[...]

Saving to: 'smartmontools-6.4.tar.gz'
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   800K ...                                                   100% 6219G=0.1s
2015-07-17 14:00:24 (7.55 MB/s) - 'smartmontools-6.4.tar.gz' saved [822539/822539]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/smartmontools-6.4-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 capng selinux
Writing git revision for tag auto/ti/smartmontools-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.52952
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf smartmontools-6.4
Begin-PLD-Builder-Info
Build-Time: user:3.08s sys:1.86s real:5.38s (faults io:5 non-io:271873)
Files queued for ftp:
    839652 smartmontools-6.4-1.src.rpm
       189 smartmontools-6.4-1.src.rpm.uploadinfo
End-PLD-Builder-Info