Description of problem:
Jab grabber fails with
Jan 14 12:14:09 copr-be copr-be.py: Process jobgrab:
Jan 14 12:14:09 copr-be copr-be.py: Traceback (most recent call last):
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/lib64/python2.7/multiprocessing/process.py", line 258, in _bootstrap
Jan 14 12:14:09 copr-be copr-be.py: self.run()
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/share/copr/backend/daemons/job_grab.py", line 155, in run
Jan 14 12:14:09 copr-be copr-be.py: self.load_tasks()
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/share/copr/backend/daemons/job_grab.py", line 145, in load_tasks
Jan 14 12:14:09 copr-be copr-be.py: self.process_action(action)
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/share/copr/backend/daemons/job_grab.py", line 108, in process_action
Jan 14 12:14:09 copr-be copr-be.py: ao.run()
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/share/copr/backend/actions.py", line 177, in run
Jan 14 12:14:09 copr-be copr-be.py: self.handle_delete_build()
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/share/copr/backend/actions.py", line 151, in handle_delete_build
Jan 14 12:14:09 copr-be copr-be.py: username=username, projectname=projectname
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/share/copr/backend/createrepo.py", line 71, in createrepo
Jan 14 12:14:09 copr-be copr-be.py: if get_auto_createrepo_status(front_url, username, projectname):
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/share/copr/backend/helpers.py", line 178, in get_auto_createrepo_status
Jan 14 12:14:09 copr-be copr-be.py: result = client.get_project_details(projectname, username)
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/lib/python2.7/site-packages/copr/client/client.py", line 368, in get_project_details
Jan 14 12:14:09 copr-be copr-be.py: data = self._fetch(url, skip_auth=True)
Jan 14 12:14:09 copr-be copr-be.py: File "/usr/lib/python2.7/site-packages/copr/client/client.py", line 209, in _fetch
Jan 14 12:14:09 copr-be copr-be.py: raise CoprRequestException(output["error"])
Jan 14 12:14:09 copr-be copr-be.py: CoprRequestException: Copr with name MATE-1.8-f20 does not exist.

this is fatal to copr backend