[...]

 27850K .......... .......... .......... .......... .......... 97% 8.65M 0s
 27900K .......... .......... .......... .......... .......... 97% 8.21M 0s
 27950K .......... .......... .......... .......... .......... 97% 7.53M 0s
 28000K .......... .......... .......... .......... .......... 97% 11.5M 0s
 28050K .......... .......... .......... .......... .......... 97% 7.59M 0s
 28100K .......... .......... .......... .......... .......... 98% 10.8M 0s
 28150K .......... .......... .......... .......... .......... 98% 10.8M 0s
 28200K .......... .......... .......... .......... .......... 98% 7.53M 0s
 28250K .......... .......... .......... .......... .......... 98% 11.5M 0s
 28300K .......... .......... .......... .......... .......... 98% 10.2M 0s
 28350K .......... .......... .......... .......... .......... 98% 8.19M 0s
 28400K .......... .......... .......... .......... .......... 99% 11.5M 0s
 28450K .......... .......... .......... .......... .......... 99% 8.15M 0s
 28500K .......... .......... .......... .......... .......... 99% 10.3M 0s
 28550K .......... .......... .......... .......... .......... 99% 10.6M 0s
 28600K .......... .......... .......... .......... .......... 99% 8.23M 0s
 28650K .......... .......... .......... .......... .......... 99% 10.9M 0s
 28700K .......... .......... ...                             100% 13.0M=3.3s
2015-08-25 12:00:47 (8.62 MB/s) - 'libvirt-1.2.18.tar.gz' saved [29412554/29412554]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libvirt-1.2.18-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 4c04ce8... - updated to 1.2.18
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	 vserver
--without:	 ceph esx glusterfs hyperv libxl lxc netcf openvz phyp polkit qemu sanlock static_libs systemtap uml vbox vmware xen xenapi
Writing git revision for tag auto/ti/libvirt-1.2.18-1
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.24165
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libvirt-1.2.18
Begin-PLD-Builder-Info
Build-Time: user:11.49s sys:4.72s real:20.96s (faults io:3 non-io:422012)
Files queued for ftp:
  29376321 libvirt-1.2.18-1.src.rpm
       186 libvirt-1.2.18-1.src.rpm.uploadinfo
End-PLD-Builder-Info