12:18:29,982 PM [testsystem-akka.actor.default-dispatcher-5] [INFO] RepointableActorRef - Message [java.lang.String] from Actor[akka://testsystem/system/testActor-1#692484945] to Actor[akka://testsystem/user/pingpongactor#-1925008982] was not delivered. [1] dead letters encountered. If this is not an expected behavior then Actor[akka://testsystem/user/pingpongactor#-1925008982] may have terminated unexpectedly. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
12:18:29,982 PM [testsystem-akka.actor.default-dispatcher-5] [INFO] CoordinatedShutdown - Running CoordinatedShutdown with reason [ActorSystemTerminateReason]
12:18:30,150 PM [main] [ERROR] MessageTrackerTest - An error occurred : 
> Last Expected Message = org.opendaylight.controller.cluster.common.actor.MessageTrackerTest$Foo@6d0cc47d
> Current Expected Message = org.opendaylight.controller.cluster.common.actor.MessageTrackerTest$Foo@56dae6
> Expected time in between messages = 10
> Actual time in between messages = 20
	> MessageProcessingTime [messageClass=class java.lang.String, elapsedTimeInMillis=0]
	> MessageProcessingTime [messageClass=class java.lang.Long, elapsedTimeInMillis=0]
	> MessageProcessingTime [messageClass=class java.lang.Integer, elapsedTimeInMillis=20]
12:18:30,152 PM [main] [ERROR] MessageTrackerTest - An error occurred : 
> Last Expected Message = null
> Current Expected Message = org.opendaylight.controller.cluster.common.actor.MessageTrackerTest$Foo@16ac67e3
> Expected time in between messages = 10
> Actual time in between messages = 20