ices/80678.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#80678

#![allow(bare_trait_objects)]

trait Bar = PartialEq;
fn main() {
    a: Bar
}

=== stdout ===
=== stderr ===
error[E0425]: cannot find value `a` in this scope
 --> /home/runner/work/glacier/glacier/ices/80678.rs:5:5
  |
5 |     a: Bar
  |     ^ expecting a type here because of type ascription
  |
help: you might have meant to write a `struct` literal
  |
4 ~ fn main() { SomeStruct {
5 |     a: Bar
6 ~ }}
  |

error[E0658]: trait aliases are experimental
 --> /home/runner/work/glacier/glacier/ices/80678.rs:3:1
  |
3 | trait Bar = PartialEq;
  | ^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #41517 <https://github.com/rust-lang/rust/issues/41517> for more information
  = help: add `#![feature(trait_alias)]` to the crate attributes to enable

error[E0393]: the type parameter `Rhs` must be explicitly specified
 --> /home/runner/work/glacier/glacier/ices/80678.rs:5:8
  |
5 |     a: Bar
  |        ^^^ missing reference to `Rhs`
  |
  = note: because of the default `Self` reference, type parameters must be specified on object types

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0393, E0425, E0658.
For more information about an error, try `rustc --explain E0393`.
==============