UT005013 at the end of an Arquillian test

I'm using an Alpha 2 snapshot of WildFly. When an Arquillian test ends I'm getting the following stacktrace:
...
20:07:12,101 INFO [org.jboss.as.server] JBAS018558: Undeployed "shop2.war" (runtime-name: "shop2.war")
20:07:12,131 ERROR [io.undertow.request.io] UT005013: An IOException occurred: java.io.IOException: Eine vorhandene Verbindung wurde vom Remotehost geschlossen
at sun.nio.ch.SocketDispatcher.read0(Native Method) [rt.jar:1.7.0_21]
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43) [rt.jar:1.7.0_21]
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:225) [rt.jar:1.7.0_21]
at sun.nio.ch.IOUtil.read(IOUtil.java:193) [rt.jar:1.7.0_21]
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:359) [rt.jar:1.7.0_21]
at org.xnio.nio.NioSocketConduit.read(NioSocketConduit.java:262) [xnio-nio-3.1.0.CR3.jar:3.1.0.CR3]
at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127) [xnio-api-3.1.0.CR3.jar:3.1.0.CR3]
at io.undertow.server.HttpReadListener.handleEvent(HttpReadListener.java:83)
at io.undertow.server.HttpReadListener.handleEvent(HttpReadListener.java:43)
at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:91) [xnio-api-3.1.0.CR3.jar:3.1.0.CR3]
at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:61) [xnio-api-3.1.0.CR3.jar:3.1.0.CR3]
at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:85) [xnio-nio-3.1.0.CR3.jar:3.1.0.CR3]
at org.xnio.nio.WorkerThread.run(WorkerThread.java:528) [xnio-nio-3.1.0.CR3.jar:3.1.0.CR3]