2019-09-21 12:50:00,124 [INFO] {29797} 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
2019-09-21 13:20:28,437 [INFO] {30152} 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/1258/311258/local/work/tasks/1044/311044/R-rlang-0.4.0-3.fc31.src.rpm)  Config(f31-build-114742-34457)
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 R-rlang-0.4.0-3.fc31.src.rpm
Start: build setup for R-rlang-0.4.0-3.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/1258/311258/local/work/tasks/1044/311044/R-rlang-0.4.0-3.fc31.src.rpm) Config(f31-build-114742-34457) 2 minutes 55 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-114742-34457/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-114742-34457/root/ --setopt=install_weak_deps=0 /var/lib/mock/f31-build-114742-34457/root//builddir/build/SRPMS/R-rlang-0.4.0-3.fc31.src.rpm --setopt=tsflags=nocontexts
Last metadata expiration check: 0:00:15 ago on Sat 21 Sep 2019 12:52:28 PM EDT.
Error: 
 Problem 1: conflicting requests
  - nothing provides R(fansi) needed by R-pillar-1.4.2-3.fc31.noarch
  - nothing provides R(vctrs) needed by R-pillar-1.4.2-3.fc31.noarch
  - nothing provides R(rlang) >= 0.3.0 needed by R-pillar-1.4.2-3.fc31.noarch
 Problem 2: package R-rmarkdown-1.10-4.1.riscv64.fc29.noarch requires R-stringr >= 1.2.0, but none of the providers can be installed
  - conflicting requests
  - nothing provides R(glue) >= 1.2.0 needed by R-stringr-1.4.0-3.fc31.noarch