compiler/rustc_error_codes/src/error_codes/E0380.md - rust - Git at Google

 An auto trait was declared with a method or an associated item.

 Erroneous code example:

 ```compile_fail,E0380
 unsafe auto trait Trait {
     type Output; // error!
 }
 ```

 Auto traits cannot have methods or associated items. For more information see
 the [opt-in builtin traits RFC][RFC 19].

 [RFC 19]: https://rust-lang.github.io/rfcs/0019-opt-in-builtin-traits.html
	An auto trait was declared with a method or an associated item.

	Erroneous code example:

	```compile_fail,E0380
	unsafe auto trait Trait {
	type Output; // error!
	}
	```

	Auto traits cannot have methods or associated items. For more information see
	the [opt-in builtin traits RFC][RFC 19].

	[RFC 19]: https://rust-lang.github.io/rfcs/0019-opt-in-builtin-traits.html