ices/90409-2.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#90409

#![feature(type_alias_impl_trait)]
#![crate_type = "lib"]

use std::future::Future;

trait Bar {
    fn bar(&self);
}

type FooFuture<B> = impl Future<Output = ()>;

fn foo<B: Bar>(bar: B) -> FooFuture<B> {
    async move { bar.bar() }
}

pub fn mainish(ctx: &mut std::task::Context) {
    let boom: FooFuture<u32> = unsafe { core::mem::zeroed() };
    Box::pin(boom).as_mut().poll(ctx);
}

=== stdout ===
=== stderr ===
error[E0277]: the trait bound `B: Bar` is not satisfied
  --> /home/runner/work/glacier/glacier/ices/90409-2.rs:13:5
   |
13 |     async move { bar.bar() }
   |     ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Bar` is not implemented for `B`
   |
note: required by a bound in `foo`
  --> /home/runner/work/glacier/glacier/ices/90409-2.rs:12:11
   |
12 | fn foo<B: Bar>(bar: B) -> FooFuture<B> {
   |           ^^^ required by this bound in `foo`
help: consider restricting type parameter `B`
   |
10 | type FooFuture<B: Bar> = impl Future<Output = ()>;
   |                 +++++

error: aborting due to previous error

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