1 files changed, 75 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/box_collection.stderr b/src/tools/clippy/tests/ui/box_collection.stderr
new file mode 100644
index 000000000..2b28598de
--- /dev/null
+++ b/src/tools/clippy/tests/ui/box_collection.stderr
@@ -0,0 +1,75 @@
+error: you seem to be trying to use `Box<Vec<..>>`. Consider using just `Vec<..>`
+  --> $DIR/box_collection.rs:21:15
+   |
+LL | fn test1(foo: Box<Vec<bool>>) {}
+   |               ^^^^^^^^^^^^^^
+   |
+   = note: `-D clippy::box-collection` implied by `-D warnings`
+   = help: `Vec<..>` is already on the heap, `Box<Vec<..>>` makes an extra allocation
+
+error: you seem to be trying to use `Box<String>`. Consider using just `String`
+  --> $DIR/box_collection.rs:28:15
+   |
+LL | fn test3(foo: Box<String>) {}
+   |               ^^^^^^^^^^^
+   |
+   = help: `String` is already on the heap, `Box<String>` makes an extra allocation
+
+error: you seem to be trying to use `Box<HashMap<..>>`. Consider using just `HashMap<..>`
+  --> $DIR/box_collection.rs:30:15
+   |
+LL | fn test4(foo: Box<HashMap<String, String>>) {}
+   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: `HashMap<..>` is already on the heap, `Box<HashMap<..>>` makes an extra allocation
+
+error: you seem to be trying to use `Box<HashSet<..>>`. Consider using just `HashSet<..>`
+  --> $DIR/box_collection.rs:32:15
+   |
+LL | fn test5(foo: Box<HashSet<i64>>) {}
+   |               ^^^^^^^^^^^^^^^^^
+   |
+   = help: `HashSet<..>` is already on the heap, `Box<HashSet<..>>` makes an extra allocation
+
+error: you seem to be trying to use `Box<VecDeque<..>>`. Consider using just `VecDeque<..>`
+  --> $DIR/box_collection.rs:34:15
+   |
+LL | fn test6(foo: Box<VecDeque<i32>>) {}
+   |               ^^^^^^^^^^^^^^^^^^
+   |
+   = help: `VecDeque<..>` is already on the heap, `Box<VecDeque<..>>` makes an extra allocation
+
+error: you seem to be trying to use `Box<LinkedList<..>>`. Consider using just `LinkedList<..>`
+  --> $DIR/box_collection.rs:36:15
+   |
+LL | fn test7(foo: Box<LinkedList<i16>>) {}
+   |               ^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: `LinkedList<..>` is already on the heap, `Box<LinkedList<..>>` makes an extra allocation
+
+error: you seem to be trying to use `Box<BTreeMap<..>>`. Consider using just `BTreeMap<..>`
+  --> $DIR/box_collection.rs:38:15
+   |
+LL | fn test8(foo: Box<BTreeMap<i8, String>>) {}
+   |               ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: `BTreeMap<..>` is already on the heap, `Box<BTreeMap<..>>` makes an extra allocation
+
+error: you seem to be trying to use `Box<BTreeSet<..>>`. Consider using just `BTreeSet<..>`
+  --> $DIR/box_collection.rs:40:15
+   |
+LL | fn test9(foo: Box<BTreeSet<u64>>) {}
+   |               ^^^^^^^^^^^^^^^^^^
+   |
+   = help: `BTreeSet<..>` is already on the heap, `Box<BTreeSet<..>>` makes an extra allocation
+
+error: you seem to be trying to use `Box<BinaryHeap<..>>`. Consider using just `BinaryHeap<..>`
+  --> $DIR/box_collection.rs:42:16
+   |
+LL | fn test10(foo: Box<BinaryHeap<u32>>) {}
+   |                ^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: `BinaryHeap<..>` is already on the heap, `Box<BinaryHeap<..>>` makes an extra allocation
+
+error: aborting due to 9 previous errors
+