2019-08-14 04:10:25,336 [INFO] {17369} 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
Finish: dnf install
Finish: chroot init
INFO: Installed packages:
Finish: run
2019-08-14 04:35:36,253 [INFO] {17743} 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
INFO: Start(/tmp/koji/tasks/2887/262887/local/work/tasks/2723/262723/v4l-utils-1.16.5-4.fc31.src.rpm)  Config(f31-build-89666-32092)
Start: chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 1.4.14
INFO: Mock Version: 1.4.14
Finish: chroot init
Start: build phase for v4l-utils-1.16.5-4.fc31.src.rpm
Start: build setup for v4l-utils-1.16.5-4.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/2887/262887/local/work/tasks/2723/262723/v4l-utils-1.16.5-4.fc31.src.rpm) Config(f31-build-89666-32092) 2 minutes 41 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-89666-32092/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-89666-32092/root/ --setopt=install_weak_deps=0 /var/lib/mock/f31-build-89666-32092/root//builddir/build/SRPMS/v4l-utils-1.16.5-4.fc31.src.rpm --setopt=tsflags=nocontexts
Last metadata expiration check: 0:00:14 ago on Wed 14 Aug 2019 04:13:04 AM EDT.
No matching package to install: 'clang'
Not all dependencies satisfied
Error: Some packages could not be found.