diff --git a/src/test/ui/emit-artifact-notifications.polonius.stderr b/src/test/ui/emit-artifact-notifications.polonius.stderr
new file mode 100644
index 00000000000..47b48b399c2
--- /dev/null
+++ b/src/test/ui/emit-artifact-notifications.polonius.stderr
@@ -0,0 +1 @@
+{"artifact":"$TEST_BUILD_DIR/emit-artifact-notifications.polonius/libemit_artifact_notifications.rmeta","emit":"metadata"}