Ignore iter_cloned_collect Clippy lint in test
Ignore iter_cloned_collect Clippy lint in test

    error: called `iter().copied().collect()` on a slice to create a `Vec`. Calling `to_vec()` is both faster and more readable
      --> tests/test_expr.rs:18:30
       |
    18 |     #[error("#error {}", (.0).iter().copied().collect::<Vec<_>>().join(" "))]
       |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `.to_vec()`

dtolnay/thiserror