ConcurrentModificationException at AuthenticationForwardingSFSLTestCase

[INFO] Running org.wildfly.test.manual.elytron.seccontext.AuthenticationForwardingSFSLTestCase
^[[5~[ERROR] Tests run: 14, Failures: 0, Errors: 1, Skipped: 1, Time elapsed: 26.76 s <<< FAILURE! - in org.wildfly.test.manual.elytron.seccontext.AuthenticationForwardingSFSLTestCase
[ERROR] testServer2ExceptionFromForwardedAuthn(org.wildfly.test.manual.elytron.seccontext.AuthenticationForwardingSFSLTestCase) Time elapsed: 0.669 s <<< ERROR!
java.util.ConcurrentModificationException
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:592)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:528)
at org.jboss.ejb.protocol.remote.RemotingEJBClientInterceptor.handleInvocationResult(RemotingEJBClientInterceptor.java:56)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:594)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:528)
at org.jboss.ejb.client.TransactionPostDiscoveryInterceptor.handleInvocationResult(TransactionPostDiscoveryInterceptor.java:133)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:594)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:528)
at org.jboss.ejb.client.DiscoveryEJBClientInterceptor.handleInvocationResult(DiscoveryEJBClientInterceptor.java:114)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:594)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:528)
at org.jboss.ejb.client.NamingEJBClientInterceptor.handleInvocationResult(NamingEJBClientInterceptor.java:78)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:594)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:528)
at org.jboss.ejb.client.TransactionInterceptor.handleInvocationResult(TransactionInterceptor.java:172)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:594)
at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:528)
at org.jboss.ejb.client.EJBClientInvocationContext.awaitResponse(EJBClientInvocationContext.java:938)
at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:177)
at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:112)
at com.sun.proxy.$Proxy31.whoAmIAndServer2Exception(Unknown Source)
at org.wildfly.test.manual.elytron.seccontext.AbstractSecurityContextPropagationTestBase.lambda$getWhoAmIAndServer2ExceptionCallable$2(AbstractSecurityContextPropagationTestBase.java:492)
at org.wildfly.common.context.Contextual.runCallable(Contextual.java:127)
at org.wildfly.test.manual.elytron.seccontext.AbstractAuthenticationForwardingTestCase.testServer2ExceptionFromForwardedAuthn(AbstractAuthenticationForwardingTestCase.java:359)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.jboss.arquillian.junit.Arquillian$8$1.invoke(Arquillian.java:379)
at org.jboss.arquillian.container.test.impl.execution.LocalTestExecuter.execute(LocalTestExecuter.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:103)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:85)
at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:143)
at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:114)
at org.jboss.arquillian.core.impl.EventImpl.fire(EventImpl.java:67)
at org.jboss.arquillian.container.test.impl.execution.ClientTestExecuter.execute(ClientTestExecuter.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:103)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:85)
at org.jboss.arquillian.container.test.impl.client.ContainerEventController.createContext(ContainerEventController.java:142)
at org.jboss.arquillian.container.test.impl.client.ContainerEventController.createTestContext(ContainerEventController.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:92)
at org.jboss.arquillian.test.impl.TestContextHandler.createTestContext(TestContextHandler.java:130)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:92)
at org.jboss.arquillian.test.impl.TestContextHandler.createClassContext(TestContextHandler.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:92)
at org.jboss.arquillian.test.impl.TestContextHandler.createSuiteContext(TestContextHandler.java:73)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:92)
at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:143)
at org.jboss.arquillian.test.impl.EventTestRunnerAdaptor.test(EventTestRunnerAdaptor.java:136)
at org.jboss.arquillian.junit.Arquillian$8.evaluate(Arquillian.java:372)
at org.jboss.arquillian.junit.Arquillian$4.evaluate(Arquillian.java:246)
at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:431)
at org.jboss.arquillian.junit.Arquillian.access$200(Arquillian.java:55)
at org.jboss.arquillian.junit.Arquillian$5.evaluate(Arquillian.java:260)
at org.jboss.arquillian.junit.Arquillian$7$1.invoke(Arquillian.java:324)
at org.jboss.arquillian.container.test.impl.execution.ClientBeforeAfterLifecycleEventExecuter.execute(ClientBeforeAfterLifecycleEventExecuter.java:99)
at org.jboss.arquillian.container.test.impl.execution.ClientBeforeAfterLifecycleEventExecuter.on(ClientBeforeAfterLifecycleEventExecuter.java:72)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:103)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:85)
at org.jboss.arquillian.container.test.impl.client.ContainerEventController.createContext(ContainerEventController.java:142)
at org.jboss.arquillian.container.test.impl.client.ContainerEventController.createBeforeContext(ContainerEventController.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:92)
at org.jboss.arquillian.test.impl.TestContextHandler.createTestContext(TestContextHandler.java:130)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:92)
at org.jboss.arquillian.test.impl.TestContextHandler.createClassContext(TestContextHandler.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:92)
at org.jboss.arquillian.test.impl.TestContextHandler.createSuiteContext(TestContextHandler.java:73)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:96)
at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:92)
at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:143)
at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:114)
at org.jboss.arquillian.test.impl.EventTestRunnerAdaptor.fireCustomLifecycle(EventTestRunnerAdaptor.java:159)
at org.jboss.arquillian.junit.Arquillian$7.evaluate(Arquillian.java:317)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.jboss.arquillian.junit.Arquillian$2.evaluate(Arquillian.java:205)
at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:431)
at org.jboss.arquillian.junit.Arquillian.access$200(Arquillian.java:55)
at org.jboss.arquillian.junit.Arquillian$3.evaluate(Arquillian.java:219)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.jboss.arquillian.junit.Arquillian.run(Arquillian.java:167)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.apache.maven.surefire.junitcore.JUnitCore.run(JUnitCore.java:55)
at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:137)
at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeEager(JUnitCoreWrapper.java:107)
at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:83)
at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:75)
at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:158)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:383)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:344)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:125)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:417)