2018-12-02 17:37:56,961 [INFO] {32360} koji.build.buildroot:440 Running mock as kojibuilder
INFO: mock.py version 1.4.13 starting (python version = 3.7.0)...
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-35287-19634/root/ --setopt=install_weak_deps=0 groupinstall appliance-build
Unable to detect release version (use '--releasever' to specify release version)
Last metadata expiration check: 0:03:08 ago on Sun Dec  2 17:38:06 2018.
No match for group package "grub"
Error: 
 Problem: package appliance-tools-009.0-4.fc30.noarch requires xfsprogs, but none of the providers can be installed
  - conflicting requests
  - nothing provides libicui18n.so.61()(64bit) needed by xfsprogs-4.17.0-3.fc29.riscv64
  - nothing provides libicuuc.so.61()(64bit) needed by xfsprogs-4.17.0-3.fc29.riscv64
  - nothing provides libicudata.so.61()(64bit) needed by xfsprogs-4.17.0-3.fc29.riscv64