[2020-02-23T12:22:16.287Z] java.util.ConcurrentModificationException
[2020-02-23T12:22:16.287Z] at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909)
[2020-02-23T12:22:16.287Z] at java.util.ArrayList$Itr.next(ArrayList.java:859)
[2020-02-23T12:22:16.287Z] at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:73)
[2020-02-23T12:22:16.287Z] at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
[2020-02-23T12:22:16.287Z] at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
[2020-02-23T12:22:16.287Z] at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)
[2020-02-23T12:22:16.287Z] at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:263)
[2020-02-23T12:22:16.287Z] at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:250)
[2020-02-23T12:22:16.287Z] Caused: java.lang.RuntimeException: Failed to serialize org.jenkinsci.plugins.workflow.libs.LibrariesAction#libraries for class org.jenkinsci.plugins.workflow.libs.LibrariesAction
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:254)
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:222)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:208)
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:149)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:64)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:74)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:263)
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:250)
[2020-02-23T12:22:16.288Z] Caused: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class org.jenkinsci.plugins.workflow.job.WorkflowRun
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:254)
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:222)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:208)
[2020-02-23T12:22:16.288Z] at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:149)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.XStream.marshal(XStream.java:1026)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.XStream.marshal(XStream.java:1015)
[2020-02-23T12:22:16.288Z] at com.thoughtworks.xstream.XStream.toXML(XStream.java:988)
[2020-02-23T12:22:16.288Z] at hudson.util.XStream2.toXMLUTF8(XStream2.java:313)
[2020-02-23T12:22:16.288Z] at org.jenkinsci.plugins.workflow.support.PipelineIOUtils.writeByXStream(PipelineIOUtils.java:34)
[2020-02-23T12:22:16.288Z] at org.jenkinsci.plugins.workflow.job.WorkflowRun.save(WorkflowRun.java:1140)
[2020-02-23T12:22:16.288Z] at hudson.BulkChange.commit(BulkChange.java:98)
[2020-02-23T12:22:16.288Z] at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.notifyListeners(CpsFlowExecution.java:1475)
[2020-02-23T12:22:16.288Z] at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$3.run(CpsThreadGroup.java:458)
[2020-02-23T12:22:16.288Z] at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.run(CpsVmExecutorService.java:37)
[2020-02-23T12:22:16.288Z] at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:131)
[2020-02-23T12:22:16.288Z] at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
[2020-02-23T12:22:16.288Z] at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
[2020-02-23T12:22:16.288Z] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[2020-02-23T12:22:16.288Z] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[2020-02-23T12:22:16.288Z] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[2020-02-23T12:22:16.288Z] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[2020-02-23T12:22:16.288Z] at java.lang.Thread.run(Thread.java:748)