ices/68394.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#68394

fn main() {
    let x = 255u8;
    let 0u8..=x = 0;
}

=== stdout ===
=== stderr ===
error[E0080]: runtime values cannot be referenced in patterns
 --> /home/runner/work/glacier/glacier/ices/68394.rs:3:15
  |
3 |     let 0u8..=x = 0;
  |               ^

warning: unused variable: `x`
 --> /home/runner/work/glacier/glacier/ices/68394.rs:2:9
  |
2 |     let x = 255u8;
  |         ^ help: consider prefixing with an underscore: `_x`
  |
  = note: `#[warn(unused_variables)]` on by default

error: aborting due to previous error

For more information about this error, try `rustc --explain E0080`.
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