// search for `for _ in vec![…]`
if_chain! {
- if let Some((_, arg, _)) = higher::for_loop(expr);
+ if let Some((_, arg, _, _)) = higher::for_loop(expr);
if let Some(vec_args) = higher::vec_macro(cx, arg);
if is_copy(cx, vec_type(cx.typeck_results().expr_ty_adjusted(arg)));
then {