[...]

Building target platforms: x86_64-linux
Building for target x86_64-linux
Wrote: /home/users/builder/rpm/SRPMS/bluez-5.73-1.src.rpm
RPM build warnings:
    Macro expanded in comment on line 81: %{_lib} (see cups.spec)
real 0.10
user 0.08
sys 0.01
exit status 0
Writing package revision
builder: SMP make flags are set to -j2
Already up to date.
warning: Macro expanded in comment on line 81: %{_lib} (see cups.spec)
No conditional flags passed
from available:
--with   :	
--without:	 deprecated static_libs systemd
Available branches: bluez-4 master
bluez-5.73.tar.xz having proper md5sum already exists
./builder[2756]: ulimit: unlimited exceeds allowable coredump(blocks) limit
warning: Macro expanded in comment on line 81: %{_lib} (see cups.spec)
Building target platforms: x86_64-linux
Building for target x86_64-linux
Wrote: /home/users/builder/rpm/SRPMS/bluez-5.73-1.src.rpm
RPM build warnings:
    Macro expanded in comment on line 81: %{_lib} (see cups.spec)
real 0.12
user 0.10
sys 0.02
warning: Macro expanded in comment on line 81: %{_lib} (see cups.spec)
Writing git revision for tag tld/bluez-5.73-1
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:1.61s sys:0.53s real:6.02s (faults io:3 non-io:293860)
Files queued for ftp:
   2425309 bluez-5.73-1.src.rpm
       182 bluez-5.73-1.src.rpm.uploadinfo
End-TLD-Builder-Info