[...]

 28900K .......... .......... .......... .......... .......... 97% 37.5M 0s
 28950K .......... .......... .......... .......... .......... 97% 82.6M 0s
 29000K .......... .......... .......... .......... .......... 97%  244M 0s
 29050K .......... .......... .......... .......... .......... 97% 78.0M 0s
 29100K .......... .......... .......... .......... .......... 98%  113M 0s
 29150K .......... .......... .......... .......... .......... 98% 79.1M 0s
 29200K .......... .......... .......... .......... .......... 98% 1.80M 0s
 29250K .......... .......... .......... .......... .......... 98% 83.9M 0s
 29300K .......... .......... .......... .......... .......... 98%  201M 0s
 29350K .......... .......... .......... .......... .......... 98% 31.8M 0s
 29400K .......... .......... .......... .......... .......... 99% 79.5M 0s
 29450K .......... .......... .......... .......... .......... 99%  233M 0s
 29500K .......... .......... .......... .......... .......... 99% 86.5M 0s
 29550K .......... .......... .......... .......... .......... 99% 96.9M 0s
 29600K .......... .......... .......... .......... .......... 99%  248M 0s
 29650K .......... .......... .......... .......... .......... 99% 82.5M 0s
 29700K .......... .......... .......... .....                100%  230M=1.2s
2019-10-18 23:04:10 (23.3 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-3.6.0-3.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at fb2b8ee - release 3 (by relup.sh)
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-3.6.0-3
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.79731
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf R-3.6.0
Begin-TLD-Builder-Info
Build-Time: user:2.44s sys:0.65s real:6.69s (faults io:0 non-io:103815)
Files queued for ftp:
  30463548 R-3.6.0-3.src.rpm
       179 R-3.6.0-3.src.rpm.uploadinfo
End-TLD-Builder-Info