[...]

warning: Macro expanded in comment on line 188: %{_libdir}/golang/src/libcap
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libcap-2.49-1.src.rpm
real 0.06
user 0.04
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 186: %{_datadir}/gocode/src/kernel.org/pub/linux/libs/security/libcap
warning: Macro expanded in comment on line 188: %{_libdir}/golang/src/libcap
No conditional flags passed
from available:
--with   :	 golang
--without:	
Available branches: AC-branch LINUX_2_3 RA-branch master
libcap-2.49.tar.xz having proper md5sum already exists
./builder[2756]: ulimit: exceeds allowable limit
warning: Macro expanded in comment on line 186: %{_datadir}/gocode/src/kernel.org/pub/linux/libs/security/libcap
warning: Macro expanded in comment on line 188: %{_libdir}/golang/src/libcap
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libcap-2.49-1.src.rpm
real 0.05
user 0.04
sys 0.01
warning: Macro expanded in comment on line 186: %{_datadir}/gocode/src/kernel.org/pub/linux/libs/security/libcap
warning: Macro expanded in comment on line 188: %{_libdir}/golang/src/libcap
Writing git revision for tag tld/libcap-2.49-1
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:0.77s sys:0.60s real:2.64s (faults io:0 non-io:113442)
Files queued for ftp:
    151435 libcap-2.49-1.src.rpm
       183 libcap-2.49-1.src.rpm.uploadinfo
End-TLD-Builder-Info