2019-09-01 07:18:40,951 [INFO] {12097} 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
2019-09-01 07:24:55,879 [INFO] {12296} 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/3457/283457/local/work/tasks/3320/283320/R-tibble-2.1.3-3.fc31.src.rpm)  Config(f31-build-100400-33244)
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-tibble-2.1.3-3.fc31.src.rpm
Start: build setup for R-tibble-2.1.3-3.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/3457/283457/local/work/tasks/3320/283320/R-tibble-2.1.3-3.fc31.src.rpm) Config(f31-build-100400-33244) 0 minutes 19 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-100400-33244/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-100400-33244/root/ /var/lib/mock/f31-build-100400-33244/root//builddir/build/SRPMS/R-tibble-2.1.3-3.fc31.src.rpm
Last metadata expiration check: 0:00:02 ago on Sun 01 Sep 2019 07:25:08 AM UTC.
No matching package to install: 'R-fansi >= 0.4.0'
No matching package to install: 'R-rlang >= 0.3.0'
Not all dependencies satisfied
Error: Some packages could not be found.