2019-08-09 00:50:19,805 [INFO] {28283} 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
2019-08-09 00:59:02,906 [INFO] {29161} 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/736/240736/local/work/tasks/569/240569/R-XVector-0.24.0-1.fc31.src.rpm)  Config(f31-build-76620-31418)
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 R-XVector-0.24.0-1.fc31.src.rpm
Start: build setup for R-XVector-0.24.0-1.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/736/240736/local/work/tasks/569/240569/R-XVector-0.24.0-1.fc31.src.rpm) Config(f31-build-76620-31418) 0 minutes 18 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-76620-31418/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-76620-31418/root/ /var/lib/mock/f31-build-76620-31418/root//builddir/build/SRPMS/R-XVector-0.24.0-1.fc31.src.rpm
Last metadata expiration check: 0:00:02 ago on Fri 09 Aug 2019 12:59:14 AM UTC.
No matching package to install: 'R-IRanges-devel >= 2.15.12'
No matching package to install: 'R-S4Vectors-devel >= 0.21.23'
Not all dependencies satisfied
Error: Some packages could not be found.