[...]

 77550K .......... .......... .......... .......... .......... 98% 9.71M 0s
 77600K .......... .......... .......... .......... .......... 98% 9.01M 0s
 77650K .......... .......... .......... .......... .......... 99% 10.2M 0s
 77700K .......... .......... .......... .......... .......... 99% 8.79M 0s
 77750K .......... .......... .......... .......... .......... 99% 9.51M 0s
 77800K .......... .......... .......... .......... .......... 99% 10.2M 0s
 77850K .......... .......... .......... .......... .......... 99% 8.22M 0s
 77900K .......... .......... .......... .......... .......... 99% 10.2M 0s
 77950K .......... .......... .......... .......... .......... 99% 9.69M 0s
 78000K .......... .......... .......... .......... .......... 99% 9.00M 0s
 78050K .......... .......... .......... .......... .......... 99% 10.8M 0s
 78100K .......... .......... .......... .......... .......... 99% 9.13M 0s
 78150K .......... .......... .......... .......... .......... 99% 9.08M 0s
 78200K .......... .......... .......... .......... .......... 99% 10.6M 0s
 78250K .......... .......... .......... .......... .......... 99% 8.28M 0s
 78300K .......... .......... .......... .......... .......... 99% 10.7M 0s
 78350K .......... .......... .......... .......... .......... 99% 9.57M 0s
 78400K .......... .......... .......... .......... .......... 99% 8.96M 0s
 78450K                                                       100%  656G=7.9s
2014-10-06 07:53:21 (9.69 MB/s) - 'linux-3.17.tar.xz' saved [80333152/80333152]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/linux-libc-headers-3.17.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 tests
Writing git revision for tag auto/ti/linux-libc-headers-3.17.0-1
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean):  env -i TMP=/home/users/builder/tmp PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin HOME=/home/users/builder TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.39270
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf linux-libc-headers-3.17.0
Begin-PLD-Builder-Info
Build-Time: user:20.33s sys:7.43s real:41.66s (faults io:7 non-io:324590)
Files queued for ftp:
  80376949 linux-libc-headers-3.17.0-1.src.rpm
       197 linux-libc-headers-3.17.0-1.src.rpm.uploadinfo
End-PLD-Builder-Info