INFO: mock.py version 1.4.11 starting (python version = 3.6.6)...
Start: init plugins
INFO: tmpfs initialized
INFO: selinux disabled
Finish: init plugins
Start: run
INFO: Start(/var/tmp/nanopb/nanopb-0.3.9.1-5.fc27.art.src.rpm)  Config(epel-6-i386)
Start: clean chroot
Finish: clean chroot
Start: chroot init
INFO: mounting tmpfs at /var/lib/mock/epel-6-i386/root.
INFO: calling preinit hooks
INFO: enabled root cache
Start: unpacking root cache
Finish: unpacking root cache
INFO: enabled yum cache
Start: cleaning yum metadata
Finish: cleaning yum metadata
INFO: enabled HW Info plugin
Mock Version: 1.4.11
INFO: Mock Version: 1.4.11
Start: yum update
Finish: yum update
Finish: chroot init
Start: build phase for nanopb-0.3.9.1-5.fc27.art.src.rpm
Start: build setup for nanopb-0.3.9.1-5.fc27.art.src.rpm
ERROR: Exception(/var/tmp/nanopb/nanopb-0.3.9.1-5.fc27.art.src.rpm) Config(epel-6-i386) 0 minutes 4 seconds
INFO: Results and/or logs in: /var/lib/mock/epel-6-i386/result
INFO: unmounting tmpfs.
ERROR: Command failed: 
 # /usr/bin/systemd-nspawn -q -M 311055cf04af471fb5a10ce57b8f9f70 -D /var/lib/mock/epel-6-i386/root -a --bind=/tmp/mock-resolv.s6w4fw5m:/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 /bin/rpm -Uvh --nodeps /builddir/build/originals/nanopb-0.3.9.1-5.fc27.art.src.rpm