java.lang.String.intern(Native Method)
    org.xmlpull.mxp1.MXParserCachingStrings.newStringIntern(MXParserCachingStrings.java:317)
    org.xmlpull.mxp1.MXParserCachingStrings.newString(MXParserCachingStrings.java:287)
    org.xmlpull.mxp1.MXParser.parseStartTag(MXParser.java:1779)
    org.xmlpull.mxp1.MXParser.nextImpl(MXParser.java:1127)
    org.xmlpull.mxp1.MXParser.next(MXParser.java:1093)
    com.thoughtworks.xstream.io.xml.XppReader.pullNextEvent(XppReader.java:109)
    com.thoughtworks.xstream.io.xml.AbstractPullReader.readRealEvent(AbstractPullReader.java:148)
    com.thoughtworks.xstream.io.xml.AbstractPullReader.readEvent(AbstractPullReader.java:135)
    com.thoughtworks.xstream.io.xml.AbstractPullReader.hasMoreChildren(AbstractPullReader.java:87)
    com.thoughtworks.xstream.io.ReaderWrapper.hasMoreChildren(ReaderWrapper.java:32)
    hudson.util.RobustReflectionConverter.doUnmarshal(RobustReflectionConverter.java:267)
    hudson.util.RobustReflectionConverter.unmarshal(RobustReflectionConverter.java:228)
    org.jenkinsci.plugins.workflow.support.storage.SimpleXStreamFlowNodeStorage$FlowNodeConverter.unmarshal(SimpleXStreamFlowNodeStorage.java:144)
    com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
    com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
    com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
    hudson.util.RobustReflectionConverter.unmarshalField(RobustReflectionConverter.java:349)
    hudson.util.RobustReflectionConverter.doUnmarshal(RobustReflectionConverter.java:289)
    hudson.util.RobustReflectionConverter.unmarshal(RobustReflectionConverter.java:228)
    com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
    com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
    com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
    com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
    com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
    com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
    com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1189)
    hudson.util.XStream2.unmarshal(XStream2.java:113)
    com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1173)
    com.thoughtworks.xstream.XStream.fromXML(XStream.java:1053)
    hudson.XmlFile.read(XmlFile.java:142)
    org.jenkinsci.plugins.workflow.support.storage.SimpleXStreamFlowNodeStorage$PersistenceContext.loadInner(SimpleXStreamFlowNodeStorage.java:224)
    org.jenkinsci.plugins.workflow.support.storage.SimpleXStreamFlowNodeStorage$PersistenceContext.loadOuter(SimpleXStreamFlowNodeStorage.java:213)
    org.jenkinsci.plugins.workflow.support.storage.SimpleXStreamFlowNodeStorage$PersistenceContext.access$100(SimpleXStreamFlowNodeStorage.java:185)
    org.jenkinsci.plugins.workflow.support.storage.SimpleXStreamFlowNodeStorage.getNode(SimpleXStreamFlowNodeStorage.java:87)
    org.jenkinsci.plugins.workflow.cps.CpsFlowExecution$ConverterImpl.unmarshal(CpsFlowExecution.java:857)