[...]

Cloning into 'json-c'...
1466ae7628dc5e24f623f29a3a97d6ed1ccc7c07
Already on 'master'
Your branch is up-to-date with 'origin/master'.
Already up-to-date.
Available branches: master
Searching for tag auto/ti/json-c-0.12.1-1...
Searching for tag auto/ti/json-c-0_12_1-1...
--2017-04-05 12:41:54--  http://distfiles.pld-linux.org/distfiles/by-md5/5/5/55f7853f7d8cf664554ce3fa71bf1c7d/json-c-0.12.1.tar.gz
Resolving distfiles.pld-linux.org (distfiles.pld-linux.org)... 193.239.45.41
Connecting to distfiles.pld-linux.org (distfiles.pld-linux.org)|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 535086 (523K) [application/x-gzip]
Saving to: 'json-c-0.12.1.tar.gz'
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   450K .......... .......... .......... .......... .......... 95%  119M 0s
   500K .......... .......... ..                              100%  129M=0.1s
2017-04-05 12:41:55 (4.48 MB/s) - 'json-c-0.12.1.tar.gz' saved [535086/535086]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/json-c-0.12.1-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/json-c-0.12.1-1
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.82218
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf json-c-0.12.1
Begin-TLD-Builder-Info
Build-Time: user:0.58s sys:0.22s real:2.32s (faults io:0 non-io:82636)
Files queued for ftp:
    540078 json-c-0.12.1-1.src.rpm
       185 json-c-0.12.1-1.src.rpm.uploadinfo
End-TLD-Builder-Info