Build failed in Jenkins: JSPWiki #162

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See <https://builds.apache.org/job/JSPWiki/162/>

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Started by an SCM change
Building remotely on ubuntu3 in workspace 
<https://builds.apache.org/job/JSPWiki/ws/>
Updating http://svn.apache.org/repos/asf/incubator/jspwiki/trunk at revision 
'2013-07-18T21:13:34.373 +0000'
FATAL: null
java.lang.NullPointerException
        at 
hudson.scm.subversion.UpdateUpdater$TaskImpl.perform(UpdateUpdater.java:199)
        at 
hudson.scm.subversion.WorkspaceUpdater$UpdateTask.delegateTo(WorkspaceUpdater.java:153)
        at hudson.scm.SubversionSCM$CheckOutTask.perform(SubversionSCM.java:903)
        at hudson.scm.SubversionSCM$CheckOutTask.invoke(SubversionSCM.java:884)
        at hudson.scm.SubversionSCM$CheckOutTask.invoke(SubversionSCM.java:867)
        at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2348)
        at hudson.remoting.UserRequest.perform(UserRequest.java:118)
        at hudson.remoting.UserRequest.perform(UserRequest.java:48)
        at hudson.remoting.Request$2.run(Request.java:326)
        at 
hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:679)