2019-08-31 19:13:59,942 [INFO] {8349} koji.build.buildroot:440 Running mock as kojibuilder
INFO: mock.py version 1.4.9 starting (python version = 3.6.4)...
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: 1.4.9
INFO: Mock Version: 1.4.9
Start: dnf install
Finish: dnf install
Finish: chroot init
INFO: Installed packages:
Finish: run
2019-08-31 19:21:59,009 [INFO] {8723} koji.build.buildroot:440 Running mock as kojibuilder
INFO: mock.py version 1.4.9 starting (python version = 3.6.4)...
Start: init plugins
INFO: selinux disabled
Finish: init plugins
Start: run
INFO: Start(/tmp/koji/tasks/1107/281107/local/work/tasks/970/280970/pwmd-3.0.18-11.fc31.src.rpm)  Config(f31-build-98660-33061)
Start: chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 1.4.9
INFO: Mock Version: 1.4.9
Finish: chroot init
Start: build phase for pwmd-3.0.18-11.fc31.src.rpm
Start: build setup for pwmd-3.0.18-11.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/1107/281107/local/work/tasks/970/280970/pwmd-3.0.18-11.fc31.src.rpm) Config(f31-build-98660-33061) 0 minutes 19 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-98660-33061/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-98660-33061/root/ /var/lib/mock/f31-build-98660-33061/root//builddir/build/SRPMS/pwmd-3.0.18-11.fc31.src.rpm
Last metadata expiration check: 0:00:03 ago on Sat 31 Aug 2019 07:22:11 PM UTC.
No matching package to install: 'libubsan'
Not all dependencies satisfied
Error: Some packages could not be found.