[...]

 --without tests
from available:
--with   :	
--without:	 python2 python3 <tests>
Available branches: master
Searching for tag auto/ti/python-PyYAML-5.2-2...
Searching for tag auto/ti/python-PyYAML-5_2-2...
--2020-04-18 19:58:16--  http://distfiles.pld-linux.org/by-md5/4/6/464430ee31d2bcfb2e746158674c7c5c/pyyaml-5.2.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: 164599 (161K) [application/x-gzip]
Saving to: 'pyyaml-5.2.tar.gz'
     0K .......... .......... .......... .......... .......... 31% 1.29M 0s
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2020-04-18 19:58:16 (2.73 MB/s) - 'pyyaml-5.2.tar.gz' saved [164599/164599]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/python-PyYAML-5.2-2.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Building python-PyYAML.spec with the following conditional flags:
 --without tests
from available:
--with   :	
--without:	 python2 python3 <tests>
Writing git revision for tag auto/ti/python-PyYAML-5.2-2
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.12449
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf pyyaml-5.2
Begin-TLD-Builder-Info
Build-Time: user:0.97s sys:0.37s real:11.89s (faults io:228 non-io:95615)
Files queued for ftp:
    170123 python-PyYAML-5.2-2.src.rpm
       189 python-PyYAML-5.2-2.src.rpm.uploadinfo
End-TLD-Builder-Info