akka-cluster-tools compiler warnings as fatal errors (#26647)

akka-cluster-tools/src/main/scala/akka/cluster/client/ClusterClient.scala

@@ -41,6 +41,7 @@ import akka.util.MessageBuffer
 import akka.util.ccompat._
 import scala.collection.immutable.{ HashMap, HashSet }
 
+@ccompatUsedUntil213
 object ClusterClientSettings {
 
   /**

akka-cluster-tools/src/main/scala/akka/cluster/client/protobuf/ClusterClientMessageSerializer.scala

@@ -7,7 +7,6 @@ package akka.cluster.client.protobuf
 import scala.collection.JavaConverters._
 import akka.actor.ExtendedActorSystem
 import akka.serialization.BaseSerializer
-import akka.serialization.SerializationExtension
 import akka.serialization.SerializerWithStringManifest
 import akka.cluster.client.ClusterReceptionist
 import akka.cluster.client.protobuf.msg.{ ClusterClientMessages => cm }
@@ -21,8 +20,6 @@ private[akka] class ClusterClientMessageSerializer(val system: ExtendedActorSyst
     with BaseSerializer {
   import ClusterReceptionist.Internal._
 
-  private lazy val serialization = SerializationExtension(system)
-
   private val ContactsManifest = "A"
   private val GetContactsManifest = "B"
   private val HeartbeatManifest = "C"

akka-cluster-tools/src/main/scala/akka/cluster/pubsub/DistributedPubSubMediator.scala

@@ -354,9 +354,11 @@ object DistributedPubSubMediator {
         case Terminated(ref) =>
           remove(ref)
         case Prune =>
-          for (d <- pruneDeadline if d.isOverdue) {
+          pruneDeadline match {
+            case Some(deadline) if deadline.isOverdue() =>
               pruneDeadline = None
               context.parent ! NoMoreSubscribers
+            case _ =>
           }
         case TerminateRequest =>
           if (subscribers.isEmpty && context.children.isEmpty)
@@ -640,7 +642,7 @@ class DistributedPubSubMediator(settings: DistributedPubSubSettings)
         }
       }
 
-    case msg @ RegisterTopic(t) =>
+    case RegisterTopic(t) =>
       registerTopic(t)
 
     case NoMoreSubscribers =>
@@ -655,7 +657,7 @@ class DistributedPubSubMediator(settings: DistributedPubSubSettings)
     case GetTopics =>
       sender ! CurrentTopics(getCurrentTopics())
 
-    case msg @ Subscribed(ack, ref) =>
+    case Subscribed(ack, ref) =>
       ref ! ack
 
     case msg @ Unsubscribe(topic, _, _) =>
@@ -667,7 +669,7 @@ class DistributedPubSubMediator(settings: DistributedPubSubSettings)
         }
       }
 
-    case msg @ Unsubscribed(ack, ref) =>
+    case Unsubscribed(ack, ref) =>
       ref ! ack
 
     case Status(otherVersions, isReplyToStatus) =>
@@ -751,7 +753,7 @@ class DistributedPubSubMediator(settings: DistributedPubSubSettings)
 
     case Count =>
       val count = registry.map {
-        case (owner, bucket) =>
+        case (_, bucket) =>
           bucket.content.count {
             case (_, valueHolder) => valueHolder.ref.isDefined
           }

akka-cluster-tools/src/main/scala/akka/cluster/pubsub/protobuf/DistributedPubSubMessageSerializer.scala

@@ -23,6 +23,7 @@ import java.io.NotSerializableException
 /**
  * INTERNAL API: Protobuf serializer of DistributedPubSubMediator messages.
  */
+@ccompatUsedUntil213
 private[akka] class DistributedPubSubMessageSerializer(val system: ExtendedActorSystem)
     extends SerializerWithStringManifest
     with BaseSerializer {

akka-cluster-tools/src/main/scala/akka/cluster/singleton/ClusterSingletonManager.scala

@@ -29,11 +29,12 @@ import akka.util.JavaDurationConverters._
 import scala.concurrent.Promise
 import akka.Done
 import akka.actor.CoordinatedShutdown
-import akka.annotation.{ ApiMayChange, DoNotInherit }
+import akka.annotation.DoNotInherit
 import akka.coordination.lease.LeaseUsageSettings
 import akka.pattern.ask
 import akka.util.Timeout
 import akka.coordination.lease.scaladsl.{ Lease, LeaseProvider }
+import com.github.ghik.silencer.silent
 
 import scala.util.control.NonFatal
 
@@ -43,6 +44,7 @@ object ClusterSingletonManagerSettings {
    * Create settings from the default configuration
    * `akka.cluster.singleton`.
    */
+  @silent // deprecated setting
   def apply(system: ActorSystem): ClusterSingletonManagerSettings =
     apply(system.settings.config.getConfig("akka.cluster.singleton"))
     // note that this setting has some additional logic inside the ClusterSingletonManager
@@ -476,7 +478,6 @@ class ClusterSingletonManager(singletonProps: Props, terminationMessage: Any, se
   import ClusterSingletonManager.Internal._
   import ClusterSingletonManager.Internal.OldestChangedBuffer._
   import settings._
-  import FSM.`->`
 
   val cluster = Cluster(context.system)
   val selfUniqueAddressOption = Some(cluster.selfUniqueAddress)

akka-cluster-tools/src/main/scala/akka/cluster/singleton/ClusterSingletonProxy.scala

@@ -264,7 +264,7 @@ final class ClusterSingletonProxy(singletonManagerPath: String, settings: Cluste
     case _: MemberEvent => // do nothing
 
     // singleton identification logic
-    case ActorIdentity(identifyId, Some(s)) =>
+    case ActorIdentity(_, Some(s)) =>
       // if the new singleton is defined, deliver all buffered messages
       log.info("Singleton identified at [{}]", s.path)
       singleton = Some(s)

akka-cluster-tools/src/main/scala/akka/cluster/singleton/protobuf/ClusterSingletonMessageSerializer.scala

@@ -10,7 +10,6 @@ import akka.cluster.singleton.ClusterSingletonManager.Internal.HandOverInProgres
 import akka.cluster.singleton.ClusterSingletonManager.Internal.HandOverToMe
 import akka.cluster.singleton.ClusterSingletonManager.Internal.TakeOverFromMe
 import akka.serialization.BaseSerializer
-import akka.serialization.SerializationExtension
 import akka.serialization.SerializerWithStringManifest
 import java.io.NotSerializableException
 
@@ -23,8 +22,6 @@ private[akka] class ClusterSingletonMessageSerializer(val system: ExtendedActorS
     extends SerializerWithStringManifest
     with BaseSerializer {
 
-  private lazy val serialization = SerializationExtension(system)
-
   private val HandOverToMeManifest = "A"
   private val HandOverInProgressManifest = "B"
   private val HandOverDoneManifest = "C"

akka-cluster-tools/src/multi-jvm/scala/akka/cluster/TestLeaseActor.scala

@@ -25,8 +25,8 @@ import akka.pattern.ask
 import akka.util.Timeout
 
 object TestLeaseActor {
-  def props(probe: ActorRef): Props =
+  def props(): Props =
-    Props(new TestLeaseActor(probe))
+    Props(new TestLeaseActor)
 
   sealed trait LeaseRequest
   final case class Acquire(owner: String) extends LeaseRequest
@@ -38,7 +38,7 @@ object TestLeaseActor {
   final case class ActionRequest(request: LeaseRequest, result: Any) // boolean of Failure
 }
 
-class TestLeaseActor(probe: ActorRef) extends Actor with ActorLogging {
+class TestLeaseActor extends Actor with ActorLogging {
   import TestLeaseActor._
 
   var requests: List[(ActorRef, LeaseRequest)] = Nil

akka-cluster-tools/src/multi-jvm/scala/akka/cluster/client/ClusterClientSpec.scala

@@ -28,6 +28,7 @@ import akka.testkit._
 import akka.cluster.pubsub._
 import akka.remote.transport.ThrottlerTransportAdapter.Direction
 import akka.util.Timeout
+import akka.util.unused
 
 import scala.concurrent.Await
 
@@ -64,7 +65,7 @@ object ClusterClientSpec extends MultiNodeConfig {
         context.system.terminate()
       case msg =>
         testActor.forward(msg)
-        sender() ! Reply(msg + "-ack", Cluster(context.system).selfAddress)
+        sender() ! Reply(s"$msg-ack", Cluster(context.system).selfAddress)
     }
   }
 
@@ -189,6 +190,19 @@ class ClusterClientSpec extends MultiNodeSpec(ClusterClientSpec) with STMultiNod
     node(r) / "system" / "receptionist"
   }
 
+  @unused
+  def docOnly = { //not used, only demo
+    //#initialContacts
+    val initialContacts = Set(
+      ActorPath.fromString("akka.tcp://OtherSys@host1:2552/system/receptionist"),
+      ActorPath.fromString("akka.tcp://OtherSys@host2:2552/system/receptionist"))
+    val settings = ClusterClientSettings(system).withInitialContacts(initialContacts)
+    //#initialContacts
+
+    // make the compiler happy and thinking we use it
+    settings.acceptableHeartbeatPause
+  }
+
   "A ClusterClient" must {
 
     "startup cluster" in within(30 seconds) {
@@ -278,15 +292,6 @@ class ClusterClientSpec extends MultiNodeSpec(ClusterClientSpec) with STMultiNod
         receiveN(3).toSet should ===(Set("hello", "hi"))
       }
 
-      lazy val docOnly = { //not used, only demo
-        //#initialContacts
-        val initialContacts = Set(
-          ActorPath.fromString("akka.tcp://OtherSys@host1:2552/system/receptionist"),
-          ActorPath.fromString("akka.tcp://OtherSys@host2:2552/system/receptionist"))
-        val settings = ClusterClientSettings(system).withInitialContacts(initialContacts)
-        //#initialContacts
-      }
-
       // strange, barriers fail without this sleep
       Thread.sleep(1000)
       enterBarrier("after-4")
@@ -436,7 +441,7 @@ class ClusterClientSpec extends MultiNodeSpec(ClusterClientSpec) with STMultiNod
         c ! ClusterClient.Send("/user/service2", "ping", localAffinity = true)
         // if we would use remote watch the failure detector would trigger and
         // connection quarantined
-        expectNoMsg(5 seconds)
+        expectNoMessage(5 seconds)
 
         testConductor.passThrough(client, receptionistRoleName, Direction.Both).await
 

akka-cluster-tools/src/multi-jvm/scala/akka/cluster/pubsub/DistributedPubSubMediatorSpec.scala

@@ -149,7 +149,7 @@ class DistributedPubSubMediatorSpec
   var chatUsers: Map[String, ActorRef] = Map.empty
 
   def createChatUser(name: String): ActorRef = {
-    var a = system.actorOf(Props(classOf[TestChatUser], mediator, testActor), name)
+    val a = system.actorOf(Props(classOf[TestChatUser], mediator, testActor), name)
     chatUsers += (name -> a)
     a
   }
@@ -292,7 +292,7 @@ class DistributedPubSubMediatorSpec
         lastSender.path.name should ===("u7")
       }
       runOn(third) {
-        expectNoMsg(2.seconds)
+        expectNoMessage(2.seconds)
       }
 
       enterBarrier("after-6")
@@ -331,7 +331,7 @@ class DistributedPubSubMediatorSpec
         lastSender.path.name should ===("u10")
       }
       runOn(third) {
-        expectNoMsg(2.seconds)
+        expectNoMessage(2.seconds)
       }
 
       enterBarrier("after-7")
@@ -407,7 +407,7 @@ class DistributedPubSubMediatorSpec
         lastSender.path.name should ===("u11")
       }
       runOn(third) {
-        expectNoMsg(2.seconds) // sender() node should not receive a message
+        expectNoMessage(2.seconds) // sender() node should not receive a message
       }
 
       enterBarrier("after-11")
@@ -437,7 +437,7 @@ class DistributedPubSubMediatorSpec
 
       runOn(first, second) {
         expectMsg("hi")
-        expectNoMsg(2.seconds) // each group receive only one message
+        expectNoMessage(2.seconds) // each group receive only one message
       }
       enterBarrier("12-published")
 

akka-cluster-tools/src/multi-jvm/scala/akka/cluster/pubsub/DistributedPubSubRestartSpec.scala

@@ -156,7 +156,7 @@ class DistributedPubSubRestartSpec
           probe.expectMsgType[SubscribeAck]
 
           // let them gossip, but Delta should not be exchanged
-          probe.expectNoMsg(5.seconds)
+          probe.expectNoMessage(5.seconds)
           newMediator.tell(Internal.DeltaCount, probe.ref)
           probe.expectMsg(0L)
 

akka-cluster-tools/src/multi-jvm/scala/akka/cluster/singleton/ClusterSingletonManagerDownedSpec.scala

@@ -20,6 +20,7 @@ import akka.testkit._
 import akka.util.ccompat._
 import com.typesafe.config.ConfigFactory
 
+@ccompatUsedUntil213
 object ClusterSingletonManagerDownedSpec extends MultiNodeConfig {
   val first = role("first")
   val second = role("second")

akka-cluster-tools/src/multi-jvm/scala/akka/cluster/singleton/ClusterSingletonManagerLeaseSpec.scala

@@ -10,11 +10,9 @@ import akka.cluster.TestLeaseActor._
 import akka.cluster.singleton.ClusterSingletonManagerLeaseSpec.ImportantSingleton.Response
 import akka.cluster._
 import akka.remote.testkit.{ MultiNodeConfig, MultiNodeSpec, STMultiNodeSpec }
-import akka.remote.transport.ThrottlerTransportAdapter.Direction
 import akka.testkit._
 import com.typesafe.config.ConfigFactory
 
-import scala.language.postfixOps
 import scala.concurrent.duration._
 
 object ClusterSingletonManagerLeaseSpec extends MultiNodeConfig {
@@ -115,7 +113,7 @@ class ClusterSingletonManagerLeaseSpec
 
     "start test lease" in {
       runOn(controller) {
-        system.actorOf(TestLeaseActor.props(leaseProbe.ref), s"lease-${system.name}")
+        system.actorOf(TestLeaseActor.props(), s"lease-${system.name}")
       }
       enterBarrier("lease-actor-started")
     }

akka-cluster-tools/src/multi-jvm/scala/akka/cluster/singleton/ClusterSingletonManagerSpec.scala

@@ -80,7 +80,7 @@ object ClusterSingletonManagerSpec extends MultiNodeConfig {
         sender() ! UnexpectedUnregistration
         context.stop(self)
       case Reset => sender() ! ResetOk
-      case msg   => // no consumer, drop
+      case _     => // no consumer, drop
     }
 
     def active(consumer: ActorRef): Receive = {
@@ -298,13 +298,13 @@ class ClusterSingletonManagerSpec
     runOn(controller) {
       queue ! msg
       // make sure it's not terminated, which would be wrong
-      expectNoMsg(1 second)
+      expectNoMessage(1 second)
     }
     runOn(oldest) {
       expectMsg(5.seconds, msg)
     }
     runOn(roles.filterNot(r => r == oldest || r == controller || r == observer): _*) {
-      expectNoMsg(1 second)
+      expectNoMessage(1 second)
     }
     enterBarrier("after-" + msg + "-verified")
   }
@@ -383,7 +383,6 @@ class ClusterSingletonManagerSpec
 
     "hand over when oldest leaves in 6 nodes cluster " in within(30 seconds) {
       val leaveRole = first
-      val newOldestRole = second
 
       runOn(leaveRole) {
         Cluster(system).leave(node(leaveRole).address)

akka-cluster-tools/src/multi-jvm/scala/akka/cluster/singleton/ClusterSingletonManagerStartupSpec.scala

@@ -35,7 +35,7 @@ object ClusterSingletonManagerStartupSpec extends MultiNodeConfig {
   /**
    * The singleton actor
    */
-  class Echo(testActor: ActorRef) extends Actor {
+  class Echo extends Actor {
     def receive = {
       case _ =>
         sender() ! self
@@ -65,7 +65,7 @@ class ClusterSingletonManagerStartupSpec
   def createSingleton(): ActorRef = {
     system.actorOf(
       ClusterSingletonManager.props(
-        singletonProps = Props(classOf[Echo], testActor),
+        singletonProps = Props(classOf[Echo]),
         terminationMessage = PoisonPill,
         settings = ClusterSingletonManagerSettings(system)),
       name = "echo")

akka-cluster-tools/src/test/scala/akka/cluster/pubsub/DistributedPubSubMediatorDeadLettersSpec.scala

@@ -25,7 +25,7 @@ trait DeadLettersProbe { this: TestKitBase =>
   val deadLettersProbe = TestProbe()
   system.eventStream.subscribe(deadLettersProbe.ref, classOf[DeadLetter])
 
-  def expectNoDeadLetters(): Unit = deadLettersProbe.expectNoMsg(100.milliseconds)
+  def expectNoDeadLetters(): Unit = deadLettersProbe.expectNoMessage(100.milliseconds)
   def expectDeadLetter(): Unit = deadLettersProbe.expectMsgClass(classOf[DeadLetter])
 }
 

akka-cluster-tools/src/test/scala/akka/cluster/singleton/ClusterSingletonLeavingSpeedSpec.scala

@@ -71,6 +71,8 @@ class ClusterSingletonLeavingSpeedSpec
 
   override def expectedTestDuration: FiniteDuration = 10.minutes
 
+  import akka.util.ccompat._
+  @ccompatUsedUntil213
   def join(from: ActorSystem, to: ActorSystem, probe: ActorRef): Unit = {
 
     from.actorOf(
@@ -82,7 +84,7 @@ class ClusterSingletonLeavingSpeedSpec
 
     Cluster(from).join(Cluster(to).selfAddress)
     within(15.seconds) {
-      import akka.util.ccompat._
+
       awaitAssert {
         Cluster(from).state.members.map(_.uniqueAddress) should contain(Cluster(from).selfUniqueAddress)
         Cluster(from).state.members.unsorted.map(_.status) should ===(Set(MemberStatus.Up))

akka-cluster-tools/src/test/scala/akka/cluster/singleton/ClusterSingletonProxySpec.scala

@@ -18,7 +18,7 @@ class ClusterSingletonProxySpec extends WordSpecLike with Matchers with BeforeAn
   val seed = new ActorSys()
 
   val testSystems = {
-    val joiners = (0 until 4).map(n => new ActorSys(joinTo = Some(seed.cluster.selfAddress)))
+    val joiners = (0 until 4).map(_ => new ActorSys(joinTo = Some(seed.cluster.selfAddress)))
     joiners :+ seed
   }
 

akka-cluster-tools/src/test/scala/akka/cluster/singleton/ClusterSingletonRestart2Spec.scala

@@ -5,7 +5,6 @@
 package akka.cluster.singleton
 
 import scala.concurrent.duration._
-
 import akka.actor.Actor
 import akka.actor.ActorSystem
 import akka.actor.PoisonPill
@@ -52,6 +51,8 @@ class ClusterSingletonRestart2Spec extends AkkaSpec("""
     ConfigFactory.parseString("akka.cluster.roles = [other]").withFallback(system.settings.config))
   var sys4: ActorSystem = null
 
+  import akka.util.ccompat._
+  @ccompatUsedUntil213
   def join(from: ActorSystem, to: ActorSystem): Unit = {
     if (Cluster(from).selfRoles.contains("singleton"))
       from.actorOf(
@@ -62,7 +63,6 @@ class ClusterSingletonRestart2Spec extends AkkaSpec("""
         name = "echo")
 
     within(45.seconds) {
-      import akka.util.ccompat._
       awaitAssert {
         Cluster(from).join(Cluster(to).selfAddress)
         Cluster(from).state.members.map(_.uniqueAddress) should contain(Cluster(from).selfUniqueAddress)

akka-cluster-tools/src/test/scala/akka/cluster/singleton/ClusterSingletonRestartSpec.scala

@@ -34,6 +34,8 @@ class ClusterSingletonRestartSpec extends AkkaSpec("""
   val sys2 = ActorSystem(system.name, system.settings.config)
   var sys3: ActorSystem = null
 
+  import akka.util.ccompat._
+  @ccompatUsedUntil213
   def join(from: ActorSystem, to: ActorSystem): Unit = {
     from.actorOf(
       ClusterSingletonManager.props(
@@ -43,7 +45,6 @@ class ClusterSingletonRestartSpec extends AkkaSpec("""
       name = "echo")
 
     within(10.seconds) {
-      import akka.util.ccompat._
       awaitAssert {
         Cluster(from).join(Cluster(to).selfAddress)
         Cluster(from).state.members.map(_.uniqueAddress) should contain(Cluster(from).selfUniqueAddress)

project/AkkaDisciplinePlugin.scala

@@ -5,7 +5,7 @@
 package akka
 
 import sbt._
-import Keys.{scalacOptions, _}
+import Keys.{ scalacOptions, _ }
 import sbt.plugins.JvmPlugin
 
 object AkkaDisciplinePlugin extends AutoPlugin with ScalafixSupport {
@@ -24,23 +24,15 @@ object AkkaDisciplinePlugin extends AutoPlugin with ScalafixSupport {
     "akka-coordination",
     "akka-protobuf",
     "akka-stream-typed",
-    "akka-cluster-typed"
+    "akka-cluster-typed",
-  )
+    "akka - cluster - tools")
 
-  val strictProjects = Set(
+  val strictProjects = Set("akka-discovery", "akka-protobuf", "akka-coordination")
-    "akka-discovery",
-    "akka-protobuf",
-    "akka-coordination"
-  )
 
-  lazy val scalaFixSettings = Seq(
+  lazy val scalaFixSettings = Seq(Compile / scalacOptions += "-Yrangepos")
-    Compile / scalacOptions += "-Yrangepos")
 
-  lazy val scoverageSettings = Seq(
+  lazy val scoverageSettings =
-    coverageMinimum := 70,
+    Seq(coverageMinimum := 70, coverageFailOnMinimum := false, coverageOutputHTML := true, coverageHighlighting := {
-    coverageFailOnMinimum := false,
-    coverageOutputHTML := true,
-    coverageHighlighting := {
       import sbt.librarymanagement.{ SemanticSelector, VersionNumber }
       !VersionNumber(scalaVersion.value).matchesSemVer(SemanticSelector("<=2.11.1"))
     })
@@ -49,9 +41,7 @@ object AkkaDisciplinePlugin extends AutoPlugin with ScalafixSupport {
   lazy val silencerSettings = Seq(
     libraryDependencies ++= Seq(
         compilerPlugin("com.github.ghik" %% "silencer-plugin" % silencerVersion),
-      "com.github.ghik" %% "silencer-lib" % silencerVersion % Provided,
+        "com.github.ghik" %% "silencer-lib" % silencerVersion % Provided))
-    )
-  )
 
   lazy val disciplineSettings =
     scalaFixSettings ++
@@ -71,16 +61,14 @@ object AkkaDisciplinePlugin extends AutoPlugin with ScalafixSupport {
               "-Ywarn-nullary-override",
               "-Ywarn-nullary-unit",
               "-Ypartial-unification",
-            "-Yno-adapted-args",
+              "-Yno-adapted-args")
-          )
           case Some((2, 12)) =>
             disciplineScalacOptions
           case Some((2, 11)) =>
             disciplineScalacOptions ++ Set("-language:existentials") -- Set(
               "-Ywarn-extra-implicit",
               "-Ywarn-unused:_",
-            "-Ypartial-unification",
+              "-Ypartial-unification")
-          )
           case _ =>
             Nil
         }).toSeq,
@@ -97,8 +85,7 @@ object AkkaDisciplinePlugin extends AutoPlugin with ScalafixSupport {
       // different compiler phases from the regular run), and in particular
       // '-Ywarn-unused:explicits' breaks 'sbt ++2.13.0-M5 akka-actor/doc'
       // https://github.com/akka/akka/issues/26119
-      Compile / doc / scalacOptions --= disciplineScalacOptions.toSeq :+ "-Xfatal-warnings",
+      Compile / doc / scalacOptions --= disciplineScalacOptions.toSeq :+ "-Xfatal-warnings")
-    )
 
   val testUndicipline = Seq(
     "-Ywarn-dead-code", // ??? used in compile only specs
@@ -108,11 +95,7 @@ object AkkaDisciplinePlugin extends AutoPlugin with ScalafixSupport {
   /**
    * Remain visibly filtered for future code quality work and removing.
    */
-  val undisciplineScalacOptions = Set(
+  val undisciplineScalacOptions = Set("-Ywarn-value-discard", "-Ywarn-numeric-widen", "-Yno-adapted-args")
-    "-Ywarn-value-discard",
-    "-Ywarn-numeric-widen",
-    "-Yno-adapted-args",
-  )
 
   /** These options are desired, but some are excluded for the time being*/
   val disciplineScalacOptions = Set(
@@ -131,7 +114,6 @@ object AkkaDisciplinePlugin extends AutoPlugin with ScalafixSupport {
     "-Ywarn-nullary-unit",
     "-Ywarn-unused:_",
     "-Ypartial-unification",
-    "-Ywarn-extra-implicit",
+    "-Ywarn-extra-implicit")
-  )
 
 }