[...]

Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/postfix-3.8.1-1.src.rpm
real 0.27
user 0.24
sys 0.01
exit status 0
Writing package revision
Already up to date.
warning: line 82: It's not recommended to have unversioned Obsoletes: Obsoletes:	smtpdaemon
warning: Macro expanded in comment on line 413: %{_sysconfdir}/postfix/regexp_table
warning: Macro expanded in comment on line 418: %{_sysconfdir}/postfix/*.db
No conditional flags passed
from available:
--with   :	
--without:	 cdb epoll ldap lmdb mysql pgsql sasl sqlite ssl
Available branches: TLD-2018 master postfix-3.5
postfix-3.8.1.tar.gz having proper md5sum already exists
./builder[2756]: ulimit: exceeds allowable limit
warning: line 82: It's not recommended to have unversioned Obsoletes: Obsoletes:	smtpdaemon
warning: Macro expanded in comment on line 413: %{_sysconfdir}/postfix/regexp_table
warning: Macro expanded in comment on line 418: %{_sysconfdir}/postfix/*.db
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/postfix-3.8.1-1.src.rpm
real 0.27
user 0.23
sys 0.02
warning: line 82: It's not recommended to have unversioned Obsoletes: Obsoletes:	smtpdaemon
warning: Macro expanded in comment on line 413: %{_sysconfdir}/postfix/regexp_table
warning: Macro expanded in comment on line 418: %{_sysconfdir}/postfix/*.db
Writing git revision for tag tld/postfix-3.8.1-1
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:1.88s sys:1.11s real:5.65s (faults io:95 non-io:358660)
Files queued for ftp:
   4877790 postfix-3.8.1-1.src.rpm
       185 postfix-3.8.1-1.src.rpm.uploadinfo
End-TLD-Builder-Info