With hudson 1.136 I get an error message for some of my builds. I have switched
back to 1.133 where this seems to work. I think this is a duplicate of bug# 800,
but I dont have permissions to comment. This is the complete console output:

started
FATAL: Timer already cancelled.
java.lang.IllegalStateException: Timer already cancelled.
at java.util.Timer.sched(Unknown Source)
at java.util.Timer.schedule(Unknown Source)
at
org.tmatesoft.svn.core.wc.DefaultSVNRepositoryPool.<init>(DefaultSVNRepositoryPool.java:132)
at
org.tmatesoft.svn.core.wc.DefaultSVNRepositoryPool.<init>(DefaultSVNRepositoryPool.java:110)
at org.tmatesoft.svn.core.wc.SVNClientManager.<init>(SVNClientManager.java:141)
at
org.tmatesoft.svn.core.wc.SVNClientManager.newInstance(SVNClientManager.java:183)
at hudson.scm.SubversionSCM.createSvnClientManager(SubversionSCM.java:416)
at hudson.scm.SubversionSCM$CheckOutTask.invoke(SubversionSCM.java:358)
at hudson.scm.SubversionSCM$CheckOutTask.invoke(SubversionSCM.java:341)
at hudson.FilePath.act(FilePath.java:280)
at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:338)
at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:295)
at hudson.model.AbstractProject.checkout(AbstractProject.java:485)
at hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:160)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:126)
at hudson.model.Run.run(Run.java:573)
at hudson.model.Build.run(Build.java:107)
at hudson.model.ResourceController.execute(ResourceController.java:66)
at hudson.model.Executor.run(Executor.java:59)