Mar 07, 2014 8:32:51 PM SEVERE jenkins.InitReactorRunner$1 onTaskFailed
Failed Inspecting plugin /var/lib/jenkins/plugins/ssh-slaves.jpi
java.io.IOException: Failed to expand /var/lib/jenkins/plugins/ssh-slaves.jpi
	at hudson.ClassicPluginStrategy.explode(ClassicPluginStrategy.java:429)
	at hudson.ClassicPluginStrategy.createPluginWrapper(ClassicPluginStrategy.java:126)
	at hudson.PluginManager$1$3$1.run(PluginManager.java:236)
	at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
	at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
	at jenkins.model.Jenkins$7.runTask(Jenkins.java:899)
	at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
	at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
	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:701)
Caused by: Error while expanding /var/lib/jenkins/plugins/ssh-slaves.jpi
java.util.zip.ZipException: archive is not a ZIP archive
	at org.apache.tools.ant.taskdefs.Expand.expandFile(Expand.java:192)
	at org.apache.tools.ant.taskdefs.Expand.execute(Expand.java:132)
	at hudson.ClassicPluginStrategy.unzipExceptClasses(ClassicPluginStrategy.java:501)
	at hudson.ClassicPluginStrategy.explode(ClassicPluginStrategy.java:426)
	... 10 more
Caused by: java.util.zip.ZipException: archive is not a ZIP archive
	at org.apache.tools.zip.ZipFile.positionAtCentralDirectory(ZipFile.java:481)
	at org.apache.tools.zip.ZipFile.populateFromCentralDirectory(ZipFile.java:320)
	at org.apache.tools.zip.ZipFile.<init>(ZipFile.java:186)
	at org.apache.tools.ant.taskdefs.Expand.expandFile(Expand.java:170)
	... 13 more