[...]

No conditional flags passed
from available:
--with   :	 gtk3
--without:	 gtk2
Available branches: master
Searching for tag auto/ti/lxtask-0.1.7-1...
Searching for tag auto/ti/lxtask-0_1_7-1...
--2016-04-20 08:50:34--  http://df.tld-linux.org/distfiles/by-md5/e/b/eb2ad374e97c317e2f74d47b1e582303/lxtask-0.1.7.tar.xz
Resolving df.tld-linux.org (df.tld-linux.org)... 46.4.78.55
Connecting to df.tld-linux.org (df.tld-linux.org)|46.4.78.55|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 137152 (134K) [application/x-xz]
Saving to: 'lxtask-0.1.7.tar.xz'
     0K .......... .......... .......... .......... .......... 37% 1.53M 0s
    50K .......... .......... .......... .......... .......... 74% 4.22M 0s
   100K .......... .......... .......... ...                  100% 5.89M=0.05s
2016-04-20 08:50:34 (2.66 MB/s) - 'lxtask-0.1.7.tar.xz' saved [137152/137152]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/lxtask-0.1.7-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	 gtk3
--without:	 gtk2
Writing git revision for tag auto/ti/lxtask-0.1.7-1
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.71904
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf lxtask-0.1.7
Begin-PLD-Builder-Info
Build-Time: user:2.78s sys:1.49s real:6.68s (faults io:1 non-io:80319)
Files queued for ftp:
    141551 lxtask-0.1.7-1.src.rpm
       184 lxtask-0.1.7-1.src.rpm.uploadinfo
End-PLD-Builder-Info