Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/modules/ModuleClassLoader) previously initiated loading for a different type with name "org/jboss/shrinkwrap/descriptor/api/webapp30/WebAppDescriptor"
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
	at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:344)
	at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:422)
	at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:260)
	at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:75)
	at org.jboss.modules.Module.loadModuleClass(Module.java:528)
	at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:188)
	at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:444)
	at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:432)
	at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:399)
	at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:374)
	at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:119)
	at test.org.jboss.forge.javaee.servlet.ServletFacetTest.testWebXMLCreatedWhenInstalled(ServletFacetTest.java:63)
	... 88 more