2019-09-01 02:43:02,307 [INFO] {998} koji.build.buildroot:440 Running mock as kojibuilder
INFO: mock.py version 1.4.13 starting (python version = 3.7.0)...
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: 1.4.13
INFO: Mock Version: 1.4.13
Start: dnf install
Finish: dnf install
Finish: chroot init
INFO: Installed packages:
Finish: run
2019-09-01 02:48:22,965 [INFO] {1200} koji.build.buildroot:440 Running mock as kojibuilder
INFO: mock.py version 1.4.13 starting (python version = 3.7.0)...
Start: init plugins
INFO: selinux disabled
Finish: init plugins
Start: run
INFO: Start(/tmp/koji/tasks/2569/282569/local/work/tasks/2442/282442/R-scales-1.0.0-4.fc31.src.rpm)  Config(f31-build-99718-33182)
Start: chroot init
INFO: calling preinit hooks
INFO: enabled HW Info plugin
Mock Version: 1.4.13
INFO: Mock Version: 1.4.13
Finish: chroot init
Start: build phase for R-scales-1.0.0-4.fc31.src.rpm
Start: build setup for R-scales-1.0.0-4.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/2569/282569/local/work/tasks/2442/282442/R-scales-1.0.0-4.fc31.src.rpm) Config(f31-build-99718-33182) 0 minutes 18 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-99718-33182/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-99718-33182/root/ --setopt=install_weak_deps=0 /var/lib/mock/f31-build-99718-33182/root//builddir/build/SRPMS/R-scales-1.0.0-4.fc31.src.rpm
Last metadata expiration check: 0:00:03 ago on Sun Sep  1 02:43:12 2019.
Error: 
 Problem: conflicting requests
  - nothing provides R(vctrs) >= 0.2.0 needed by R-hms-0.5.1-1.fc31.noarch
  - nothing provides R(rlang) needed by R-hms-0.5.1-1.fc31.noarch