package goal does not work , com.thoughtworks.xstream.converters.enums.EnumMapConverter issue

compile goal works fine, as long as I skip the tests...
package fails dismally, suspect it is the xstream version suggested by the quickstart archetype. Here is the stacktrace:

[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Could not instatiate converter : com.thoughtworks.xstream.converters.enums.EnumMapConverter : null
Could not access java.util.EnumMap.keyType field
[INFO] ------------------------------------------------------------------------
[INFO] Trace
com.thoughtworks.xstream.XStream$InitializationException: Could not instatiate converter : com.thoughtworks.xstream.converters.enums.EnumMapConverter : null
at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:668)
at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:640)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:375)
at com.thoughtworks.xstream.XStream.<init>(XStream.java:301)
at org.apache.maven.plugin.war.util.WebappStructureSerializer.<init>(WebappStructureSerializer.java:25)
at org.apache.maven.plugin.war.AbstractWarMojo.<init>(AbstractWarMojo.java:237)
at org.apache.maven.plugin.war.WarMojo.<init>(WarMojo.java:44)
at java.lang.Class.newInstance(libgcj.so.9)
at org.codehaus.plexus.component.factory.java.JavaComponentFactory.newInstance(JavaComponentFactory.java:44)
at org.codehaus.plexus.DefaultPlexusContainer.createComponentInstance(DefaultPlexusContainer.java:1464)
at org.codehaus.plexus.component.manager.AbstractComponentManager.createComponentInstance(AbstractComponentManager.java:93)
at org.codehaus.plexus.component.manager.PerLookupComponentManager.getComponent(PerLookupComponentManager.java:48)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:331)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:440)
at org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(DefaultPluginManager.java:609)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:429)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
at java.lang.reflect.Method.invoke(libgcj.so.9)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(libgcj.so.9)
at com.thoughtworks.xstream.XStream.dynamicallyRegisterConverter(XStream.java:661)
...29 more
Caused by: java.lang.RuntimeException: Could not access java.util.EnumMap.keyType field
at com.thoughtworks.xstream.core.util.Fields.find(Fields.java:18)
at com.thoughtworks.xstream.converters.enums.EnumMapConverter.<init>(EnumMapConverter.java:29)
at java.lang.reflect.Constructor.newInstance(libgcj.so.9)
...30 more