[...]

  8600K .......... .......... .......... .......... .......... 96% 10.8M 0s
  8650K .......... .......... .......... .......... .......... 96% 11.6M 0s
  8700K .......... .......... .......... .......... .......... 97% 10.9M 0s
  8750K .......... .......... .......... .......... .......... 97% 11.5M 0s
  8800K .......... .......... .......... .......... .......... 98% 11.5M 0s
  8850K .......... .......... .......... .......... .......... 99% 10.8M 0s
  8900K .......... .......... .......... .......... .......... 99% 11.6M 0s
  8950K .......... .......... .......... .........            100% 11.4M=0.8s
2015-07-22 10:40:16 (10.5 MB/s) - 'mailman-2.1.20.tgz' saved [9204867/9204867]
--2015-07-22 10:40:16--  http://df.tld-linux.org/distfiles/by-md5/6/b/6b55f9f8051c76961b84a12ed17fc14f/mailman-man-pages.tar.bz2
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: 5625 (5.5K) [application/x-bzip2]
Saving to: 'mailman-man-pages.tar.bz2'
     0K .....                                                 100% 20.5M=0s
2015-07-22 10:40:16 (20.5 MB/s) - 'mailman-man-pages.tar.bz2' saved [5625/5625]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/mailman-2.1.20-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	 umbrella_hack
--without:	
Writing git revision for tag auto/ti/mailman-2.1.20-1
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.69333
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf mailman-2.1.20
Begin-PLD-Builder-Info
Build-Time: user:6.34s sys:4.65s real:12.01s (faults io:0 non-io:660032)
Files queued for ftp:
   9251817 mailman-2.1.20-1.src.rpm
       186 mailman-2.1.20-1.src.rpm.uploadinfo
End-PLD-Builder-Info