[...]

  8650K .......... .......... .......... .......... .......... 95%  286M 0s
  8700K .......... .......... .......... .......... .......... 96% 80.2M 0s
  8750K .......... .......... .......... .......... .......... 96% 79.9M 0s
  8800K .......... .......... .......... .......... .......... 97% 79.7M 0s
  8850K .......... .......... .......... .......... .......... 98%  344M 0s
  8900K .......... .......... .......... .......... .......... 98% 80.7M 0s
  8950K .......... .......... .......... .......... .......... 99% 76.7M 0s
  9000K .......... .......... .......... .......... .......... 99% 93.4M 0s
  9050K .......... .......... ...                             100%  409M=0.09s
2018-04-09 11:36:02 (97.4 MB/s) - 'mailman-2.1.23.tgz' saved [9290881/9290881]
--2018-04-09 11:36:02--  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% 1.08G=0s
2018-04-09 11:36:02 (1.08 GB/s) - 'mailman-man-pages.tar.bz2' saved [5625/5625]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/mailman-2.1.23-2.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-2.1.23-2
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.17808
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf mailman-2.1.23
Begin-TLD-Builder-Info
Build-Time: user:1.21s sys:0.36s real:3.17s (faults io:8 non-io:306562)
Files queued for ftp:
   9338520 mailman-2.1.23-2.src.rpm
       186 mailman-2.1.23-2.src.rpm.uploadinfo
End-TLD-Builder-Info