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hudson.util.IOException2: Unable to read /home/builduser/hudson/hudson.plugins.clearcase.ClearCaseSCM.xml at hudson.XmlFile.unmarshal(XmlFile.java:152) at hudson.model.Descriptor.load(Descriptor.java:659) at hudson.scm.SCMDescriptor.load(SCMDescriptor.java:80) at hudson.plugins.clearcase.ClearCaseSCM$ClearCaseScmDescriptor.<init>(ClearCaseSCM.java:236) at hudson.plugins.clearcase.PluginImpl.<clinit>(PluginImpl.java:38) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at java.lang.Class.newInstance0(Unknown Source) at java.lang.Class.newInstance(Unknown Source) at hudson.ClassicPluginStrategy.load(ClassicPluginStrategy.java:272) at hudson.PluginManager$2$1$1.run(PluginManager.java:275) at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146) at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259) at hudson.model.Hudson$3.runTask(Hudson.java:691) at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187) at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)Caused by: com.thoughtworks.xstream.converters.ConversionException: null : null---- Debugging information ----cause-exception : java.lang.NullPointerExceptioncause-message : nullclass : hudson.plugins.clearcase.ClearCaseSCM$ClearCaseScmDescriptorrequired-type : hudson.plugins.clearcase.ClearCaseSCM$ClearCaseScmDescriptorpath : /hudson.plugins.clearcase.ClearCaseSCM$ClearCaseScmDescriptorline number : 9------------------------------- at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:89) at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76) at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60) at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137) at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:926) at hudson.util.XStream2.unmarshal(XStream2.java:80) at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:912) at hudson.XmlFile.unmarshal(XmlFile.java:148)Caused by: java.lang.NullPointerException at hudson.diagnosis.OldDataMonitor.report(OldDataMonitor.java:178) at hudson.util.RobustReflectionConverter.doUnmarshal(RobustReflectionConverter.java:270) at hudson.util.RobustReflectionConverter.unmarshal(RobustReflectionConverter.java:180) at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82) ... 10 more