2019-08-31 17:31:48,724 [INFO] {15992} 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
2019-08-31 17:37:58,990 [INFO] {16390} 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/712/280712/local/work/tasks/590/280590/polymake-3.4-6.fc31.src.rpm)  Config(f31-build-98362-33041)
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 polymake-3.4-6.fc31.src.rpm
Start: build setup for polymake-3.4-6.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/712/280712/local/work/tasks/590/280590/polymake-3.4-6.fc31.src.rpm) Config(f31-build-98362-33041) 0 minutes 40 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-98362-33041/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-98362-33041/root/ --setopt=install_weak_deps=0 /var/lib/mock/f31-build-98362-33041/root//builddir/build/SRPMS/polymake-3.4-6.fc31.src.rpm
Last metadata expiration check: 0:00:03 ago on Sat Aug 31 17:32:08 2019.
No matching package to install: 'Singular-devel'
Not all dependencies satisfied
Error: Some packages could not be found.