DIR/fuzzing-ice-134905.rs:12:23
   |
LL |     default type Ty = ();
   |                       ^^ the trait `Valid` is not implemented for `()`
   |
help: this trait has no implementations, consider adding one
  --> $DIR/fuzzing-ice-134905.rs:20:1
   |
LL | trait Valid {}
   | ^^^^^^^^^^^
note: required by a bound in `Iterate::Ty`
  --> $DIR/fuzzing-ice-134905.rs:6:14
   |
LL |     type Ty: Valid;
   |              ^^^^^ required by this bound in `Iterate::Ty`

error[E0210]: type parameter `T` must be used as the type parameter for some local type (e.g., `MyStruct<T>`)
  --> $DIR/fuzzing-ice-134905.rs:17:10
   |
LL | impl<'a, T> Eq for T where <T as Iterate<'a>>::Ty: Valid {}
   |          ^ type parameter `T` must be used as the type parameter for some local type
   |
   = note: implementing a foreign trait is only possible if at least one of the types for which it is implemented is local
   = note: only traits defined in the current crate can be implemented for a type parameter

error: aborting due to 2 previous errors; 1 warning emitted

Some errors have detailed explanations: E0210, E0277.
For more information about an error, try `rustc --explain E0210`.