[...]

No conditional flags passed
from available:
--with   :	
--without:	 tests
Available branches: master
Searching for tag auto/ti/perl-XML-TreeBuilder-5.4-1...
Searching for tag auto/ti/perl-XML-TreeBuilder-5_4-1...
--2018-04-14 14:34:20--  http://distfiles.pld-linux.org/distfiles/by-md5/b/f/bf2d9102b62516f6e76c248acb9e8a2c/XML-TreeBuilder-5.4.tar.gz
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: 13785 (13K) [application/x-gzip]
Saving to: 'XML-TreeBuilder-5.4.tar.gz'
     0K .......... ...                                        100%  300M=0s
2018-04-14 14:34:20 (300 MB/s) - 'XML-TreeBuilder-5.4.tar.gz' saved [13785/13785]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/perl-XML-TreeBuilder-5.4-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 3355fd3... - updated to 5.4
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	
--without:	 tests
Writing git revision for tag auto/ti/perl-XML-TreeBuilder-5.4-1
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.37126
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf XML-TreeBuilder-5.4
Begin-TLD-Builder-Info
Build-Time: user:0.69s sys:0.12s real:2.41s (faults io:0 non-io:74221)
Files queued for ftp:
     19507 perl-XML-TreeBuilder-5.4-1.src.rpm
       196 perl-XML-TreeBuilder-5.4-1.src.rpm.uploadinfo
End-TLD-Builder-Info