From d47b7bb7aa1d152dca81a47c50ecddc61435ffe9 Mon Sep 17 00:00:00 2001
From: Michael Goulet <michael@errs.io>
Date: Tue, 28 Nov 2023 00:59:51 +0000
Subject: [PATCH] Appease the tools: clippy, rustdoc

---
 clippy_lints/src/len_zero.rs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/clippy_lints/src/len_zero.rs b/clippy_lints/src/len_zero.rs
index 83af551fcd3c..8c032b170236 100644
--- a/clippy_lints/src/len_zero.rs
+++ b/clippy_lints/src/len_zero.rs
@@ -8,8 +8,8 @@ use rustc_hir::def::Res;
 use rustc_hir::def_id::{DefId, DefIdSet};
 use rustc_hir::{
     AssocItemKind, BinOpKind, Expr, ExprKind, FnRetTy, GenericArg, GenericBound, ImplItem, ImplItemKind,
-    ImplicitSelfKind, Item, ItemKind, LangItem, Mutability, Node, PatKind, PathSegment, PrimTy, QPath, TraitItemRef,
-    TyKind, TypeBindingKind,
+    ImplicitSelfKind, Item, ItemKind, Mutability, Node, PatKind, PathSegment, PrimTy, QPath, TraitItemRef,
+    TyKind, TypeBindingKind, OpaqueTyOrigin,
 };
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::{self, AssocKind, FnSig, Ty};
@@ -289,8 +289,10 @@ fn extract_future_output<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<&
             kind: ItemKind::OpaqueTy(opaque),
             ..
         } = item
-        && opaque.bounds.len() == 1
-        && let GenericBound::LangItemTrait(LangItem::Future, _, _, generic_args) = &opaque.bounds[0]
+        && let OpaqueTyOrigin::AsyncFn(_) = opaque.origin
+        && let [GenericBound::Trait(trait_ref, _)] = &opaque.bounds
+        && let Some(segment) = trait_ref.trait_ref.path.segments.last()
+        && let Some(generic_args) = segment.args
         && generic_args.bindings.len() == 1
         && let TypeBindingKind::Equality {
             term: