ices/78721.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#78721

#![feature(impl_trait_in_bindings)]

struct Bug {
    V1: [(); {
        let f: impl core::future::Future<Output = u8> = async { 1 };
        1
    }],
}

fn main() {}

=== stdout ===
=== stderr ===
warning: the feature `impl_trait_in_bindings` is incomplete and may not be safe to use and/or cause compiler crashes
 --> /home/runner/work/glacier/glacier/ices/78721.rs:1:12
  |
1 | #![feature(impl_trait_in_bindings)]
  |            ^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(incomplete_features)]` on by default
  = note: see issue #63065 <https:/rust-lang/rust/issues/63065> for more information

error: `async` blocks are not allowed in constants
 --> /home/runner/work/glacier/glacier/ices/78721.rs:5:57
  |
5 |         let f: impl core::future::Future<Output = u8> = async { 1 };
  |                                                         ^^^^^^^^^^^

error[E0493]: destructors cannot be evaluated at compile-time
 --> /home/runner/work/glacier/glacier/ices/78721.rs:5:13
  |
5 |         let f: impl core::future::Future<Output = u8> = async { 1 };
  |             ^ constants cannot evaluate destructors
6 |         1
7 |     }],
  |     - value is dropped here

error: aborting due to 2 previous errors; 1 warning emitted

For more information about this error, try `rustc --explain E0493`.
==============