Akka actor creation/deletion race-condition

RaceMain.scala

package adriansr.test

import scala.util.control.NonFatal

import akka.actor.{Actor, ActorRef, ActorSystem, InvalidActorNameException, Props}

case class Test(name: String, retries: Int, delay: Long)
case class Create(iter: Long, cfg: Test)
case class Remove(iter: Long, actor: ActorRef, cfg: Test)

class Actor1 extends Actor {

    override def receive = {
        case test: Test =>
            self ! Create(0, test)

        case Create(idx, test) =>
            println(s"Creating $idx")
            try {
                val ref = context.actorOf(Props[Actor2], test.name)
                self ! Remove(idx, ref, test)
            } catch {
                case _: InvalidActorNameException =>
                    throw new Exception(s"Race-condition reproduced after $idx iterations")
                case NonFatal(e) =>
                    throw e
            }

        case Remove(idx, actor, test) =>
            println(s"Removing $idx")
            context.stop(actor)
            Thread.sleep(test.delay)
            self ! Create(idx+1, test)

        case _ =>
    }
}

class Actor2 extends Actor {
    def receive = {
        case _ =>
    }
}

object RaceMain extends App {
    val s = ActorSystem("Test")
    val act = s.actorOf(Props[Actor1])
    act ! Test("child", 1000, 2)
}