compiler/rustc_error_codes/src/error_codes/E0379.md


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A trait method was declared const.

Erroneous code example:

```compile_fail,E0379
trait Foo {
    const fn bar() -> u32; // error!
}
```

Trait methods cannot be declared `const` by design. For more information, see
[RFC 911].

[RFC 911]: https://github.com/rust-lang/rfcs/pull/911