[...]

QL_10. 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.79258
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf postgresql-10.6
Begin-TLD-Builder-Info
Build-Time: user:1.44s sys:0.18s real:3.27s (faults io:0 non-io:212049)
Files queued for ftp:
  20328217 postgresql-10-10.6-3.src.rpm
       190 postgresql-10-10.6-3.src.rpm.uploadinfo
End-TLD-Builder-Info