INFO: mock.py version 1.4.16 starting (python version = 3.7.4)...
Start: init plugins
INFO: selinux disabled
Finish: init plugins
Start: run
INFO: Start(/var/tmp/tnef/tnef-1.4.10-5.fc30.art.src.rpm)  Config(fedora-21-i386)
Start: clean chroot
Finish: clean chroot
Start: chroot init
INFO: calling preinit hooks
INFO: enabled root cache
INFO: root cache aged out! cache will be rebuilt
INFO: enabled yum cache
Start: cleaning yum metadata
Finish: cleaning yum metadata
INFO: enabled HW Info plugin
Mock Version: 1.4.16
INFO: Mock Version: 1.4.16
Start: yum install
Finish: yum install
Start: creating root cache
Finish: creating root cache
Finish: chroot init
INFO: Installed packages:
Start: build phase for tnef-1.4.10-5.fc30.art.src.rpm
Start: build setup for tnef-1.4.10-5.fc30.art.src.rpm
Finish: build setup for tnef-1.4.10-5.fc30.art.src.rpm
Start: rpmbuild tnef-1.4.10-5.fc30.art.src.rpm
Start: Outputting list of installed packages
Finish: Outputting list of installed packages
ERROR: Exception(/var/tmp/tnef/tnef-1.4.10-5.fc30.art.src.rpm) Config(fedora-21-i386) 2 minutes 12 seconds
INFO: Results and/or logs in: /var/lib/mock/fedora-21-i386/result
ERROR: Command failed: 
 # /usr/bin/systemd-nspawn -q -M 48915788a8c34bf6b4234dc89f4732b3 -D /var/lib/mock/fedora-21-i386/root -a --capability=cap_ipc_lock --bind=/tmp/mock-resolv.g541fp99:/etc/resolv.conf --setenv=TERM=vt100 --setenv=SHELL=/bin/bash --setenv=HOME=/builddir --setenv=HOSTNAME=mock --setenv=PATH=/usr/bin:/bin:/usr/sbin:/sbin --setenv=PROMPT_COMMAND=printf "\033]0;<mock-chroot>\007" --setenv=PS1=<mock-chroot> \s-\v\$  --setenv=LANG=en_US.UTF-8 -u mockbuild bash --login -c /usr/bin/rpmbuild -bb --target i686 --nodeps /builddir/build/SPECS/tnef-art.spec