[...]

 28900K .......... .......... .......... .......... .......... 97% 81.3M 0s
 28950K .......... .......... .......... .......... .......... 97% 77.2M 0s
 29000K .......... .......... .......... .......... .......... 97%  236M 0s
 29050K .......... .......... .......... .......... .......... 97% 74.0M 0s
 29100K .......... .......... .......... .......... .......... 98% 73.6M 0s
 29150K .......... .......... .......... .......... .......... 98% 15.5M 0s
 29200K .......... .......... .......... .......... .......... 98% 89.0M 0s
 29250K .......... .......... .......... .......... .......... 98%  297M 0s
 29300K .......... .......... .......... .......... .......... 98% 73.2M 0s
 29350K .......... .......... .......... .......... .......... 98% 2.21M 0s
 29400K .......... .......... .......... .......... .......... 99% 7.29M 0s
 29450K .......... .......... .......... .......... .......... 99% 60.7M 0s
 29500K .......... .......... .......... .......... .......... 99%  283M 0s
 29550K .......... .......... .......... .......... .......... 99%  104M 0s
 29600K .......... .......... .......... .......... .......... 99% 76.4M 0s
 29650K .......... .......... .......... .......... .......... 99%  112M 0s
 29700K .......... .......... .......... .....                100%  116M=1.3s
2019-08-24 14:29:24 (22.6 MB/s) - 'R-3.6.0.tar.gz' saved [30449618/30449618]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/R-3.6.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 34254ce - updated to 3.6.0
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-3.6.0-1
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.88206
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf R-3.6.0
Begin-TLD-Builder-Info
Build-Time: user:1.89s sys:0.33s real:5.34s (faults io:0 non-io:113568)
Files queued for ftp:
  30463377 R-3.6.0-1.src.rpm
       179 R-3.6.0-1.src.rpm.uploadinfo
End-TLD-Builder-Info