ices/64755.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#64755

struct Foo;

trait MyTrait {
    type Item<T>;
}

impl MyTrait for Foo {
    type Item<T> = T;
}

=== stdout ===
=== stderr ===
error[E0658]: generic associated types are unstable
 --> /home/runner/work/glacier/glacier/ices/64755.rs:4:5
  |
4 |     type Item<T>;
  |     ^^^^^^^^^^^^^
  |
  = note: for more information, see https://github.com/rust-lang/rust/issues/44265
  = help: add `#![feature(generic_associated_types)]` to the crate attributes to enable

error[E0658]: generic associated types are unstable
 --> /home/runner/work/glacier/glacier/ices/64755.rs:8:5
  |
8 |     type Item<T> = T;
  |     ^^^^^^^^^^^^^^^^^
  |
  = note: for more information, see https://github.com/rust-lang/rust/issues/44265
  = help: add `#![feature(generic_associated_types)]` to the crate attributes to enable

error[E0601]: `main` function not found in crate `64755`
 --> /home/runner/work/glacier/glacier/ices/64755.rs:1:1
  |
1 | / struct Foo;
2 | |
3 | | trait MyTrait {
4 | |     type Item<T>;
... |
8 | |     type Item<T> = T;
9 | | }
  | |_^ consider adding a `main` function to `/home/runner/work/glacier/glacier/ices/64755.rs`

error: type-generic associated types are not yet implemented
 --> /home/runner/work/glacier/glacier/ices/64755.rs:4:5
  |
4 |     type Item<T>;
  |     ^^^^^^^^^^^^^
  |
  = note: for more information, see https://github.com/rust-lang/rust/issues/44265

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0601, E0658.
For more information about an error, try `rustc --explain E0601`.
==============