ices/57276.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#57276

#![feature(arbitrary_self_types, dispatch_from_dyn)]

use std::ops::{Deref, DispatchFromDyn};

trait Trait<T: Deref<Target=Self> + DispatchFromDyn<T>> {
    fn foo(self: T) -> dyn Trait<T>;
}

=== stdout ===
=== stderr ===
error[E0601]: `main` function not found in crate `57276`
 --> /home/runner/work/glacier/glacier/ices/57276.rs:1:1
  |
1 | / #![feature(arbitrary_self_types, dispatch_from_dyn)]
2 | |
3 | | use std::ops::{Deref, DispatchFromDyn};
4 | |
5 | | trait Trait<T: Deref<Target=Self> + DispatchFromDyn<T>> {
6 | |     fn foo(self: T) -> dyn Trait<T>;
7 | | }
  | |_^ consider adding a `main` function to `/home/runner/work/glacier/glacier/ices/57276.rs`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0601`.
==============

[JohnTitor]

Seems rust-lang/rust#78422 fixed it.