This a very basic test code for the pipleine job
node('windows') { checkout([$class: 'GitSCM', branches: [[name: '*/master']], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs: [[credentialsId: 'cca9c557-65b8-4c72-9176-f78d', url: 'g...@github.com:SomeProjects/trobocopy.git']]]) def pathMap = ['folder1':'dst1', 'folder2':'dst2', 'folder3':'dst3', 'folder4':'dst4'] pathMap.each { path, dir -> bat "xcopy %cd%${path} C:\\${dir} /E /Y /V" } } The jenkins console shows [Pipeline] End of Pipelinejava.io.NotSerializableException: java.util.LinkedHashMap$Entry at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:860) at org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65) at org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56) at org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50) at org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:343) at java.util.HashMap.writeObject(HashMap.java:1129) at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) Caused by: an exception which occurred: in field locals in field parent in field capture in field def in field closures in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@4d0c20da Finished: FAILURE -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/cbe33a56-beab-414f-9302-8044e1e1a8f4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.