1 files changed, 12 insertions, 0 deletions
diff --git a/tests/ui/lint/unused/auxiliary/must-use-foreign.rs b/tests/ui/lint/unused/auxiliary/must-use-foreign.rs
new file mode 100644
index 000000000..f773f09c3
--- /dev/null
+++ b/tests/ui/lint/unused/auxiliary/must-use-foreign.rs
@@ -0,0 +1,12 @@
+// edition:2021
+
+use std::future::Future;
+
+pub struct Manager;
+
+impl Manager {
+    #[must_use]
+    pub async fn new() -> (Self, impl Future<Output = ()>) {
+        (Manager, async {})
+    }
+}