This job seems to be failing due to mock setup issues:
http://jenkins.ovirt.org/job/ovirt-engine-nodejs-modules_4.0_create-rpms-el7-x86_64_created/60/console

10:04:23 ##### Initializing chroot
10:04:23 + /usr/bin/mock --configdir=/home/jenkins/workspace/ovirt-engine-nodejs-modules_4.0_create-rpms-el7-x86_64_created/jenkins/mock_configs --root=epel-7-x86_64-custom --resultdir=/home/jenkins/workspace/ovirt-engine-nodejs-modules_4.0_create-rpms-el7-x86_64_created --init
10:04:24 INFO: mock.py version 1.2.21 starting (python version = 3.5.2)...
10:04:24 ERROR: 'selinux_enable'
10:04:24 Traceback (most recent call last):
10:04:24 File "/usr/sbin/mock", line 844, in <module>
10:04:24 main()
10:04:24 File "/usr/lib/python3.5/site-packages/mockbuild/trace_decorator.py", line 88, in trace
10:04:24 result = func(*args, **kw)
10:04:24 File "/usr/sbin/mock", line 634, in main
10:04:24 buildroot = Buildroot(config_opts, uidManager, state, plugins)
10:04:24 File "/usr/lib/python3.5/site-packages/mockbuild/trace_decorator.py", line 88, in trace
10:04:24 result = func(*args, **kw)
10:04:24 File "/usr/lib/python3.5/site-packages/mockbuild/buildroot.py", line 47, in _init_
10:04:24 self.selinux = (not self.config['plugin_conf']['selinux_enable']
10:04:24 KeyError: 'selinux_enable'
10:04:24 Build step 'Execute shell' marked build as failure

This runs on an FC24 slave that I updated yesterday - maybe that caused the issue.