diff --git a/tests/ui/meta/check-run-stdout-is-json-lines.rs b/tests/ui/meta/check-run-stdout-is-json-lines.rs
index f72d64322213b..44b565e6d20e0 100644
--- a/tests/ui/meta/check-run-stdout-is-json-lines.rs
+++ b/tests/ui/meta/check-run-stdout-is-json-lines.rs
@@ -18,6 +18,7 @@ fn main() {
 
     if cfg!(bad_list) {
         println!(r#"[ "this is invalid json", ]"#);
+        panic!("@@ OH HO HO @@");
     }
     if cfg!(bad_obj) {
         println!(r#"{{ "key": "this is invalid json", }}"#);