if matches!(ty.kind(), ty::Slice(_))
|| matches!(ty.kind(), ty::Array(_, _))
|| is_type_diagnostic_item(cx, ty, sym::vec_type)
- || is_type_diagnostic_item(cx, ty, sym!(vecdeque_type))
+ || is_type_diagnostic_item(cx, ty, sym::vecdeque_type)
{
return Slice::Swappable(lhs1, idx1, idx2);
}