Arquillian tests in Kitchensink Backbone quickstart fail

Tests run: 3, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 11.847 sec <<< FAILURE!
testRegister(org.jboss.as.quickstarts.kitchensink.test.MemberRegistrationTest)  Time elapsed: 0.057 sec  <<< FAILURE!
java.lang.AssertionError: Unexpected response status expected:<200> but was:<409>
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.failNotEquals(Assert.java:743)
	at org.junit.Assert.assertEquals(Assert.java:118)
	at org.junit.Assert.assertEquals(Assert.java:555)
	at org.jboss.as.quickstarts.kitchensink.test.MemberRegistrationTest.testRegister(MemberRegistrationTest.java:75)