title: Jenkins pipeline exception java.io.NotSerializableException: hudson.model.FreeStyleProject
body: <p>I create Job pipeline, and I try get all jobs which matches regexp, and after parallel start. I get exception: java.io.NotSerializableException: hudson.model.FreeStyleProject
  Jenkins v 2.5</p>
  
  <pre><code>node {
      stage('deploy') {
          def branches = [:]
          def theJobs = Jenkins.instance.getAllItems(Job);
          for(int i = 0; i &lt; theJobs.size; i++)
          {
              def jobName= theJobs[i].getName();             
              if( jobName =~ /server\-[0-9][0-9]\..*/)
              {
                  branches[i] = {
                      build job : "${jobName}", parameters: [[$class: 'StringParameterValue', name: 'BRANCH', value: "${BRANCH}"] ]
                  }
              }
              jobName = null
          }
          parallel branches
      }
  }
  </code></pre>
  
  <p>Full text exception:</p>
  
  <pre><code>java.io.NotSerializableException: hudson.model.FreeStyleProject
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:860)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:569)
  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:344)
  at java.util.HashMap.internalWriteEntries(HashMap.java:1777)
  at java.util.HashMap.writeObject(HashMap.java:1354)
  at sun.reflect.GeneratedMethodAccessor277.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:271)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:976)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:967)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  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:344)
  at java.util.HashMap.internalWriteEntries(HashMap.java:1777)
  at java.util.HashMap.writeObject(HashMap.java:1354)
  at sun.reflect.GeneratedMethodAccessor277.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:271)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:976)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1032)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:988)
  at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:854)
  at org.jboss.marshalling.AbstractObjectOutput.writeObject(AbstractObjectOutput.java:58)
  at org.jboss.marshalling.AbstractMarshaller.writeObject(AbstractMarshaller.java:111)
  at org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.writeObject(RiverWriter.java:140)
  at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:453)
  at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:427)
  at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgramIfPossible(CpsThreadGroup.java:415)
  at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:360)
  at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$100(CpsThreadGroup.java:80)
  at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:240)
  at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:228)
  at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:64)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:112)
  at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  at java.lang.Thread.run(Thread.java:745)
  Caused by: an exception which occurred:
  in field locals
  in field parent
  in field parent
  in field parent
  in field parent
  in field capture
  in field def
  in field closures
  in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@112faaa9
  </code></pre>
  
  <p>Finished: FAILURE</p>