SEVERE: Unexpected error in channel Slave (i-53fd0603)
java.lang.OutOfMemoryError: Java heap space
Apr 25, 2014 6:38:17 PM hudson.plugins.disk_usage.DiskUsageUtil calculateWorkspaceDiskUsageForPath
WARNING: Disk usage fails to calculate workspace for file path /home/ubuntu/workspace/executor_0 through channel hudson.remoting.Channel@744a518e:Slave (i-53fd0603)
java.util.concurrent.ExecutionException: hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected reader termination
	at hudson.remoting.Request$1.get(Request.java:278)
	at hudson.remoting.Request$1.get(Request.java:210)
	at hudson.remoting.FutureAdapter.get(FutureAdapter.java:59)
	at hudson.plugins.disk_usage.DiskUsageUtil.calculateWorkspaceDiskUsageForPath(DiskUsageUtil.java:294)
	at hudson.plugins.disk_usage.DiskUsageUtil.calculateWorkspaceDiskUsage(DiskUsageUtil.java:349)
	at hudson.plugins.disk_usage.WorkspaceDiskUsageCalculationThread.execute(WorkspaceDiskUsageCalculationThread.java:51)
	at hudson.model.AsyncAperiodicWork$1.run(AsyncAperiodicWork.java:76)
	at java.lang.Thread.run(Thread.java:701)
Caused by: hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected reader termination
	at hudson.remoting.Request.abort(Request.java:299)
	at hudson.remoting.Channel.terminate(Channel.java:801)
	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:76)
Caused by: java.io.IOException: Unexpected reader termination
	... 1 more
Caused by: java.lang.OutOfMemoryError: Java heap space
Exception in thread "Channel reader thread: Slave (i-53fd0603)" java.lang.OutOfMemoryError: Java heap space