2019-08-14 04:39:59,045 [INFO] {12715} 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
2019-08-14 04:46:41,342 [INFO] {13009} 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/1956/261956/local/work/tasks/1812/261812/uim-1.8.8-3.fc31.src.rpm)  Config(f31-build-88970-32022)
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 uim-1.8.8-3.fc31.src.rpm
Start: build setup for uim-1.8.8-3.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/1956/261956/local/work/tasks/1812/261812/uim-1.8.8-3.fc31.src.rpm) Config(f31-build-88970-32022) 0 minutes 22 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-88970-32022/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-88970-32022/root/ /var/lib/mock/f31-build-88970-32022/root//builddir/build/SRPMS/uim-1.8.8-3.fc31.src.rpm
Last metadata expiration check: 0:00:02 ago on Wed 14 Aug 2019 04:46:56 AM UTC.
No matching package to install: 'libgcroots-devel'
Not all dependencies satisfied
Error: Some packages could not be found.