clean up action logging

Change-Id: I3c3ca886da7806825b4c949b61b281972d454650
diff --git a/aos/common/actions/actions.h b/aos/common/actions/actions.h
index fa89995..fd88903 100644
--- a/aos/common/actions/actions.h
+++ b/aos/common/actions/actions.h
@@ -225,7 +225,10 @@
 
 template <typename T>
 bool TypedAction<T>::DoRunning() {
-  if (!sent_started_) return false;
+  if (!sent_started_) {
+    LOG(DEBUG, "haven't sent start message yet\n");
+    return false;
+  }
   if (has_started_) {
     queue_group_->status.FetchNext();
     CheckInterrupted();