JSL - Job terminated after readFile without exception or error

job.log

00:00:05.175 [DEBUG] manageTriggers : Call VersionHelper.extractBaseVersion
[Pipeline] echo
00:00:05.376 [DEBUG] extractBaseVersion : script: manageTriggers@410b44de 	 sourceFile: version.txt
[Pipeline] readFile
[Pipeline] echo
00:00:05.537 [DEBUG] extractBaseVersion : sourceFile: version.txt --> 1.2.3
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] }
[Pipeline] // timeout
[Pipeline] }
Terminated
[Pipeline] // timestamps
[Pipeline] }
[Pipeline] // ansiColor
[Pipeline] End of Pipeline
[Bitbucket] Notifying commit build result
Can not determine Jenkins root URL or Jenkins URL is not a valid URL regarding Bitbucket API. Commit status notifications are disabled until a root URL is configured in Jenkins global configuration.
Finished: SUCCESS

job2.log

[Pipeline] readFile
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] }
[Pipeline] // timestamps
[Pipeline] }
[Pipeline] // ansiColor
[Pipeline] End of Pipeline
[Bitbucket] Notifying commit build result
an exception which occurred:
	in field com.myjsl.lib.TriggerHandler.cause
	in object com.myjsl.lib.UserTriggerHandler@21511340
	in field com.cloudbees.groovy.cps.impl.FunctionCallEnv.locals
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@2a1e8b3e
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@41bb88eb
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@2e38d0a
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@4bc55956
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@25f25dfa
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@46d02342
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@210ff72e
	in field com.cloudbees.groovy.cps.Continuable.e
	in object org.jenkinsci.plugins.workflow.cps.SandboxContinuable@478920fa
	in field org.jenkinsci.plugins.workflow.cps.CpsThread.program
	in object org.jenkinsci.plugins.workflow.cps.CpsThread@4379c38b
	in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.threads
	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@57abb54a
	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@57abb54a
Caused: java.io.NotSerializableException: hudson.model.Cause$UserIdCause
	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.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.GeneratedMethodAccessor42.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.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.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.TreeMap.writeObject(TreeMap.java:2438)
	at sun.reflect.GeneratedMethodAccessor162.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:482)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:458)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgramIfPossible(CpsThreadGroup.java:445)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:372)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$200(CpsThreadGroup.java:83)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:244)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:232)
	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:131)
	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
	at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
	at java.util.concurrent.Executors$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)
Finished: FAILURE

manageTriggers.groovy

import com.cloudbees.groovy.cps.NonCPS
import com.myjsl.lib.UserTriggerHandler
import com.myjsl.utils.Logger
import com.myjsl.utils.LogLevel
import hudson.model.Cause.UserIdCause

@NonCPS
def call (){
    Logger.init(this, LogLevel.DEBUG)
    Logger logger = new Logger(this)

    //TODO: Use Fabric pattern
    //TODO: get generic cause
    def c = currentBuild.rawBuild.getCause(hudson.model.Cause$UserIdCause)
    logger.debug("UserIdCause? ${(c instanceof UserIdCause)}")

    UserTriggerHandler uth = new UserTriggerHandler(this, c)
}

TriggerHandler.groovy

package com.myjsl.lib

import com.myjsl.utils.Logger
import hudson.model.Cause

abstract class TriggerHandler implements Serializable{
    final protected VersionHelper version
    final protected Cause cause
    final protected  script
    final protected Logger log

    protected TriggerHandler(script, cause){
        log = new Logger(script)
        this.version = null
        this.cause = cause
        this.script = script
    }

    abstract setVersion()

    protected getVersion(){
        return this.version
    }
}

UserTriggerHandler.groovy

package com.myjsl.lib

import com.cloudbees.groovy.cps.NonCPS
import hudson.model.Cause

class UserTriggerHandler extends TriggerHandler{

    protected UserTriggerHandler(script, Cause.UserIdCause cause) {
        super(script, cause)

        log.debug("getShortDescription: ${cause.getShortDescription()} \n " +
                "\t getUserUrl: ${cause.getUserUrl()} \n " +
                "\t getUserId: ${cause.getUserId()}")

     setVersion()
    }

    @NonCPS
    def setVersion() {
        log.debug("Call VersionHelper.extractBaseVersion")
        String baseVersion = VersionHelper.extractBaseVersion(script)
        log.debug("baseVersion: ${baseVersion}")

        VersionHelper ver = new VersionHelper(script,baseVersion)
        log.debug("version : ${ver.toString()}")
        this.version=ver
    }
}

VersionHelper.groovy

package com.myjsl.lib

import com.cloudbees.groovy.cps.NonCPS
import com.myjsl.utils.Logger
import com.myjsl.utils.LogLevel

class VersionHelper implements Serializable, Comparable<VersionHelper> {

    static String extractBaseVersion(script, sourceFile='version.txt'){
        Logger log = new Logger("extractBaseVersion")
        log.debug("script: ${script} \t sourceFile: ${sourceFile}")

        def v

        try {
            v = script.readFile(sourceFile)
            log.debug("sourceFile: ${sourceFile} --> ${v}")
        }
        catch (ex){
            log.error("Failed to read sourceFile: ${sourceFile}")
        }

        log.debug("return: ${v}")
        return v
    }
}

https://jenkins.io/blog/2017/02/01/pipeline-scalability-best-practice/

Gotcha: It’s not guaranteed that use of a step will generate an error (there is an open RFE to implement that), but you should not rely on that behavior. You may see improper handling of exceptions, in particular.