]> git.lizzy.rs Git - rust.git/blob - src/test/ui/traits/negative-impls/negative-specializes-positive-item.stderr
warn against 'specialization' feature
[rust.git] / src / test / ui / traits / negative-impls / negative-specializes-positive-item.stderr
1 warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
2   --> $DIR/negative-specializes-positive-item.rs:1:12
3    |
4 LL | #![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
10 error[E0751]: found both positive and negative implementation of trait `MyTrait` for type `u32`:
11   --> $DIR/negative-specializes-positive-item.rs:11:1
12    |
13 LL | impl<T> MyTrait for T {
14    | --------------------- positive implementation here
15 ...
16 LL | impl !MyTrait for u32 {}
17    | ^^^^^^^^^^^^^^^^^^^^^ negative implementation here
18
19 error: aborting due to previous error; 1 warning emitted
20
21 For more information about this error, try `rustc --explain E0751`.