Hello all,

When I provide a resuming materializer to the stream, the exceptions that 
occurred in the stream do not get logged. Is there any way to log these 
exceptions ?

import akka.actor.ActorSystem
import akka.stream.scaladsl.Source
import akka.stream.{ActorMaterializer, ActorMaterializerSettings, Materializer, 
Supervision}

import scala.concurrent.duration.DurationInt

object Demo extends App {

  private implicit val actorSystem: ActorSystem = ActorSystem()

  lazy val settings: ActorMaterializerSettings =
    
ActorMaterializerSettings(actorSystem).withSupervisionStrategy(Supervision.getResumingDecider)

  implicit lazy val resumingMat: Materializer = ActorMaterializer(settings)

  var counter = 0
  def eventGenerator(): Int = {
    counter += 1
    if (counter > 5) throw new RuntimeException("Could not create an event")
    else 1
  }

  Source.tick(0.millis, 10.millis, ()).map(_ ⇒ 
eventGenerator()).runForeach(println)
}

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