rustup https://github.com/rust-lang/rust/pull/68944

clippy_lints/src/utils/usage.rs

@@ -93,7 +93,7 @@ impl<'tcx> Visitor<'tcx> for UsedVisitor {
         }
     }
 
-    fn nested_visit_map(&mut self) -> NestedVisitorMap<'_, Self::Map> {
+    fn nested_visit_map(&mut self) -> NestedVisitorMap<Self::Map> {
         NestedVisitorMap::None
     }
 }