[...]

No conditional flags passed
from available:
--with   :	 tests
--without:	
Available branches: master
--2015-07-15 15:11:44--  http://distfiles.pld-linux.org/distfiles/by-md5/f/d/fdd242b3380005dc9a7d2f88e9f66a3a/protobuf-c-1.0.2.tar.gz
Resolving distfiles.pld-linux.org (distfiles.pld-linux.org)... 193.239.45.41
Connecting to distfiles.pld-linux.org (distfiles.pld-linux.org)|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 111228 (109K) [application/x-gzip]
Saving to: 'protobuf-c-1.0.2.tar.gz'
     0K .......... .......... .......... .......... .......... 46%  891K 0s
    50K .......... .......... .......... .......... .......... 92% 1.66M 0s
   100K ........                                              100%  364K=0.1s
2015-07-15 15:11:44 (995 KB/s) - 'protobuf-c-1.0.2.tar.gz' saved [111228/111228]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/protobuf-c-1.0.2-2.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 80477f0... - x32 rebuild - release 2 (by relup.sh)
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	 tests
--without:	
Writing git revision for tag auto/ti/protobuf-c-1.0.2-2
On detached HEAD. Use -r BRANCHNAME to override
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.21753
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf protobuf-c-1.0.2
Begin-PLD-Builder-Info
Build-Time: user:2.49s sys:1.04s real:9.21s (faults io:0 non-io:165953)
Files queued for ftp:
    116678 protobuf-c-1.0.2-2.src.rpm
       188 protobuf-c-1.0.2-2.src.rpm.uploadinfo
End-PLD-Builder-Info