1 files changed, 65 insertions, 0 deletions
diff --git a/src/test/ui/lint/unused/unused-closure.stderr b/src/test/ui/lint/unused/unused-closure.stderr
new file mode 100644
index 000000000..265d3e8e0
--- /dev/null
+++ b/src/test/ui/lint/unused/unused-closure.stderr
@@ -0,0 +1,65 @@
+error: unused closure that must be used
+  --> $DIR/unused-closure.rs:9:5
+   |
+LL | /     || {
+LL | |         println!("Hello!");
+LL | |     };
+   | |______^
+   |
+note: the lint level is defined here
+  --> $DIR/unused-closure.rs:6:9
+   |
+LL | #![deny(unused_must_use)]
+   |         ^^^^^^^^^^^^^^^
+   = note: closures are lazy and do nothing unless called
+
+error: unused implementer of `Future` that must be used
+  --> $DIR/unused-closure.rs:13:5
+   |
+LL |     async {};
+   |     ^^^^^^^^^
+   |
+   = note: futures do nothing unless you `.await` or poll them
+
+error: unused closure that must be used
+  --> $DIR/unused-closure.rs:14:5
+   |
+LL |     || async {};
+   |     ^^^^^^^^^^^^
+   |
+   = note: closures are lazy and do nothing unless called
+
+error: unused closure that must be used
+  --> $DIR/unused-closure.rs:15:5
+   |
+LL |     async || {};
+   |     ^^^^^^^^^^^^
+   |
+   = note: closures are lazy and do nothing unless called
+
+error: unused array of boxed arrays of closures that must be used
+  --> $DIR/unused-closure.rs:18:5
+   |
+LL |     [Box::new([|| {}; 10]); 1];
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: closures are lazy and do nothing unless called
+
+error: unused closure that must be used
+  --> $DIR/unused-closure.rs:20:5
+   |
+LL |     vec![|| "a"].pop().unwrap();
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: closures are lazy and do nothing unless called
+
+error: unused closure that must be used
+  --> $DIR/unused-closure.rs:23:9
+   |
+LL |         || true;
+   |         ^^^^^^^^
+   |
+   = note: closures are lazy and do nothing unless called
+
+error: aborting due to 7 previous errors
+