org.jvnet.hudson.reactor.ReactorException: hudson.util.IOException2: Unable to read /var/lib/jenkins/config.xml
	at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:246)
	at hudson.model.Hudson.executeReactor(Hudson.java:752)
	at hudson.model.Hudson.(Hudson.java:666)
	at hudson.model.Hudson.(Hudson.java:606)
	at hudson.WebAppMain$2.run(WebAppMain.java:222)
Caused by: hudson.util.IOException2: Unable to read /var/lib/jenkins/config.xml
	at hudson.XmlFile.unmarshal(XmlFile.java:152)
	at hudson.model.Hudson$12.run(Hudson.java:2254)
	at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
	at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
	at hudson.model.Hudson$4.runTask(Hudson.java:734)
	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.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:636)
Caused by: com.thoughtworks.xstream.converters.ConversionException: only START_TAG can have attributes END_TAG seen ...ategy class="hudson.security.ProjectMatrixAuthorizationStrategy"/>... @7:86 : only START_TAG can have attributes END_TAG seen ...ategy class="hudson.security.ProjectMatrixAuthorizationStrategy"/>... @7:86
---- Debugging information ----
message             : only START_TAG can have attributes END_TAG seen ...ategy class="hudson.security.ProjectMatrixAuthorizationStrategy"/>... @7:86
cause-exception     : java.lang.IndexOutOfBoundsException
cause-message       : only START_TAG can have attributes END_TAG seen ...ategy class="hudson.security.ProjectMatrixAuthorizationStrategy"/>... @7:86
class               : hudson.model.Hudson
required-type       : hudson.security.ProjectMatrixAuthorizationStrategy
path                : /hudson/authorizationStrategy
line number         : 7
-------------------------------
	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 hudson.util.RobustReflectionConverter.unmarshalField(RobustReflectionConverter.java:290)
	at hudson.util.RobustReflectionConverter.doUnmarshal(RobustReflectionConverter.java:233)
	at hudson.util.RobustReflectionConverter.unmarshal(RobustReflectionConverter.java:180)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
	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)
	... 9 more
Caused by: java.lang.IndexOutOfBoundsException: only START_TAG can have attributes END_TAG seen ...ategy class="hudson.security.ProjectMatrixAuthorizationStrategy"/>... @7:86
	at org.xmlpull.mxp1.MXParser.getAttributeValue(MXParser.java:927)
	at com.thoughtworks.xstream.io.xml.XppReader.getAttribute(XppReader.java:93)
	at com.thoughtworks.xstream.io.ReaderWrapper.getAttribute(ReaderWrapper.java:56)
	at hudson.util.RobustReflectionConverter.instantiateNewInstance(RobustReflectionConverter.java:324)
	at hudson.util.RobustReflectionConverter.unmarshal(RobustReflectionConverter.java:179)
	at hudson.security.ProjectMatrixAuthorizationStrategy$ConverterImpl.unmarshal(ProjectMatrixAuthorizationStrategy.java:104)
	at hudson.util.XStream2$AssociatedConverterImpl.unmarshal(XStream2.java:224)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
	... 25 more