[...]

building SRPM using: cd rpm/packages; nice -n 0 ./builder -nu -nm --nodeps --http -bs  -r HEAD  -Tp auto/ti/ -tt  cifs-utils.spec 2>&1
builder: SMP make flags are set to -j2
Cloning into 'cifs-utils'...
046ac3f7c342b2bbac05083b2f6807eece2b31ee
Already on 'master'
Your branch is up-to-date with 'origin/master'.
Already up-to-date.
Available branches: master
Searching for tag auto/ti/cifs-utils-6.4-1...
Searching for tag auto/ti/cifs-utils-6_4-1...
--2015-07-27 18:12:38--  http://distfiles.pld-linux.org/distfiles/by-md5/b/7/b7d75b67fd3987952896d27256c7293d/cifs-utils-6.4.tar.bz2
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: 392809 (384K) [application/x-bzip2]
Saving to: 'cifs-utils-6.4.tar.bz2'
     0K .......... .......... .......... .......... .......... 13%  779K 0s
    50K .......... .......... .......... .......... .......... 26% 1.47M 0s
   100K .......... .......... .......... .......... .......... 39% 1.52M 0s
   150K .......... .......... .......... .......... .......... 52% 1.56M 0s
   200K .......... .......... .......... .......... .......... 65% 11.7M 0s
   250K .......... .......... .......... .......... .......... 78% 1.68M 0s
   300K .......... .......... .......... .......... .......... 91% 11.2M 0s
   350K .......... .......... .......... ...                  100% 11.5M=0.2s
2015-07-27 18:12:39 (1.86 MB/s) - 'cifs-utils-6.4.tar.bz2' saved [392809/392809]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/cifs-utils-6.4-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/cifs-utils-6.4-1
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.89317
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf cifs-utils-6.4
Begin-PLD-Builder-Info
Build-Time: user:2.97s sys:1.46s real:5.40s (faults io:0 non-io:192308)
Files queued for ftp:
    399084 cifs-utils-6.4-1.src.rpm
       186 cifs-utils-6.4-1.src.rpm.uploadinfo
End-PLD-Builder-Info