ices/82470.rs: fixed with errors (#721)

=== stdout ===
=== stderr ===
error[E0706]: functions in traits cannot be declared `async`
 --> /home/runner/work/glacier/glacier/ices/82470.rs:2:5
  |
2 |       async fn async_fn() {
  |       ^----
  |       |
  |  _____`async` because of this
  | |
3 | |         || {};
4 | |     }
  | |_____^
  |
  = note: `async` trait functions are not currently supported
  = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait

error: aborting due to previous error

For more information about this error, try `rustc --explain E0706`.
==============

Co-authored-by: rustbot <[email protected]>

Author: github-actions[bot]