[...]

 28650K .......... .......... .......... .......... .......... 97% 83.4M 0s
 28700K .......... .......... .......... .......... .......... 97%  261M 0s
 28750K .......... .......... .......... .......... .......... 97% 90.2M 0s
 28800K .......... .......... .......... .......... .......... 97% 92.4M 0s
 28850K .......... .......... .......... .......... .......... 97% 72.1M 0s
 28900K .......... .......... .......... .......... .......... 98% 70.1M 0s
 28950K .......... .......... .......... .......... .......... 98% 75.0M 0s
 29000K .......... .......... .......... .......... .......... 98%  319M 0s
 29050K .......... .......... .......... .......... .......... 98% 75.9M 0s
 29100K .......... .......... .......... .......... .......... 98%  105M 0s
 29150K .......... .......... .......... .......... .......... 98% 71.7M 0s
 29200K .......... .......... .......... .......... .......... 99% 73.2M 0s
 29250K .......... .......... .......... .......... .......... 99%  315M 0s
 29300K .......... .......... .......... .......... .......... 99% 45.1M 0s
 29350K .......... .......... .......... .......... .......... 99% 79.1M 0s
 29400K .......... .......... .......... .......... .......... 99% 62.4M 0s
 29450K .......... .......... .......... .......... .......... 99% 71.1M 0s
 29500K .......... .......... .......... ..........           100% 78.6M=0.8s
2018-04-09 09:33:36 (36.0 MB/s) - 'R-3.4.3.tar.gz' saved [30249655/30249655]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/R-3.4.3-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 967c8b5... - updated to 3.4.3
fatal: HEAD does not point to a branch
Building R.spec with the following conditional flags:
 --without tests
from available:
--with   :	
--without:	 docs openmp tcl <tests>
Writing git revision for tag auto/ti/R-3.4.3-1
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.87837
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf R-3.4.3
Begin-TLD-Builder-Info
Build-Time: user:1.96s sys:0.63s real:4.67s (faults io:0 non-io:109320)
Files queued for ftp:
  30266353 R-3.4.3-1.src.rpm
       179 R-3.4.3-1.src.rpm.uploadinfo
End-TLD-Builder-Info