Fix uses of TraitRef::identity in clippy and rustdoc

Author: WaffleLapkin

src/librustdoc/clean/mod.rs

@@ -131,7 +131,7 @@ fn clean_generic_bound<'tcx>(
         hir::GenericBound::LangItemTrait(lang_item, span, _, generic_args) => {
             let def_id = cx.tcx.require_lang_item(lang_item, Some(span));
 
-            let trait_ref = ty::TraitRef::identity(cx.tcx, def_id);
+            let trait_ref = ty::Binder::dummy(ty::TraitRef::identity(cx.tcx, def_id));
 
             let generic_args = clean_generic_args(generic_args, cx);
             let GenericArgs::AngleBracketed { bindings, .. } = generic_args

src/tools/clippy/clippy_lints/src/escape.rs

@@ -94,8 +94,7 @@ impl<'tcx> LateLintPass<'tcx> for BoxedLocal {
                         if trait_item.kind == (AssocItemKind::Fn { has_self: true }) {
                             trait_self_ty = Some(
                                 TraitRef::identity(cx.tcx, trait_item.id.owner_id.to_def_id())
-                                    .self_ty()
-                                    .skip_binder(),
+                                    .self_ty(),
                             );
                         }
                     }

src/tools/clippy/clippy_lints/src/methods/mod.rs

@@ -3500,8 +3500,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
                 let first_arg_span = first_arg_ty.span;
                 let first_arg_ty = hir_ty_to_ty(cx.tcx, first_arg_ty);
                 let self_ty = TraitRef::identity(cx.tcx, item.owner_id.to_def_id())
-                    .self_ty()
-                    .skip_binder();
+                    .self_ty();
                 wrong_self_convention::check(
                     cx,
                     item.ident.name.as_str(),
@@ -3519,8 +3518,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
             if let TraitItemKind::Fn(_, _) = item.kind;
             let ret_ty = return_ty(cx, item.owner_id);
             let self_ty = TraitRef::identity(cx.tcx, item.owner_id.to_def_id())
-                .self_ty()
-                .skip_binder();
+                .self_ty();
             if !ret_ty.contains(self_ty);
 
             then {