JAXBIntroTestCase failures in JBossWS TS

During EAP 6.0.0 CR1 I noticed unexpected failure, but when I run this test manually (-Dtest=...) it passes. I tried it locally and on test machines with the same JDK which was used in test. This failure is present on all test machines.

I think this test must be affected by other tests which were executed before it.

org.jboss.test.ws.jaxws.cxf.jaxbintros.JAXBIntroTestCase.testEndpoint
http://hudson.qa.jboss.com/hudson/view/EAP6/view/EAP6-WS/job/eap-60-jbossws-testsuite-rhel/25/testReport/
http://hudson.qa.jboss.com/hudson/view/EAP6/view/EAP6-WS/job/eap-60-jbossws-testsuite-solaris/23/testReport/

Log can be found for example on http://hudson.qa.jboss.com/hudson/view/EAP6/view/EAP6-WS/job/eap-60-jbossws-testsuite-rhel/25/jdk=java17_default,label=RHEL6_x86_64/consoleText

Error Message
org.apache.cxf.configuration.NullConfigurer cannot be cast to org.jboss.wsf.stack.cxf.client.configuration.JBossWSConfigurer

Stacktrace
java.lang.ClassCastException: org.apache.cxf.configuration.NullConfigurer cannot be cast to org.jboss.wsf.stack.cxf.client.configuration.JBossWSConfigurer
at org.jboss.test.ws.jaxws.cxf.jaxbintros.Helper.setBindingCustomizationOnClientSide(Helper.java:128)
at org.jboss.test.ws.jaxws.cxf.jaxbintros.Helper.testEndpoint(Helper.java:63)
at org.jboss.test.ws.jaxws.cxf.jaxbintros.JAXBIntroTestCase.testEndpoint(JAXBIntroTestCase.java:91)