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error[E0658]: `impl Trait` in type aliases is unstable
--> $DIR/issue-60371.rs:8:17
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LL | type Item = impl Bug;
| ^^^^^^^^
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= note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
= help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable
error[E0277]: the trait bound `(): Bug` is not satisfied
--> $DIR/issue-60371.rs:10:40
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LL | const FUN: fn() -> Self::Item = || ();
| ^^ the trait `Bug` is not implemented for `()`
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= help: the trait `Bug` is implemented for `&()`
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0277, E0658.
For more information about an error, try `rustc --explain E0277`.
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