[...]

 16250K .......... .......... .......... .......... .......... 98%  389M 0s
 16300K .......... .......... .......... .......... .......... 98% 75.7M 0s
 16350K .......... .......... .......... .......... .......... 98% 92.5M 0s
 16400K .......... .......... .......... .......... .......... 99%  312M 0s
 16450K .......... .......... .......... .......... .......... 99% 95.9M 0s
 16500K .......... .......... .......... .......... .......... 99% 93.7M 0s
 16550K .......... .......... .......... .......... ....      100%  349M=0.4s
2018-01-07 17:35:34 (36.3 MB/s) - 'Python-3.6.4.tar.xz' saved [16992824/16992824]
--2018-01-07 17:35:35--  http://distfiles.pld-linux.org/distfiles/by-md5/d/b/db706fbe6de467c6e4c97c675eddf29a/nonexistent_user.patch
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: 2123 (2.1K) [application/octet-stream]
Saving to: 'nonexistent_user.patch'
     0K ..                                                    100%  427M=0s
2018-01-07 17:35:35 (427 MB/s) - 'nonexistent_user.patch' saved [2123/2123]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/python3-3.6.4-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 380ee8d... - up to 3.6.4
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	 info verbose_tests
--without:	 system_mpdecimal tests tkinter
Writing git revision for tag auto/ti/python3-3.6.4-1
On detached HEAD. Use -r BRANCHNAME to override
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.39000
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf Python-3.6.4
Begin-TLD-Builder-Info
Build-Time: user:1.24s sys:0.28s real:4.63s (faults io:0 non-io:205334)
Files queued for ftp:
  17031624 python3-3.6.4-1.src.rpm
       185 python3-3.6.4-1.src.rpm.uploadinfo
End-TLD-Builder-Info