clippy::toplevel_ref_arg

Author: cuviper

src/iter/collect/mod.rs

@@ -139,8 +139,8 @@ where
                 // This works like `extend`, but `Vec::append` is more efficient.
                 let list = super::extend::collect(par_iter);
                 self.reserve(super::extend::len(&list));
-                for ref mut vec in list {
-                    self.append(vec);
+                for mut vec in list {
+                    self.append(&mut vec);
                 }
             }
         }

src/iter/extend.rs

@@ -43,8 +43,8 @@ fn as_list<T>(item: T) -> LinkedList<T> {
     list
 }
 
-fn list_append<T>(mut list1: LinkedList<T>, ref mut list2: LinkedList<T>) -> LinkedList<T> {
-    list1.append(list2);
+fn list_append<T>(mut list1: LinkedList<T>, mut list2: LinkedList<T>) -> LinkedList<T> {
+    list1.append(&mut list2);
     list1
 }