switch(foobarstring) { 
    case { it.contains("foo") }:
        echo "foo"
        break 
    case { it.contains("bar") }:
        echo "bar"
        break
} 

an exception which occurred:
	in field groovy.lang.Closure.bcw
	in object org.jenkinsci.plugins.workflow.cps.CpsClosure2@38855836
	in field com.cloudbees.groovy.cps.impl.CpsClosureDef.self
	in object com.cloudbees.groovy.cps.impl.CpsClosureDef@4c475c4d
	in field com.cloudbees.groovy.cps.impl.CpsCallableInvocation.call
	in object com.cloudbees.groovy.cps.impl.CpsCallableInvocation@3f34058d
	in field com.cloudbees.groovy.cps.Outcome.abnormal
	in object com.cloudbees.groovy.cps.Outcome@7674d758
	in field org.jenkinsci.plugins.workflow.cps.CpsBodyExecution.outcome
	in object org.jenkinsci.plugins.workflow.cps.CpsBodyExecution@48ccfe84
	in field org.jenkinsci.plugins.workflow.steps.PushdStep$Execution.body
	in object org.jenkinsci.plugins.workflow.steps.PushdStep$Execution@63867ccd
	in field org.jenkinsci.plugins.workflow.cps.CpsThread.step
	in object org.jenkinsci.plugins.workflow.cps.CpsThread@37aa9b17
	in field org.jenkinsci.plugins.workflow.cps.CpsBodyExecution.thread
	in object org.jenkinsci.plugins.workflow.cps.CpsBodyExecution@9bdba75
	in field org.jenkinsci.plugins.workflow.cps.CpsBodyExecution$SuccessAdapter.this$0
	in object org.jenkinsci.plugins.workflow.cps.CpsBodyExecution$SuccessAdapter@7f9312f6
	in field com.cloudbees.groovy.cps.impl.CallEnv.returnAddress
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@6c4d62e2
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.TryBlockEnv@46999ae8
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.ClosureCallEnv@76a00f0e
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@5508c8bd
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@6bc826c7
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.ClosureCallEnv@501c02b0
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@68397644
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@2d126d9e
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@8a67925
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.ClosureCallEnv@72794c87
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@106ab088
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@374ccbb
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@4e169663
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@9cd779d
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@170091ac
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@5ee81776
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@13f1743f
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@6c59b1a3
	in field com.cloudbees.groovy.cps.impl.CpsClosureDef.capture
	in object com.cloudbees.groovy.cps.impl.CpsClosureDef@2dd39f63
	in field com.cloudbees.groovy.cps.impl.CpsClosure.def
	in object org.jenkinsci.plugins.workflow.cps.CpsClosure2@59976349
	in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.closures
	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@4329b53d
	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@4329b53d
Also:   an exception which occurred:
	in field groovy.lang.Closure.bcw
	in object org.jenkinsci.plugins.workflow.cps.CpsClosure2@127bf941
	in field com.cloudbees.groovy.cps.impl.CpsClosureDef.self
	in object com.cloudbees.groovy.cps.impl.CpsClosureDef@761f592d
	in field com.cloudbees.groovy.cps.impl.CpsCallableInvocation.call
	in object com.cloudbees.groovy.cps.impl.CpsCallableInvocation@2e267994
	in field com.cloudbees.groovy.cps.Outcome.abnormal
	in object com.cloudbees.groovy.cps.Outcome@643581ce
	in field org.jenkinsci.plugins.workflow.cps.CpsBodyExecution.outcome
	in object org.jenkinsci.plugins.workflow.cps.CpsBodyExecution@6f12de1b
	in field org.jenkinsci.plugins.workflow.steps.PushdStep$Execution.body
	in object org.jenkinsci.plugins.workflow.steps.PushdStep$Execution@1615a4a1
	in field org.jenkinsci.plugins.workflow.cps.CpsThread.step
	in object org.jenkinsci.plugins.workflow.cps.CpsThread@12bc87ee
	in field org.jenkinsci.plugins.workflow.cps.CpsBodyExecution.thread
	in object org.jenkinsci.plugins.workflow.cps.CpsBodyExecution@2096073d
	in field org.jenkinsci.plugins.workflow.cps.CpsBodyExecution$SuccessAdapter.this$0
	in object org.jenkinsci.plugins.workflow.cps.CpsBodyExecution$SuccessAdapter@6ec92bf6
	in field com.cloudbees.groovy.cps.impl.CallEnv.returnAddress
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@156d9aff
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.TryBlockEnv@222ede4e
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.ClosureCallEnv@6f1430b2
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@3639bcd8
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@256b440
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.ClosureCallEnv@5353c48a
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@4a4276c3
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@2a03db01
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@73a44e1e
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.ClosureCallEnv@3495b3a2
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@2a29411b
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@6dd6851e
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@1f5b05b3
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@42cb9d29
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@57b2115e
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@31e3c2a
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@54213d8e
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@4c7b32eb
	in field com.cloudbees.groovy.cps.impl.CpsClosureDef.capture
	in object com.cloudbees.groovy.cps.impl.CpsClosureDef@1e2210ab
	in field com.cloudbees.groovy.cps.impl.CpsClosure.def
	in object org.jenkinsci.plugins.workflow.cps.CpsClosure2@1c80b0a
	in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.closures
	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@4329b53d
	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@4329b53d
	Caused: java.io.NotSerializableException: org.codehaus.groovy.runtime.callsite.BooleanClosureWrapper
Caused: java.io.NotSerializableException: org.codehaus.groovy.runtime.callsite.BooleanClosureWrapper
	at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:860)
	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.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.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.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.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.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.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.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.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.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:1790)
	at java.util.HashMap.writeObject(HashMap.java:1363)
	at sun.reflect.GeneratedMethodAccessor78.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:273)
	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.lambda$writeObject$0(RiverWriter.java:144)
	at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:108)
	at org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.writeObject(RiverWriter.java:143)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:467)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:443)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgramIfPossible(CpsThreadGroup.java:430)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:367)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$200(CpsThreadGroup.java:82)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:243)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:231)
	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:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)