Ok, it looks like this particular job is building from stable/essex branch.
Commencing build of Revision b83b786d711b5481bd6677c02e13978379bc7a94 (origin/stable/essex) Checking out Revision b83b786d711b5481bd6677c02e13978379bc7a94 (origin/stable/essex)
Will fix the Jenkins job.
Ok, it looks like this particular job is building from stable/essex branch.
Commencing build of Revision b83b786d711b548 1bd6677c02e1397 8379bc7a94 (origin/ stable/ essex) 1bd6677c02e1397 8379bc7a94 (origin/ stable/ essex)
Checking out Revision b83b786d711b548
Will fix the Jenkins job.