I'm seeing a strange failure in the JBossWS-CXF WSTrustTestCase; the client is submitting a POST request and gets an error while writing the body to the server:

[...]
Caused by: com.ctc.wstx.exc.WstxIOException: Error writing request body to server
at com.ctc.wstx.sw.BaseNsStreamWriter.doWriteAttr(BaseNsStreamWriter.java:519)
at com.ctc.wstx.sw.BaseNsStreamWriter.writeAttribute(BaseNsStreamWriter.java:228)
at org.apache.cxf.staxutils.StaxUtils.writeStartElement(StaxUtils.java:776)
at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:668)
at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:656)
at org.apache.cxf.binding.soap.saaj.SAAJOutInterceptor$SAAJOutEndingInterceptor.handleMessage(SAAJOutInterceptor.java:212)
at org.apache.cxf.binding.soap.saaj.SAAJOutInterceptor$SAAJOutEndingInterceptor.handleMessage(SAAJOutInterceptor.java:172)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:271)
at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:530)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:463)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:366)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:319)
at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:96)
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:133)
... 28 more
Caused by: java.io.IOException: Error writing request body to server
at sun.net.www.protocol.http.HttpURLConnection$StreamingOutputStream.checkError(HttpURLConnection.java:3191)
at sun.net.www.protocol.http.HttpURLConnection$StreamingOutputStream.write(HttpURLConnection.java:3174)
at org.apache.cxf.io.AbstractWrappedOutputStream.write(AbstractWrappedOutputStream.java:51)
at org.apache.cxf.io.AbstractThresholdOutputStream.write(AbstractThresholdOutputStream.java:69)
at com.ctc.wstx.io.UTF8Writer.write(UTF8Writer.java:143)
at com.ctc.wstx.sw.BufferingXmlWriter.flushBuffer(BufferingXmlWriter.java:1366)
at com.ctc.wstx.sw.BufferingXmlWriter.fastWriteRaw(BufferingXmlWriter.java:1412)
at com.ctc.wstx.sw.BufferingXmlWriter.writeAttribute(BufferingXmlWriter.java:865)
at com.ctc.wstx.sw.BaseNsStreamWriter.doWriteAttr(BaseNsStreamWriter.java:516)
... 41 more

I tried capturing the message exchange using WireShark and noticed and empty POST request as last message. I'm attaching the dump files.