2019-09-01 16:58:36,546 [INFO] {27326} 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 17:04:54,222 [INFO] {27736} 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/8432/288432/local/work/tasks/8321/288321/xpra-2.5.3-1.fc31.src.rpm)  Config(f31-build-101719-33420)
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 xpra-2.5.3-1.fc31.src.rpm
Start: build setup for xpra-2.5.3-1.fc31.src.rpm
ERROR: Exception(/tmp/koji/tasks/8432/288432/local/work/tasks/8321/288321/xpra-2.5.3-1.fc31.src.rpm) Config(f31-build-101719-33420) 0 minutes 18 seconds
INFO: Results and/or logs in: /var/lib/mock/f31-build-101719-33420/result
ERROR: Command failed: 
 # /usr/bin/dnf builddep --installroot /var/lib/mock/f31-build-101719-33420/root/ --setopt=install_weak_deps=0 /var/lib/mock/f31-build-101719-33420/root//builddir/build/SRPMS/xpra-2.5.3-1.fc31.src.rpm
Last metadata expiration check: 0:00:03 ago on Sun Sep  1 16:58:59 2019.
Package pkgconf-1.6.3-2.fc31.riscv64 is already installed.
Error: 
 Problem: conflicting requests
  - nothing provides /usr/bin/node needed by uglify-js-2.8.22-7.fc31.noarch
  - nothing provides nodejs(engine) >= 0.8.0 needed by uglify-js-2.8.22-7.fc31.noarch