2021-07-26 11:04:49,131 [INFO] {3925950} koji.build.buildroot:540 Running mock as kojibuilder
ERROR: Option --old-chroot has been deprecated. Use --isolation=simple instead.
INFO: mock.py version 2.10 starting (python version = 3.6.8, NVR = mock-2.10-1.el8)...
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: 2.10
INFO: Mock Version: 2.10
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: 2.10
INFO: Mock Version: 2.10
Start: dnf install
ERROR: Command failed: 
 # /usr/bin/dnf --installroot /var/lib/mock/dist-circle8-build-32717-5658/root/ --setopt=deltarpm=False --allowerasing --disableplugin=local --disableplugin=spacewalk groupinstall srpm-build
Unable to detect release version (use '--releasever' to specify release version)
No matches found for the following disable plugin patterns: local, spacewalk
Last metadata expiration check: 0:00:03 ago on Mon Jul 26 11:05:09 2021.
No match for group package "scl-utils-build"
No match for group package "system-release"
No match for group package "srpmproc"
Error: 
 Problem: conflicting requests
  - nothing provides scl-utils-build needed by gcc-toolset-10-build-10.0-0.el8.x86_64
  - nothing provides scl-utils-build >= 20120927-11 needed by gcc-toolset-10-build-10.0-0.el8.x86_64
(try to add '--skip-broken' to skip uninstallable packages)