After Hudson 1.284 executes a couple of builds (on a slave node?), it starts
streaming 25-30 NullPointerExceptions that look like:

Feb 18, 2009 3:24:58 PM hudson.remoting.Channel$ReaderThread run
SEVERE: Failed to execute command Pipe.EOF(0)
java.lang.NullPointerException
at hudson.remoting.ProxyOutputStream$EOF.execute(ProxyOutputStream.java:229)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:670)
Feb 18, 2009 3:24:58 PM hudson.remoting.Channel$ReaderThread run
SEVERE: This command is created here
Command Pipe.EOF(0) created at
at hudson.remoting.Command.<init>(Command.java:24)
at hudson.remoting.ProxyOutputStream$EOF.<init>(ProxyOutputStream.java:169)
at hudson.remoting.ProxyOutputStream.doClose(ProxyOutputStream.java:104)
at hudson.remoting.ProxyOutputStream.close(ProxyOutputStream.java:100)
at hudson.remoting.RemoteOutputStream.close(RemoteOutputStream.java:93)
at hudson.FilePath$23.invoke(FilePath.java:874)
at hudson.FilePath$23.invoke(FilePath.java:869)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:1278)
at hudson.remoting.UserRequest.perform(UserRequest.java:69)
at hudson.remoting.UserRequest.perform(UserRequest.java:23)
at hudson.remoting.Request$2.run(Request.java:213)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)

I'm not sure what, if any, effect this has on Hudson or build results besides
spamming the server log (although my Hudson server currently only lives about 2
hours anyway due to issue 3076.) Both master and slaves are RHEL5 machines.