ices/68393.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#68393

pub enum EFoo { A }

pub trait Foo {
    const X: EFoo;
}

struct Abc;

impl Foo for Abc {
    const X: EFoo = EFoo::A;
}

struct Def;
impl Foo for Def {
    const X: EFoo = EFoo::A;
}

pub fn test<A: Foo, B: Foo>(arg: EFoo) {
    let A::X = arg;
}

fn main() {}

=== stdout ===
=== stderr ===
error[E0158]: associated consts cannot be referenced in patterns
  --> /home/runner/work/glacier/glacier/ices/68393.rs:19:9
   |
19 |     let A::X = arg;
   |         ^^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0158`.
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