[...]

No conditional flags passed
from available:
--with   :	 natus
--without:	 kde mono mozjs webkit
Available branches: master
Searching for tag auto/ti/libproxy-0.4.11-5...
Searching for tag auto/ti/libproxy-0_4_11-5...
--2015-05-27 07:44:03--  http://distfiles.pld-linux.org/distfiles/by-md5/3/c/3cd1ae2a4abecf44b3f24d6639d2cd84/libproxy-0.4.11.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: 93757 (92K) [application/x-gzip]
Saving to: 'libproxy-0.4.11.tar.gz'
     0K .......... .......... .......... .......... .......... 54%  816K 0s
    50K .......... .......... .......... .......... .         100% 1.30M=0.09s
2015-05-27 07:44:03 (990 KB/s) - 'libproxy-0.4.11.tar.gz' saved [93757/93757]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libproxy-0.4.11-5.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	 natus
--without:	 kde mono mozjs webkit
Writing git revision for tag auto/ti/libproxy-0.4.11-5
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.17095
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libproxy-0.4.11
Begin-PLD-Builder-Info
Build-Time: user:3.25s sys:1.55s real:10.59s (faults io:0 non-io:241976)
Files queued for ftp:
    102135 libproxy-0.4.11-5.src.rpm
       187 libproxy-0.4.11-5.src.rpm.uploadinfo
End-PLD-Builder-Info