[...]

are set to -j2
Already up to date.
Available branches: AC-branch RA-branch master
libsmi-0.5.0.tar.gz having proper md5sum already exists
./builder[2756]: ulimit: exceeds allowable limit
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libsmi-0.5.0-2.src.rpm
real 0.23
user 0.21
sys 0.01
Writing git revision for tag tld/libsmi-0.5.0-2
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:1.10s sys:0.39s real:5.37s (faults io:0 non-io:167497)
Files queued for ftp:
   4802119 libsmi-0.5.0-2.src.rpm
       184 libsmi-0.5.0-2.src.rpm.uploadinfo
End-TLD-Builder-Info