Ensure stale run is not written back, in single-threaded test code

1 files changed, 1 insertions, 1 deletions

diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/JobRunner.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/JobRunner.java
index c204f42e261..cd48d6839f3 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/JobRunner.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/maintenance/JobRunner.java
@@ -92,7 +92,7 @@ public class JobRunner extends ControllerMaintainer {
             else if (run.hasFailed() || run.sleepUntil().map(sleepUntil -> ! sleepUntil.isAfter(controller().clock().instant())).orElse(true))
                 run.readySteps().forEach(step -> executors.execute(() -> advance(run.id(), step)));
 
-            return run;
+            return null;
         });
     }