[...]

o 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.75515
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf postgresql-11.7
Begin-TLD-Builder-Info
Build-Time: user:2.97s sys:2.45s real:8.34s (faults io:40 non-io:199024)
Files queued for ftp:
  19863374 postgresql-11-11.7-3.src.rpm
       190 postgresql-11-11.7-3.src.rpm.uploadinfo
End-TLD-Builder-Info