make error message more clear when logger initialization times out

akka-actor/src/main/scala/akka/event/Logging.scala

@@ -153,11 +153,12 @@ trait LoggingBus extends ActorEventBus {
   private def addLogger(system: ActorSystemImpl, clazz: Class[_ <: Actor], level: LogLevel, logName: String): ActorRef = {
     val name = "log" + Extension(system).id() + "-" + simpleName(clazz)
     val actor = system.systemActorOf(Props(clazz), name)
-    implicit val timeout = Timeout(3 seconds)
+    implicit val timeout = Timeout(5 seconds)
     import akka.pattern.ask
     val response = try Await.result(actor ? InitializeLogger(this), timeout.duration) catch {
       case _: TimeoutException ⇒
         publish(Warning(logName, this.getClass, "Logger " + name + " did not respond within " + timeout + " to InitializeLogger(bus)"))
+        "[TIMEOUT]"
     }
     if (response != LoggerInitialized)
       throw new LoggerInitializationException("Logger " + name + " did not respond with LoggerInitialized, sent instead " + response)