[...]

No conditional flags passed
from available:
--with   :	
--without:	 tests
Available branches: AC-branch RA-branch master
Searching for tag auto/ti/perl-YAML-1.26-1...
Searching for tag auto/ti/perl-YAML-1_26-1...
--2019-06-01 22:49:21--  http://distfiles.pld-linux.org/by-md5/e/6/e6005ca390f4fcfd714f9e887b9fe204/YAML-1.26.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: 86698 (85K) [application/x-gzip]
Saving to: 'YAML-1.26.tar.gz'
     0K .......... .......... .......... .......... .......... 59%  581K 0s
    50K .......... .......... .......... ....                 100% 57.7M=0.09s
2019-06-01 22:49:22 (978 KB/s) - 'YAML-1.26.tar.gz' saved [86698/86698]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/perl-YAML-1.26-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 tests
Writing git revision for tag auto/ti/perl-YAML-1.26-1
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.12664
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf YAML-1.26
Begin-TLD-Builder-Info
Build-Time: user:0.75s sys:0.12s real:2.36s (faults io:0 non-io:88807)
Files queued for ftp:
     92056 perl-YAML-1.26-1.src.rpm
       186 perl-YAML-1.26-1.src.rpm.uploadinfo
End-TLD-Builder-Info