13:08:42,248 INFO  [org.wildfly.clustering.server] (DistributedSingletonService - 1) WFLYCLSV0003: node1 elected as the singleton provider of the jboss.deployment.unit."clusterbench-ee7-singleton-jbossall.ear".installer service
13:08:42,474 INFO  [org.wildfly.clustering.server] (DistributedSingletonService - 1) WFLYCLSV0001: This node will now operate as the singleton provider of the jboss.deployment.unit."clusterbench-ee7-singleton-jbossall.ear".installer service
13:08:42,476 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC000001: Failed to start service jboss.deployment.unit."clusterbench-ee7-singleton-jbossall.ear".STRUCTURE: org.jboss.msc.service.StartException in service jboss.deployment.unit."clusterbench-ee7-singleton-jbossall.ear".STRUCTURE: WFLYSRV0153: Failed to process phase STRUCTURE of deployment "clusterbench-ee7-singleton-jbossall.ear"
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:172)
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: Root element supplier for {http://www.jboss.com/xml/ns/javaee}jboss-app already registered
        at org.jboss.staxmapper.XMLMapperImpl.registerRootElement(XMLMapperImpl.java:51)
        at org.jboss.staxmapper.XMLMapperImpl.registerRootElement(XMLMapperImpl.java:46)
        at org.jboss.as.server.deployment.jbossallxml.JBossAllXMLParsingProcessor.deploy(JBossAllXMLParsingProcessor.java:90)
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:165)
        ... 5 more