[...]

 91650K .......... .......... .......... .......... .......... 99% 10.7M 0s
 91700K .......... .......... .......... .......... .......... 99% 11.6M 0s
 91750K .......... .......... .......... .......... .......... 99% 11.4M 0s
 91800K .......... .......... .......... .......... .......... 99% 11.0M 0s
 91850K .......... .......... .......... .......... .......... 99% 11.5M 0s
 91900K .......... .......... .......... .......... .......... 99% 10.8M 0s
 91950K .......... .......... .......... .......... .......... 99% 11.5M 0s
 92000K .......... .......... .......... .......... .......... 99% 10.8M 0s
 92050K .......... .......... .......... .......... .......... 99% 11.6M 0s
 92100K .......... .......... .......... .......... .......... 99% 10.6M 0s
 92150K .......... .......... .......... .......... .......... 99% 11.7M 0s
 92200K .......... .......... .......... .......... .......... 99% 11.4M 0s
 92250K .......... .......... .......... .......... .......... 99% 10.9M 0s
 92300K .......... .......... .......... .......... .......... 99% 11.5M 0s
 92350K .......... .......... .......... .......... .......... 99% 11.5M 0s
 92400K .......... .......... .......... .......... .......... 99% 10.8M 0s
 92450K .......... .......... .......... .......... .......... 99% 11.5M 0s
 92500K .......... .......... .......... .......... .......... 99% 10.9M 0s
 92550K ......                                                100% 12.4M=8.6s
2015-02-06 11:33:15 (10.5 MB/s) - 'boost_1_56_0.tar.bz2' saved [94777674/94777674]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/boost-1.56.0-2.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 python
Writing git revision for tag auto/ti/boost-1.56.0-2
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.55089
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf boost_1_56_0
Begin-PLD-Builder-Info
Build-Time: user:19.25s sys:7.87s real:55.68s (faults io:152 non-io:425148)
Files queued for ftp:
  94613420 boost-1.56.0-2.src.rpm
       184 boost-1.56.0-2.src.rpm.uploadinfo
End-PLD-Builder-Info