2019-08-14 01:36:20,907 [INFO] {31549} 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
2019-08-14 02:05:14,830 [INFO] {32175} 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/2221/262221/local/work/tasks/2060/262060/rubygem-cairo-1.16.4-2.fc31.src.rpm)  Config(f31-build-89163-32044)
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 rubygem-cairo-1.16.4-2.fc31.src.rpm
Start: build setup for rubygem-cairo-1.16.4-2.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/2221/262221/local/work/tasks/2060/262060/rubygem-cairo-1.16.4-2.fc31.src.rpm) Config(f31-build-89163-32044) 2 minutes 26 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-89163-32044/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-89163-32044/root/ --setopt=install_weak_deps=0 /var/lib/mock/f31-build-89163-32044/root//builddir/build/SRPMS/rubygem-cairo-1.16.4-2.fc31.src.rpm --setopt=tsflags=nocontexts
Last metadata expiration check: 0:00:17 ago on Wed 14 Aug 2019 01:38:59 AM EDT.
Error: 
 Problem: conflicting requests
  - nothing provides rubygem(cairo-gobject) >= 3.3.6 needed by rubygem-poppler-3.3.6-1.fc31.noarch