Welcome to Scala version 2.10.4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0).
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scala> import ActorDSL._
import ActorDSL._

scala> implicit val system = ActorSystem("repl")
system: akka.actor.ActorSystem = akka://repl

scala> implicit val in = inbox()
in: akka.actor.ActorDSL.Inbox = akka.actor.dsl.Inbox$Inbox@30e049af

scala> system.actorSelection("/user/non-existing") ! Identify(0)

scala> in.receive()
res1: Any = ActorIdentity(0,None)

scala> system.actorSelection("/user/non-*") ! Identify(0)

scala> in.receive()
java.util.concurrent.TimeoutException: deadline passed
	at akka.actor.dsl.Inbox$InboxActor$$anonfun$receive$1.applyOrElse(Inbox.scala:117)
	at scala.PartialFunction$AndThen.applyOrElse(PartialFunction.scala:184)
	at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
	at akka.actor.dsl.Inbox$InboxActor.aroundReceive(Inbox.scala:62)
	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
	at akka.actor.ActorCell.invoke(ActorCell.scala:487)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
	at akka.dispatch.Mailbox.run(Mailbox.scala:220)
	at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)
	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)