Hi all,

Our Jenkins instance has been unstable ever since we've moved it to RHEL so 
I've been watching the logs to see if there is anything I can find to correlate 
the crashes. (already filed a bug on all the npes we're getting)
I now see an error in the log when it's become unresponsive that is related to 
email-ext plugin. I did a search and found an old bug with the same error 
[JENKINS-28402] but it was on a different version and has been closed with some 
back and forth that didn't seem to address the issue.

Jenkins 2.46.1
Email-ext 2.57.2

WARNING: Failed to instantiate 
Key[type=hudson.plugins.emailext.ExtendedEmailPublisherDescriptor, 
annotation=[none]]; skipping this component
com.google.inject.ProvisionException: Unable to provision, see the following 
errors:

1) Tried proxying hudson.plugins.emailext.ExtendedEmailPublisherDescriptor to 
support a circular dependency, but it is not an interface.

1 error
        at 
com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:52)
        at 
com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:145)
        at 
hudson.ExtensionFinder$GuiceFinder$FaultTolerantScope$1.get(ExtensionFinder.java:424)
        at 
com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at 
com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:1016)
        at 
com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1103)jjjjjjj
        at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:1012)
        at hudson.ExtensionFinder$GuiceFinder._find(ExtensionFinder.java:386)
        at hudson.ExtensionFinder$GuiceFinder.find(ExtensionFinder.java:377)
        at 
hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:472)
        at hudson.ExtensionList.load(ExtensionList.java:365)
        at hudson.ExtensionList.ensureLoaded(ExtensionList.java:303)
        at hudson.ExtensionList.getComponents(ExtensionList.java:168)
        at hudson.DescriptorExtensionList.load(DescriptorExtensionList.java:191)
        at hudson.ExtensionList.ensureLoaded(ExtensionList.java:303)
        at hudson.ExtensionList.iterator(ExtensionList.java:157)
        at hudson.model.User.load(User.java:201)
        at hudson.model.User.<init>(User.java:155)
        at hudson.model.User.getOrCreate(User.java:463)
        at hudson.model.User.getById(User.java:534)
        at hudson.model.User.get(User.java:518)
        at hudson.model.User.current(User.java:502)
        at 
org.jenkinsci.plugins.scriptsecurity.scripts.ApprovalContext.withCurrentUser(ApprovalContext.java:73)
        at 
hudson.plugins.emailext.ExtendedEmailPublisherDescriptor.setDefaultPostsendScript(ExtendedEmailPublisherDescriptor.java:514)
        at 
hudson.plugins.emailext.ExtendedEmailPublisherDescriptor.<init>(ExtendedEmailPublisherDescriptor.java:183)
        at 
hudson.plugins.emailext.ExtendedEmailPublisherDescriptor$$FastClassByGuice$$5dfa54d0.newInstance(<generated>)
        at 
com.google.inject.internal.cglib.reflect.$FastConstructor.newInstance(FastConstructor.java:40)
        at 
com.google.inject.internal.DefaultConstructionProxyFactory$1.newInstance(DefaultConstructionProxyFactory.java:61)
        at 
com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:105)
        at 
com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:85)
        at 
com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:267)
        at 
com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
        at 
com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1103)
        at 
com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
        at 
com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:145)
        at 
hudson.ExtensionFinder$GuiceFinder$FaultTolerantScope$1.get(ExtensionFinder.java:424)
        at 
com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
        at 
com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:1016)
        at 
com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
        at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:1012)
        at hudson.ExtensionFinder$GuiceFinder._find(ExtensionFinder.java:386)
        at hudson.ExtensionFinder$GuiceFinder.find(ExtensionFinder.java:377)
        at 
hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:472)
        at hudson.ExtensionList.load(ExtensionList.java:365)
        at hudson.ExtensionList.ensureLoaded(ExtensionList.java:303)
        at hudson.ExtensionList.iterator(ExtensionList.java:157)
        at jenkins.model.Jenkins.getDescriptorByType(Jenkins.java:1519)
        at 
hudson.plugins.copyartifact.BuildSelectorParameter.initAliases(BuildSelectorParameter.java:156)
        at 
hudson.plugins.copyartifact.CopyArtifactPlugin.postInitialize(CopyArtifactPlugin.java:35)
        at hudson.PluginManager$2$1$2.run(PluginManager.java:543)
        at 
org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
        at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
        at jenkins.model.Jenkins$7.runTask(Jenkins.java:1064)
        at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
        at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
        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)

Any pointers appreciated as it's getting old having to restart Jenkins every 
time I want to do anything with it.

Thanks
chanda

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