PreparedResponseTestCase from wf-core-eap fails intermittently

java.lang.AssertionError: null
	at org.junit.Assert.fail(Assert.java:86)
	at org.junit.Assert.assertTrue(Assert.java:41)
	at org.junit.Assert.assertTrue(Assert.java:52)
	at org.wildfly.core.test.standalone.mgmt.PreparedResponseTestCase.reloadServer(PreparedResponseTestCase.java:113)

&amp#27;[0m01:34:22,658 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-4) WFLYSRV0028: Stopped deployment slow-stop.jar (runtime-name: slow-stop.jar) in 3025ms
&amp#27;[0m&amp#27;[0m01:34:22,701 INFO  [org.jboss.as] (MSC service thread 1-2) WFLYSRV0050: WildFly Core 3.0.0.Alpha4-redhat-1 "Kenny" stopped in 3071ms
&amp#27;[0m&amp#27;[0m01:34:22,710 INFO  [org.jboss.as] (MSC service thread 1-5) WFLYSRV0049: WildFly Core 3.0.0.Alpha4-redhat-1 "Kenny" starting
&amp#27;[0m&amp#27;[0m01:34:23,243 INFO  [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0039: Creating http management service using socket-binding (management-http)
&amp#27;[0m&amp#27;[0m01:34:23,331 INFO  [org.jboss.as.patching] (MSC service thread 1-4) WFLYPAT0050: WildFly cumulative patch ID is: base, one-off patches include: none
&amp#27;[0m&amp#27;[33m01:34:23,361 WARN  [org.jboss.as.domain.management.security] (MSC service thread 1-3) WFLYDM0111: Keystore /mnt/hudson_workspace/workspace/eap-7x-as-testsuite-test-core-rhel/19de6045/testsuite/manualmode/target/wildfly-core/standalone/configuration/application.keystore not found, it will be auto generated on first use with a self signed certificate for host localhost
&amp#27;[0m&amp#27;[33m01:34:23,355 WARN  [org.jboss.as.domain.http.api.undertow] (MSC service thread 1-1) WFLYDMHTTP0003: Unable to load console module for slot main, disabling console
&amp#27;[0m&amp#27;[0m01:34:23,367 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-7) WFLYSRV0027: Starting deployment of "slow-stop.jar" (runtime-name: "slow-stop.jar")
&amp#27;[0m&amp#27;[33m01:34:23,449 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-1) WFLYSRV0018: Deployment "deployment.slow-stop.jar" is using a private module ("org.jboss.as.controller:main") which may be changed or removed in future versions without notice.
&amp#27;[0m&amp#27;[33m01:34:23,450 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-1) WFLYSRV0018: Deployment "deployment.slow-stop.jar" is using a private module ("org.jboss.as.server:main") which may be changed or removed in future versions without notice.
&amp#27;[0m&amp#27;[33m01:34:23,452 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-1) WFLYSRV0018: Deployment "deployment.slow-stop.jar" is using a private module ("org.wildfly.extension.request-controller:main") which may be changed or removed in future versions without notice.
&amp#27;[0m&amp#27;[33m01:34:23,453 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-1) WFLYSRV0018: Deployment "deployment.slow-stop.jar" is using a private module ("org.jboss.as.network:main") which may be changed or removed in future versions without notice.
&amp#27;[0m&amp#27;[0m01:34:23,479 INFO  [org.wildfly.test.shutdown.SlowStopService] (MSC service thread 1-7) Started with a stop duration of 3000 ms
&amp#27;[0m&amp#27;[0m01:34:23,528 INFO  [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0010: Deployed "slow-stop.jar" (runtime-name : "slow-stop.jar")
&amp#27;[0m

java.lang.RuntimeException: java.io.IOException: java.util.concurrent.CancellationException: Operation was cancelled
	at org.jboss.threads.AsyncFutureTask.operationCancelled(AsyncFutureTask.java:70)
	at org.jboss.threads.AsyncFutureTask.get(AsyncFutureTask.java:267)
	at org.jboss.as.controller.client.impl.AbstractDelegatingAsyncFuture.get(AbstractDelegatingAsyncFuture.java:57)
	at org.jboss.as.controller.client.impl.AbstractModelControllerClient.executeForResult(AbstractModelControllerClient.java:147)
	at org.jboss.as.controller.client.impl.AbstractModelControllerClient.execute(AbstractModelControllerClient.java:75)
	at org.wildfly.core.testrunner.ManagementClient.executeForResult(ManagementClient.java:234)
	at org.wildfly.core.test.standalone.mgmt.PreparedResponseTestCase.reloadServer(PreparedResponseTestCase.java:102)

11:03:28,015 WARN  [org.jboss.as.protocol.connection] (Remoting "management-client" task-5) WFLYPRT0018: No such request (1) associated with channel Channel ID a37ddd63 (outbound) of Remoting connection 68823cff to /10.16.180.146:9990 of endpoint "management-client" <6645cf9f>