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30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/specialization-wfcheck.rs:3:12
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LL | #![feature(specialization)]
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| ^^^^^^^^^^^^^^
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= note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
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= help: consider using `min_specialization` instead, which is more stable and complete
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= note: `#[warn(incomplete_features)]` on by default
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error[E0277]: the trait bound `U: Eq` is not satisfied
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--> $DIR/specialization-wfcheck.rs:7:17
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LL | default impl<U> Foo<'static, U> for () {}
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| ^^^^^^^^^^^^^^^ the trait `Eq` is not implemented for `U`
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note: required by a bound in `Foo`
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--> $DIR/specialization-wfcheck.rs:5:18
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LL | trait Foo<'a, T: Eq + 'a> { }
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| ^^ required by this bound in `Foo`
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help: consider restricting type parameter `U`
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LL | default impl<U: std::cmp::Eq> Foo<'static, U> for () {}
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| ++++++++++++++
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error: aborting due to 1 previous error; 1 warning emitted
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For more information about this error, try `rustc --explain E0277`.
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