Issue

After migrating to CloudBees Jenkins Enterprise from Jenkins some Build Pipeline jobs do not load. The following stack trace is shown:

java.lang.ClassCastException: java.lang.Integer cannot be cast to hudson.model.Action
  at hudson.model.Run.onLoad(Run.java:340)
  at hudson.model.RunMap.retrieve(RunMap.java:219)
  at hudson.model.RunMap.retrieve(RunMap.java:56)
  at jenkins.model.lazy.AbstractLazyLoadRunMap.load(AbstractLazyLoadRunMap.java:690)
  at jenkins.model.lazy.AbstractLazyLoadRunMap.load(AbstractLazyLoadRunMap.java:652)
  at jenkins.model.lazy.AbstractLazyLoadRunMap.search(AbstractLazyLoadRunMap.java:382)
  at jenkins.model.lazy.LazyLoadRunMapEntrySet$1.next(LazyLoadRunMapEntrySet.java:74)
  at jenkins.model.lazy.LazyLoadRunMapEntrySet$1.next(LazyLoadRunMapEntrySet.java:63)
  at java.util.AbstractMap$2$1.next(AbstractMap.java:385)

Environment

• CloudBees Jenkins Enterprise
• Build Pipeline Plugin >= v1.4.6

Resolution

Downgrade the Build Pipeline Plugin to v1.4.5 as a workaround to avoid this issue.