IllegalStateException on shutdown after running itest/databindings/interop

After running itest/databindings/interop, the test completes OK but an IllegalStateException is thrown by the shutdown thread. Here's the stack trace:

Exception in thread "Thread-1" java.lang.IllegalStateException: Shutdown in prog
ress
at java.lang.ApplicationShutdownHooks.remove(ApplicationShutdownHooks.ja
va:55)
at java.lang.Runtime.removeShutdownHook(Runtime.java:220)
at org.apache.tuscany.sca.binding.ws.axis2.TuscanyListenerManager.stop(T
uscanyListenerManager.java:87)
at org.apache.tuscany.sca.binding.ws.axis2.TuscanyListenerManager$Listen
erManagerShutdownThread.run(TuscanyListenerManager.java:100)
Exception in thread "Thread-5" java.lang.IllegalStateException: Shutdown in prog
ress
at java.lang.ApplicationShutdownHooks.remove(ApplicationShutdownHooks.ja
va:55)
at java.lang.Runtime.removeShutdownHook(Runtime.java:220)
at org.apache.tuscany.sca.binding.ws.axis2.TuscanyListenerManager.stop(T
uscanyListenerManager.java:87)
at org.apache.tuscany.sca.binding.ws.axis2.TuscanyListenerManager$Listen
erManagerShutdownThread.run(TuscanyListenerManager.java:100)
java.lang.IllegalStateException: Shutdown in progress
at java.lang.ApplicationShutdownHooks.remove(ApplicationShutdownHooks.ja
va:55)
at java.lang.Runtime.removeShutdownHook(Runtime.java:220)
at org.apache.tuscany.sca.binding.ws.axis2.TuscanyListenerManager.stop(T
uscanyListenerManager.java:87)
at org.apache.axis2.context.ConfigurationContext.terminate(Configuration
Context.java:744)
at org.apache.axis2.transport.http.AxisServlet.destroy(AxisServlet.java:
465)
at org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceServlet.destroy(A
xis2ServiceServlet.java:295)
at org.mortbay.jetty.servlet.ServletHolder.destroyInstance(ServletHolder
.java:315)
at org.mortbay.jetty.servlet.ServletHolder.doStop(ServletHolder.java:286
)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.servlet.ServletHandler.doStop(ServletHandler.java:1
70)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.handler.HandlerWrapper.doStop(HandlerWrapper.java:1
29)
at org.mortbay.jetty.servlet.SessionHandler.doStop(SessionHandler.java:1
24)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.handler.HandlerWrapper.doStop(HandlerWrapper.java:1
29)
at org.mortbay.jetty.handler.ContextHandler.doStop(ContextHandler.java:5
66)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.handler.HandlerWrapper.doStop(HandlerWrapper.java:1
29)
at org.mortbay.jetty.Server.doStop(Server.java:281)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.Server$ShutdownHookThread.run(Server.java:559)
java.lang.IllegalStateException: Shutdown in progress
at java.lang.ApplicationShutdownHooks.remove(ApplicationShutdownHooks.ja
va:55)
at java.lang.Runtime.removeShutdownHook(Runtime.java:220)
at org.apache.tuscany.sca.binding.ws.axis2.TuscanyListenerManager.stop(T
uscanyListenerManager.java:87)
at org.apache.axis2.context.ConfigurationContext.terminate(Configuration
Context.java:744)
at org.apache.axis2.transport.http.AxisServlet.destroy(AxisServlet.java:
465)
at org.apache.tuscany.sca.binding.ws.axis2.Axis2ServiceServlet.destroy(A
xis2ServiceServlet.java:295)
at org.mortbay.jetty.servlet.ServletHolder.destroyInstance(ServletHolder
.java:315)
at org.mortbay.jetty.servlet.ServletHolder.doStop(ServletHolder.java:286
)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.servlet.ServletHandler.doStop(ServletHandler.java:1
70)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.handler.HandlerWrapper.doStop(HandlerWrapper.java:1
29)
at org.mortbay.jetty.servlet.SessionHandler.doStop(SessionHandler.java:1
24)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.handler.HandlerWrapper.doStop(HandlerWrapper.java:1
29)
at org.mortbay.jetty.handler.ContextHandler.doStop(ContextHandler.java:5
66)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.handler.HandlerWrapper.doStop(HandlerWrapper.java:1
29)
at org.mortbay.jetty.Server.doStop(Server.java:281)
at org.mortbay.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:6
5)
at org.mortbay.jetty.Server$ShutdownHookThread.run(Server.java:559)