00:00:00.735 Building remotely on vm0064.workers-phx.ovirt.org (libvirt phx nested fc26) in workspace /home/jenkins/workspace/vdsm_master_check-patch-fc27-x86_64

After 16 minutes, and it is still stuck in:

00:14:21.914 Start: unpacking root cache

http://jenkins.ovirt.org/job/vdsm_master_check-patch-fc27-x86_64/284/console

I left the build running in case you want to debug it.

00:31:42.803 INFO: mock.py version 1.4.3 starting (python version = 3.6.1)...