[...]

No conditional flags passed
from available:
--with   :	
--without:	 doc tests
Available branches: master rake
Searching for tag auto/ti/ruby-rake-10.0.4-5...
Searching for tag auto/ti/ruby-rake-10_0_4-5...
--2018-02-21 14:15:52--  http://distfiles.pld-linux.org/distfiles/by-md5/5/1/510fad70ab126fad98aa3707eed7c417/rake-10.0.4.gem
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: 120320 (118K) [application/octet-stream]
Saving to: 'rake-10.0.4.gem'
     0K .......... .......... .......... .......... .......... 42% 1.20M 0s
    50K .......... .......... .......... .......... .......... 85% 2.47M 0s
   100K .......... .......                                    100% 25.4M=0.06s
2018-02-21 14:15:52 (1.87 MB/s) - 'rake-10.0.4.gem' saved [120320/120320]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/ruby-rake-10.0.4-5.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 doc tests
Writing git revision for tag auto/ti/ruby-rake-10.0.4-5
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.906
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf rake-10.0.4
Begin-TLD-Builder-Info
Build-Time: user:0.90s sys:0.27s real:2.46s (faults io:0 non-io:80675)
Files queued for ftp:
    123785 ruby-rake-10.0.4-5.src.rpm
       188 ruby-rake-10.0.4-5.src.rpm.uploadinfo
End-TLD-Builder-Info