Always got an exception in Checkout

magicfly · May 16, 2025, 8:04am

Hi, I’m trying to perform a git checkout from a remote repository in Gitlab with a pipeline but it is failing. Could anyone help on it. Thanks! Here’s the pipeline snippet:

checkout([
                        $class: 'GitSCM',
                        branches: [[name: env.REAL_BRANCH]],
                        extensions: [
                            [$class: 'CloneOption', 
                            timeout: 60],
                            [$class: 'SubmoduleOption',
                            disableSubmodules: false,
                            parentCredentials: true,
                            recursiveSubmodules: false,
                            reference: '',
                            shallow: false,
                            trackingSubmodules: false],
                            [$class:'CheckoutOption',
                            timeout:60]
                        ],
                        submoduleCfg: [],
                        userRemoteConfigs: [[url: "${env.git_url}", credentialsId: 'MagicAccount']]
                        ])

The log is:

The recommended git tool is: NONE
using credential xxxxxxx
Cloning the remote Git repository
Cloning repository xxxxxxxx
 > git init C:\ProgramData\Jenkins\.jenkins\workspace\TestRequestFlow # timeout=10
[Pipeline] }
[Pipeline] // script
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // timeout
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
an exception which occurred:
	in field com.cloudbees.groovy.cps.impl.BlockScopeEnv.locals
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@6be68234
	in field com.cloudbees.groovy.cps.impl.ProxyEnv.parent
	in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@6362e84b
	in field com.cloudbees.groovy.cps.impl.CallEnv.caller
	in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@301541c0
	in field com.cloudbees.groovy.cps.Continuable.e
	in object org.jenkinsci.plugins.workflow.cps.SandboxContinuable@483984de
	in field org.jenkinsci.plugins.workflow.cps.CpsThread.program
	in object org.jenkinsci.plugins.workflow.cps.CpsThread@1a7be8cf
	in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.threads
	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@4629fe82
	in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@4629fe82
Also:   org.jenkinsci.plugins.workflow.actions.ErrorAction$ErrorId: 40877888-4586-4fac-a416-6fa2be9a1ab1
Caused: java.io.NotSerializableException: java.util.regex.Matcher
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:278)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179)
	at java.base/java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:354)
	at java.base/java.util.HashMap.internalWriteEntries(HashMap.java:1952)
	at java.base/java.util.HashMap.writeObject(HashMap.java:1505)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.reflect.SerMethods.callWriteObject(SerMethods.java:69)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:231)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1128)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1119)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1119)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1119)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179)
	at java.base/java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:354)
	at java.base/java.util.HashMap.internalWriteEntries(HashMap.java:1952)
	at java.base/java.util.HashMap.writeObject(HashMap.java:1505)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.reflect.SerMethods.callWriteObject(SerMethods.java:69)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:231)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1128)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1182)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1140)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:271)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.AbstractObjectOutput.writeObject(AbstractObjectOutput.java:58)
	at PluginClassLoader for workflow-support//org.jboss.marshalling.AbstractMarshaller.writeObject(AbstractMarshaller.java:116)
	at PluginClassLoader for workflow-support//org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.lambda$writeObject$1(RiverWriter.java:147)
	at PluginClassLoader for script-security//org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:331)
	at PluginClassLoader for workflow-support//org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.writeObject(RiverWriter.java:146)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:586)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:563)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgramIfPossible(CpsThreadGroup.java:546)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:470)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:327)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:292)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService.lambda$wrap$4(CpsVmExecutorService.java:140)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:139)
	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
	at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68)
	at jenkins.util.ErrorLoggingExecutorService.lambda$wrap$0(ErrorLoggingExecutorService.java:51)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.call(CpsVmExecutorService.java:53)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.call(CpsVmExecutorService.java:50)
	at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:136)
	at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:275)
	at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService.lambda$categoryThreadFactory$0(CpsVmExecutorService.java:50)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Finished: FAILURE

mawinter69 · May 16, 2025, 8:44am

This is not related to the checkout step I think.
I assume somewhere else in your pipeline script you’re using a regex. As Jenkins will serialize the pipeline state frequently any usage of things that are not serializable will lead to this error.
Such things must be wrapped in a method that is annotated with @NonCPS and inside the method you can’t use regular pipeline steps.

magicfly · May 16, 2025, 9:20am

Thank you so much! It works after I follow your suggestion to move all regex part in pipeline into functions marked with @NonCPS then checkout works well.
The exception always happens in checkout step, I thought it was caused by checkout.
Thanks again!

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