ices/78561.rs: fixed with errors

=== stdout ===
=== stderr ===
error[E0601]: `main` function not found in crate `78561`
  --> /home/runner/work/glacier/glacier/ices/78561.rs:1:1
   |
1  | / #![feature(type_alias_impl_trait, member_constraints)]
2  | |
3  | | pub trait Trait {
4  | |     type A;
...  |
19 | |     fn f() -> Self::A {}
20 | | }
   | |_^ consider adding a `main` function to `/home/runner/work/glacier/glacier/ices/78561.rs`

error: aborting due to previous error

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

Author: rustbot