=== stdout ===
=== stderr ===
error[E0277]: `main` has invalid return type `impl Trait<for<'a> 'a, Out = impl ?Sized>`
 --> /home/runner/work/glacier/glacier/ices/54895.rs:7:14
  |
7 | fn main() -> impl for<'a> Trait<'a, Out = impl ?Sized + 'a> {
  |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `main` can only return types that implement `Termination`
  |
  = help: consider using `()`, or a `Result`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
==============