[...]

No conditional flags passed
from available:
--with   :	 tests
--without:	
Available branches: master
Searching for tag auto/ti/ruby-minitest-4.7.5-1...
Searching for tag auto/ti/ruby-minitest-4_7_5-1...
--2018-02-23 09:21:38--  http://distfiles.pld-linux.org/distfiles/by-md5/b/e/be309582bddb3eb5be9d4fe34bb63a0f/minitest-4.7.5.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: 57856 (56K) [application/octet-stream]
Saving to: 'minitest-4.7.5.gem'
     0K .......... .......... .......... .......... .......... 88% 1.21M 0s
    50K ......                                                100% 32.6M=0.04s
2018-02-23 09:21:38 (1.36 MB/s) - 'minitest-4.7.5.gem' saved [57856/57856]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/ruby-minitest-4.7.5-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at afb31df... - up to 4.7.5
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	 tests
--without:	
Writing git revision for tag auto/ti/ruby-minitest-4.7.5-1
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.99608
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf minitest-4.7.5
Begin-TLD-Builder-Info
Build-Time: user:0.90s sys:0.25s real:2.94s (faults io:0 non-io:74937)
Files queued for ftp:
     58852 ruby-minitest-4.7.5-1.src.rpm
       191 ruby-minitest-4.7.5-1.src.rpm.uploadinfo
End-TLD-Builder-Info