ices/81006.rs: fixed with errors

=== stdout ===
=== stderr ===
error: 1 positional argument in format string, but no arguments were given
 --> /home/runner/work/glacier/glacier/ices/81006.rs:2:23
  |
2 |     let _ = format!("→{} \t");
  |                       ^^

error: aborting due to previous error

==============

Author: rustbot