[...]

 14000K .......... .......... .......... .......... .......... 93%  310M 0s
 14050K .......... .......... .......... .......... .......... 94% 47.2M 0s
 14100K .......... .......... .......... .......... .......... 94%  313M 0s
 14150K .......... .......... .......... .......... .......... 94% 43.0M 0s
 14200K .......... .......... .......... .......... .......... 95%  270M 0s
 14250K .......... .......... .......... .......... .......... 95% 74.6M 0s
 14300K .......... .......... .......... .......... .......... 95% 80.5M 0s
 14350K .......... .......... .......... .......... .......... 96% 85.1M 0s
 14400K .......... .......... .......... .......... .......... 96%  285M 0s
 14450K .......... .......... .......... .......... .......... 96% 86.2M 0s
 14500K .......... .......... .......... .......... .......... 97%  117M 0s
 14550K .......... .......... .......... .......... .......... 97%  192M 0s
 14600K .......... .......... .......... .......... .......... 97% 82.1M 0s
 14650K .......... .......... .......... .......... .......... 98%  397M 0s
 14700K .......... .......... .......... .......... .......... 98% 88.5M 0s
 14750K .......... .......... .......... .......... .......... 98% 83.7M 0s
 14800K .......... .......... .......... .......... .......... 99% 84.6M 0s
 14850K .......... .......... .......... .......... .......... 99%  386M 0s
 14900K .......... .......... .......... .......... .......... 99% 81.9M 0s
 14950K .......... .......... .......... ......               100%  309M=0.4s
2017-07-04 17:15:42 (34.6 MB/s) - 'go1.8.3.src.tar.gz' saved [15345996/15345996]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/golang-1.8.3-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 cgo ext_linker shared tests verbose
Writing git revision for tag auto/ti/golang-1.8.3-1
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.60664
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf golang-1.8.3
Begin-TLD-Builder-Info
Build-Time: user:1.15s sys:0.24s real:6.69s (faults io:0 non-io:110404)
Files queued for ftp:
  15270653 golang-1.8.3-1.src.rpm
       184 golang-1.8.3-1.src.rpm.uploadinfo
End-TLD-Builder-Info