Executing a Maven build with goal integration-test site site:deploy.

Everything goes as planned, and the website is published. At this point the email-ext plugin would typically fire. But here is the output:

An attempt to send an e-mail to empty list of recipients, ignored.
ERROR: Failed to parse POMs
hudson.remoting.ChannelClosedException: channel is already closed
at hudson.remoting.Channel.send(Channel.java:524)
at hudson.remoting.Request.call(Request.java:129)
at hudson.remoting.Channel.call(Channel.java:722)
at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:167)
at com.sun.proxy.$Proxy55.isAlive(Unknown Source)
at hudson.Launcher$RemoteLauncher$ProcImpl.isAlive(Launcher.java:930)
at hudson.maven.ProcessCache$MavenProcess.call(ProcessCache.java:165)
at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.doRun(MavenModuleSetBuild.java:833)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:565)
at hudson.model.Run.execute(Run.java:1670)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:519)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:231)
Caused by: hudson.remoting.DiagnosedStreamCorruptionException

At this point there is a lot of debug output from Jenkins of various buffers, etc. Unfortunately tons of proprietary info in those buffers so I'm not going to post here, though I could probably answer specific questions if it's essential.

The first set of messages are:

Read back: 'A'
Read ahead: '[[Ljava.lang.Object;@28170a64]]>' 0x0d 0x0a

Later after a few pages of debug output, we see more of the stack, which seems fairly interesting..

at hudson.remoting.FlightRecorderInputStream.analyzeCrash(FlightRecorderInputStream.java:71)
at hudson.remoting.ClassicCommandTransport.diagnoseStreamCorruption(ClassicCommandTransport.java:94)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:78)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
Caused by: java.io.StreamCorruptedException: invalid type code: 41
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:71)
... 1 more