FATAL: command execution failed.
hudson.util.IOException2: Failed to join the process
	at hudson.Proc$RemoteProc.join(Proc.java:312)
	at hudson.Launcher$ProcStarter.join(Launcher.java:275)
	at hudson.tasks.Ant.perform(Ant.java:212)
	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
	at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:582)
	at hudson.model.Build$RunnerImpl.build(Build.java:165)
	at hudson.model.Build$RunnerImpl.doRun(Build.java:132)
	at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:416)
	at hudson.model.Run.run(Run.java:1244)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
	at hudson.model.ResourceController.execute(ResourceController.java:88)
	at hudson.model.Executor.run(Executor.java:122)
Caused by: java.util.concurrent.ExecutionException: hudson.remoting.RequestAbortedException: java.io.EOFException
	at hudson.remoting.Request$1.get(Request.java:218)
	at hudson.remoting.Request$1.get(Request.java:172)
	at hudson.remoting.FutureAdapter.get(FutureAdapter.java:55)
	at hudson.Proc$RemoteProc.join(Proc.java:304)
	... 11 more
Caused by: hudson.remoting.RequestAbortedException: java.io.EOFException
	at hudson.remoting.Request.abort(Request.java:257)
	at hudson.remoting.Channel.terminate(Channel.java:598)
	at hudson.remoting.Channel$ReaderThread.run(Channel.java:876)
Caused by: java.io.EOFException
	at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2554)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1297)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
	at hudson.remoting.Channel$ReaderThread.run(Channel.java:856)
FATAL: channel is already closed
hudson.remoting.ChannelClosedException: channel is already closed
	at hudson.remoting.Channel.send(Channel.java:412)
	at hudson.remoting.Request.call(Request.java:105)
	at hudson.remoting.Channel.call(Channel.java:551)
	at hudson.Launcher$RemoteLauncher.kill(Launcher.java:735)
	at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:421)
	at hudson.model.Run.run(Run.java:1244)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
	at hudson.model.ResourceController.execute(ResourceController.java:88)
	at hudson.model.Executor.run(Executor.java:122)