1 warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
2 --> $DIR/specialization-polarity.rs:5:12
4 LL | #![feature(specialization)]
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
11 error[E0751]: found both positive and negative implementation of trait `Foo` for type `u8`:
12 --> $DIR/specialization-polarity.rs:10:1
14 LL | impl<T> Foo for T {}
15 | ----------------- positive implementation here
16 LL | impl !Foo for u8 {}
17 | ^^^^^^^^^^^^^^^^ negative implementation here
19 error[E0751]: found both positive and negative implementation of trait `Bar` for type `u8`:
20 --> $DIR/specialization-polarity.rs:15:1
22 LL | impl<T> !Bar for T {}
23 | ------------------ negative implementation here
24 LL | impl Bar for u8 {}
25 | ^^^^^^^^^^^^^^^ positive implementation here
27 error: aborting due to 2 previous errors; 1 warning emitted
29 For more information about this error, try `rustc --explain E0751`.