2018-12-09 02:30:12,259 [INFO] {26585} koji.build.buildroot:487 Running mock as kojibuilder INFO: mock.py version 1.4.13 starting (python version = 3.7.1)... Start: init plugins INFO: selinux disabled Finish: init plugins Start: run Start: clean chroot Finish: clean chroot Start: chroot init INFO: calling preinit hooks INFO: enabled HW Info plugin Mock Version: 1.4.13 INFO: Mock Version: 1.4.13 Start: dnf install ERROR: Command failed: # /usr/bin/dnf --installroot /var/lib/mock/f30-build-40748-22842/root/ --setopt=install_weak_deps=0 groupinstall build Unable to detect release version (use '--releasever' to specify release version) Failed to synchronize cache for repo 'build', ignoring this repo. Warning: Module or Group 'build' does not exist. Error: Nothing to do.