[...]

Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/tigervnc-1.13.1-1.src.rpm
RPM build warnings:
    line 150: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-server
    line 162: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-utils
real 0.13
user 0.10
sys 0.02
exit status 0
Writing package revision
builder: SMP make flags are set to -j2
fatal: HEAD does not point to a branch
warning: line 150: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-server
warning: line 162: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-utils
No conditional flags passed
from available:
--with   :	
--without:	 h264 systemd
Available branches: master
tigervnc-1.13.1.tar.gz having proper md5sum already exists
./builder[2756]: ulimit: unlimited exceeds allowable coredump(blocks) limit
warning: line 150: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-server
warning: line 162: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-utils
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/tigervnc-1.13.1-1.src.rpm
RPM build warnings:
    line 150: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-server
    line 162: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-utils
real 0.12
user 0.10
sys 0.01
warning: line 150: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-server
warning: line 162: It's not recommended to have unversioned Obsoletes: Obsoletes:	vnc-utils
Writing git revision for tag tld/tigervnc-1.13.1-1
On detached HEAD. Use -r BRANCHNAME to override
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:1.50s sys:0.41s real:4.10s (faults io:3 non-io:256050)
Files queued for ftp:
   2007189 tigervnc-1.13.1-1.src.rpm
       187 tigervnc-1.13.1-1.src.rpm.uploadinfo
End-TLD-Builder-Info