2021-08-16 23:07:25,482 [INFO] {3375893} koji.build.buildroot:541 Running mock as kojibuilder
INFO: mock.py version 2.8 starting (python version = 3.6.8, NVR = mock-2.8-1.el8)...
INFO: Using 'dnf' instead of 'yum' for bootstrap chroot
Start(bootstrap): init plugins
INFO: selinux disabled
Finish(bootstrap): init plugins
Start: init plugins
INFO: selinux disabled
Finish: init plugins
INFO: Signal handler active
Start: run
Start: clean chroot
Finish: clean chroot
Start(bootstrap): chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 2.8
INFO: Mock Version: 2.8
Start(bootstrap): dnf install
Finish(bootstrap): dnf install
Finish(bootstrap): chroot init
Start: chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 2.8
INFO: Mock Version: 2.8
Start: yum install
ERROR: Command failed: 
 # /usr/bin/systemd-nspawn -q -M 5bc66a0297a1423bbc2359f4a7745c89 -D /var/lib/mock/dist-an7-build-26800-14824-bootstrap/root -a --capability=cap_ipc_lock --bind=/tmp/mock-resolv.jr_gxoxf:/etc/resolv.conf --setenv=TERM=vt100 --setenv=SHELL=/bin/bash --setenv=HOME=/var/lib/mock/dist-an7-build-26800-14824/root/installation-homedir --setenv=HOSTNAME=mock --setenv=PATH=/usr/bin:/bin:/usr/sbin:/sbin --setenv=PROMPT_COMMAND=printf "\033]0;<mock-chroot>\007" --setenv=PS1=<mock-chroot> \s-\v\$  --setenv=LANG=C.UTF-8 --setenv=LC_MESSAGES=C.UTF-8 --resolv-conf=off /usr/bin/yum --installroot /var/lib/mock/dist-an7-build-26800-14824/root/ groupinstall srpm-build
Failed to set locale, defaulting to C
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Warning: group srpm-build does not exist.
Maybe run: yum groups mark install (see man yum)
Error: No packages in any requested group available to install or update