[...]

No conditional flags passed
from available:
--with   :	 tests
--without:	
Available branches: AC-branch RA-branch master
Searching for tag auto/ti/perl-libwww-6.15-1...
Searching for tag auto/ti/perl-libwww-6_15-1...
--2017-07-04 20:06:43--  http://distfiles.pld-linux.org/distfiles/by-md5/6/8/6888c9d8728cd6f3ea3c9754461c9f94/libwww-perl-6.15.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: 141936 (139K) [application/x-gzip]
Saving to: 'libwww-perl-6.15.tar.gz'
     0K .......... .......... .......... .......... .......... 36% 1.02M 0s
    50K .......... .......... .......... .......... .......... 72% 2.03M 0s
   100K .......... .......... .......... ........             100%  243M=0.07s
2017-07-04 20:06:43 (1.87 MB/s) - 'libwww-perl-6.15.tar.gz' saved [141936/141936]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/perl-libwww-6.15-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	 tests
--without:	
Writing git revision for tag auto/ti/perl-libwww-6.15-1
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.88564
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libwww-perl-6.15
Begin-TLD-Builder-Info
Build-Time: user:0.90s sys:0.28s real:3.13s (faults io:0 non-io:89944)
Files queued for ftp:
    148480 perl-libwww-6.15-1.src.rpm
       188 perl-libwww-6.15-1.src.rpm.uploadinfo
End-TLD-Builder-Info