ices/80371.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#80371

pub struct Header<'a> {
    pub value: &'a [u8],
}

pub fn test() {
    let headers = [Header{value: &[]}; 128];
}

fn main() {}

=== stdout ===
=== stderr ===
warning: unused variable: `headers`
 --> /home/runner/work/glacier/glacier/ices/80371.rs:6:9
  |
6 |     let headers = [Header{value: &[]}; 128];
  |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_headers`
  |
  = note: `#[warn(unused_variables)]` on by default

error[E0277]: the trait bound `Header<'_>: Copy` is not satisfied
 --> /home/runner/work/glacier/glacier/ices/80371.rs:6:19
  |
6 |     let headers = [Header{value: &[]}; 128];
  |                   ^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `Header<'_>`
  |
  = note: the `Copy` trait is required because the repeated element will be copied

error: aborting due to previous error; 1 warning emitted

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

[JohnTitor]

Fixed by rust-lang/rust#80404.