[...]

builder: SMP make flags are set to -j2
Cloning into 'xorg-lib-libFS'...
From git://git.pld-linux.org/packages/xorg-lib-libFS
 * [new ref]         refs/notes/commits -> refs/notes/commits
aef5b7caa02b48f71e1219fa17fd1179e66682d5
Already on 'master'
Your branch is up-to-date with 'origin/master'.
Already up-to-date.
Available branches: master
Searching for tag auto/ti/xorg-lib-libFS-1.0.7-1...
Searching for tag auto/ti/xorg-lib-libFS-1_0_7-1...
--2015-05-14 08:49:33--  http://distfiles.pld-linux.org/distfiles/by-md5/d/7/d79d9fe2aa55eb0f69b1a4351e1368f7/libFS-1.0.7.tar.bz2
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: 315569 (308K) [application/x-bzip2]
Saving to: 'libFS-1.0.7.tar.bz2'
     0K .......... .......... .......... .......... .......... 16%  813K 0s
    50K .......... .......... .......... .......... .......... 32% 1.54M 0s
   100K .......... .......... .......... .......... .......... 48% 1.60M 0s
   150K .......... .......... .......... .......... .......... 64% 1.72M 0s
   200K .......... .......... .......... .......... .......... 81% 10.5M 0s
   250K .......... .......... .......... .......... .......... 97% 1.94M 0s
   300K ........                                              100% 3.36M=0.2s
2015-05-14 08:49:33 (1.63 MB/s) - 'libFS-1.0.7.tar.bz2' saved [315569/315569]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/xorg-lib-libFS-1.0.7-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/xorg-lib-libFS-1.0.7-1
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.65165
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libFS-1.0.7
Begin-PLD-Builder-Info
Build-Time: user:2.69s sys:1.19s real:9.94s (faults io:0 non-io:194398)
Files queued for ftp:
    321093 xorg-lib-libFS-1.0.7-1.src.rpm
       192 xorg-lib-libFS-1.0.7-1.src.rpm.uploadinfo
End-PLD-Builder-Info