2019-07-31 12:31:49,023 [INFO] {15385} 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
2019-07-31 12:37:57,243 [INFO] {15682} 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/3767/213767/local/work/tasks/3532/213532/erlang-riak_ensemble-2.1.9-4.fc31.src.rpm)  Config(f31-build-63487-29353)
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 erlang-riak_ensemble-2.1.9-4.fc31.src.rpm
Start: build setup for erlang-riak_ensemble-2.1.9-4.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/3767/213767/local/work/tasks/3532/213532/erlang-riak_ensemble-2.1.9-4.fc31.src.rpm) Config(f31-build-63487-29353) 0 minutes 17 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-63487-29353/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-63487-29353/root/ /var/lib/mock/f31-build-63487-29353/root//builddir/build/SRPMS/erlang-riak_ensemble-2.1.9-4.fc31.src.rpm
Last metadata expiration check: 0:00:02 ago on Wed 31 Jul 2019 12:38:08 PM UTC.
Error: 
 Problem: conflicting requests
  - nothing provides erlang(erl_nif_version) = 2.13 needed by erlang-eleveldb-1:2.0.35-1.fc30.riscv64