fn get_args_to_check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> Vec<(usize, String)> {
let mut args_to_check = Vec::new();
if let Some(def_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) {
fn get_args_to_check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> Vec<(usize, String)> {
let mut args_to_check = Vec::new();
if let Some(def_id) = cx.typeck_results().type_dependent_def_id(expr.hir_id) {
let generics = cx.tcx.predicates_of(def_id);
let fn_mut_preds = get_trait_predicates_for_trait_id(cx, generics, cx.tcx.lang_items().fn_mut_trait());
let ord_preds = get_trait_predicates_for_trait_id(cx, generics, cx.tcx.get_diagnostic_item(sym::Ord));
let generics = cx.tcx.predicates_of(def_id);
let fn_mut_preds = get_trait_predicates_for_trait_id(cx, generics, cx.tcx.lang_items().fn_mut_trait());
let ord_preds = get_trait_predicates_for_trait_id(cx, generics, cx.tcx.get_diagnostic_item(sym::Ord));