Update

hack/run-rollouts-manager-e2e-tests.sh

@@ -181,10 +181,16 @@ if [ -f "/tmp/e2e-operator-run.log" ]; then
   # Grep the log for unexpected errors
   # - Ignore errors that are expected to occur
 
-  UNEXPECTED_ERRORS_FOUND_TEXT=`cat /tmp/e2e-operator-run.log | grep "ERROR" | grep -v "because it is being terminated" | grep -v "the object has been modified; please apply your changes to the latest version and try again" | grep -v "unable to fetch" | grep -v "StorageError"` | grep -v "client rate limiter Wait returned an error: context canceled"
+
+
+  UNEXPECTED_ERRORS_FOUND_TEXT=`cat /tmp/e2e-operator-run.log | grep "ERROR" | grep -v "because it is being terminated" | grep -v "the object has been modified; please apply your changes to the latest version and try again" | grep -v "unable to fetch" | grep -v "StorageError" | grep -v "client rate limiter Wait returned an error: context canceled"`
+
+  set +u # temporarily allow undefined vars
 
   if [ "$UNEXPECTED_ERRORS_FOUND_TEXT" != "" ]; then
 
+    set -u # reject undefined vars, again
+
     UNEXPECTED_ERRORS_COUNT=`echo $UNEXPECTED_ERRORS_FOUND_TEXT | grep "ERROR" | wc -l`
 
     if [ "$UNEXPECTED_ERRORS_COUNT" != "0" ]; then