2019-08-16 05:54:09,796 [INFO] {1057} koji.build.buildroot:505 Running mock as kojibuilder
INFO: mock.py version 1.4.14 starting (python version = 3.7.3)...
Start: init plugins
INFO: selinux enabled
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: 1.4.14
INFO: Mock Version: 1.4.14
Start: dnf install
ERROR: Command failed: 
 # /usr/bin/dnf --installroot /var/lib/mock/f31-build-95588-32679/root/ --setopt=install_weak_deps=0 groupinstall appliance-build --setopt=tsflags=nocontexts
Unable to detect release version (use '--releasever' to specify release version)
Last metadata expiration check: 0:07:39 ago on Fri 16 Aug 2019 05:55:46 AM EDT.
No match for group package "grub"
Error: 
 Problem: package perl-4:5.30.0-442.fc31.riscv64 requires perl-IO-Compress, but none of the providers can be installed
  - conflicting requests
  - nothing provides perl(Compress::Raw::Bzip2) >= 2.087 needed by perl-IO-Compress-2.087-1.fc31.noarch
  - nothing provides perl(Compress::Raw::Zlib) >= 2.087 needed by perl-IO-Compress-2.087-1.fc31.noarch