[...]

 28850K .......... .......... .......... .......... .......... 97% 55.1M 0s
 28900K .......... .......... .......... .......... .......... 97% 69.2M 0s
 28950K .......... .......... .......... .......... .......... 97% 37.6M 0s
 29000K .......... .......... .......... .......... .......... 97% 1.31M 0s
 29050K .......... .......... .......... .......... .......... 98% 34.0M 0s
 29100K .......... .......... .......... .......... .......... 98% 39.2M 0s
 29150K .......... .......... .......... .......... .......... 98% 43.4M 0s
 29200K .......... .......... .......... .......... .......... 98% 39.3M 0s
 29250K .......... .......... .......... .......... .......... 98%  180M 0s
 29300K .......... .......... .......... .......... .......... 98% 1.29M 0s
 29350K .......... .......... .......... .......... .......... 99% 31.2M 0s
 29400K .......... .......... .......... .......... .......... 99% 38.3M 0s
 29450K .......... .......... .......... .......... .......... 99% 37.2M 0s
 29500K .......... .......... .......... .......... .......... 99% 68.9M 0s
 29550K .......... .......... .......... .......... .......... 99% 72.6M 0s
 29600K .......... .......... .......... .......... .......... 99% 1.30M 0s
 29650K .......... .......... .......... .                    100% 38.2M=4.6s
2019-05-16 08:09:33 (6.34 MB/s) - 'node-v8.12.0.tar.gz' saved [30393516/30393516]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/nodejs-8.12.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 2317436 update LTS info url
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	 shared
--without:	 system_uv
Writing git revision for tag auto/ti/nodejs-8.12.0-1
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.25615
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf node-v8.12.0
Begin-TLD-Builder-Info
Build-Time: user:1.59s sys:0.27s real:9.36s (faults io:0 non-io:127187)
Files queued for ftp:
  30175870 nodejs-8.12.0-1.src.rpm
       185 nodejs-8.12.0-1.src.rpm.uploadinfo
End-TLD-Builder-Info