diff --git a/.travis.yml b/.travis.yml
index 7a8dc348f2..97f7bffad9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -38,7 +38,7 @@ jobs:
     - stage: scala3
       name: scala3
       # separate job since only a few modules compile with Scala 3 yet
-      script: jabba install adopt@1.11-0 && jabba use adopt@1.11-0 && sbt -Dakka.build.scalaVersion=3.0 "akka-actor-tests/test:compile" akka-actor-testkit-typed/compile akka-actor-typed/compile akka-discovery/compile akka-pki/test:compile akka-protobuf/test:compile akka-protobuf-v3/test:compile akka-slf4j/test:compile akka-stream/compile akka-stream-tests-tck/test akka-coordination/test akka-serialization-jackson/test:compile akka-testkit/test akka-stream-testkit/test
+      script: jabba install adopt@1.11-0 && jabba use adopt@1.11-0 && sbt -Dakka.build.scalaVersion=3.0 "akka-actor-tests/test:compile" akka-actor-testkit-typed/compile akka-actor-typed/compile akka-discovery/test akka-pki/test:compile akka-protobuf/test:compile akka-protobuf-v3/test:compile akka-slf4j/test:compile akka-stream/compile akka-stream-tests-tck/test akka-coordination/test akka-serialization-jackson/test:compile akka-testkit/test akka-stream-testkit/test
 
 stages:
   - name: whitesource
diff --git a/akka-actor-tests/src/test/scala/akka/io/dns/DockerBindDnsService.scala b/akka-actor-tests/src/test/scala/akka/io/dns/DockerBindDnsService.scala
index 6e333b1fcf..924cbb4e1a 100644
--- a/akka-actor-tests/src/test/scala/akka/io/dns/DockerBindDnsService.scala
+++ b/akka-actor-tests/src/test/scala/akka/io/dns/DockerBindDnsService.scala
@@ -72,7 +72,8 @@ abstract class DockerBindDnsService(config: Config) extends AkkaSpec(config) wit
       })
 
     val creation = client.createContainer(containerConfig, containerName)
-    creation.warnings() should be(null).or(have(size(0)))
+    if (creation.warnings() != null)
+      creation.warnings() should have(size(0))
     id = Some(creation.id())
 
     client.startContainer(creation.id())