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  1. Jenkins
  2. JENKINS-35526

java.lang.ClassCastException: org.jenkinsci.plugins.conditionalbuildstep.singlestep.SingleConditionalBuilder cannot be cast to hudson.tasks.Publisher

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      Description

      Basically, I believe this stacktrace is saying that when the maven-plugin is doing [getParent().getPublishers()](https://github.com/jenkinsci/maven-plugin/blob/9c5eb51dda735450a6cc7a59201efe2cd795625a/src/main/java/hudson/maven/MavenModule.java#L675) in Runtime is getting `ClassCastException` because there is something on the list that is not a `Publisher`. I believe the problem is in the [conditional-buildstep-plugin](https://github.com/jenkinsci/conditional-buildstep-plugin/blob/a906535e3d680c7c8ca5d79a3bde9c80d56e9564/src/main/java/org/jenkinsci/plugins/conditionalbuildstep/singlestep/SingleConditionalBuilder.java#L113) which is doing a cast to `DependecyDeclarer ` - which is deprecated - and `DependencyDeclarer` needs to be used instead.

      ```
      udson.util.HudsonFailedToLoad: org.jvnet.hudson.reactor.ReactorException: java.lang.ClassCastException: org.jenkinsci.plugins.conditionalbuildstep.singlestep.SingleConditionalBuilder cannot be cast to hudson.tasks.Publisher 
      at hudson.WebAppMain$3.run(WebAppMain.java:237) 
      Caused by: org.jvnet.hudson.reactor.ReactorException: java.lang.ClassCastException: org.jenkinsci.plugins.conditionalbuildstep.singlestep.SingleConditionalBuilder cannot be cast to hudson.tasks.Publisher 
      at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:269) 
      at jenkins.InitReactorRunner.run(InitReactorRunner.java:44) 
      at jenkins.model.Jenkins.executeReactor(Jenkins.java:935) 
      at jenkins.model.Jenkins.<init>(Jenkins.java:816) 
      at hudson.model.Hudson.<init>(Hudson.java:83) 
      at hudson.model.Hudson.<init>(Hudson.java:79) 
      at hudson.WebAppMain$3.run(WebAppMain.java:225) 
      Caused by: java.lang.ClassCastException: org.jenkinsci.plugins.conditionalbuildstep.singlestep.SingleConditionalBuilder cannot be cast to hudson.tasks.Publisher 
      at hudson.maven.MavenModule.getDependencyRelevancy(MavenModule.java:675) 
      at hudson.maven.MavenModule.chooseMoreRelevantModule(MavenModule.java:632) 
      at hudson.maven.MavenModule.buildDependencyGraph(MavenModule.java:515) 
      at hudson.model.DependencyGraph.build(DependencyGraph.java:95) 
      at jenkins.model.Jenkins.rebuildDependencyGraph(Jenkins.java:3816) 
      at jenkins.model.Jenkins$20.run(Jenkins.java:2742) 
      at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169) 
      at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282) 
      at jenkins.model.Jenkins$8.runTask(Jenkins.java:924) 
      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(Unknown Source) 
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
      at java.lang.Thread.run(Unknown Source)
      ```
      

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            • Assignee:
              fbelzunc Félix Belzunce Arcos
              Reporter:
              fbelzunc Félix Belzunce Arcos
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