ices/67830.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#67830

trait MyFn<Arg> {
    type Output;
    fn call(&self, arg: Arg) -> Self::Output;
}

struct Wrap<F>(F);

impl<A, B, F> MyFn<A> for Wrap<F>
where
    F: Fn(A) -> B
{
    type Output = B;

    fn call(&self, arg: A) -> Self::Output {
        (self.0)(arg)
    }
}


struct A;
fn test() -> impl for<'a> MyFn<&'a A, Output=impl Iterator + 'a> {
    Wrap(|a| Some(a).into_iter())
}

fn main() {}

=== stdout ===
=== stderr ===
error: implementation of `FnOnce` is not general enough
  --> /home/runner/work/glacier/glacier/ices/67830.rs:22:5
   |
22 |     Wrap(|a| Some(a).into_iter())
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
   |
   = note: closure with signature `fn(&'2 A) -> std::option::IntoIter<&A>` must implement `FnOnce<(&'1 A,)>`, for any lifetime `'1`...
   = note: ...but it actually implements `FnOnce<(&'2 A,)>`, for some specific lifetime `'2`

error: aborting due to previous error

==============