[...]

 28250K .......... .......... .......... .......... .......... 95% 76.4M 0s
 28300K .......... .......... .......... .......... .......... 95% 75.1M 0s
 28350K .......... .......... .......... .......... .......... 95% 78.5M 0s
 28400K .......... .......... .......... .......... .......... 95%  293M 0s
 28450K .......... .......... .......... .......... .......... 95% 86.0M 0s
 28500K .......... .......... .......... .......... .......... 96% 40.6M 0s
 28550K .......... .......... .......... .......... .......... 96%  233M 0s
 28600K .......... .......... .......... .......... .......... 96% 85.3M 0s
 28650K .......... .......... .......... .......... .......... 96% 72.5M 0s
 28700K .......... .......... .......... .......... .......... 96% 79.1M 0s
 28750K .......... .......... .......... .......... .......... 96% 88.2M 0s
 28800K .......... .......... .......... .......... .......... 97% 58.6M 0s
 28850K .......... .......... .......... .......... .......... 97%  298M 0s
 28900K .......... .......... .......... .......... .......... 97% 51.0M 0s
 28950K .......... .......... .......... .......... .......... 97%  176M 0s
 29000K .......... .......... .......... .......... .......... 97% 36.4M 0s
 29050K .......... .......... .......... .......... .......... 98% 68.8M 0s
 29100K .......... .......... .......... .......... .......... 98% 74.1M 0s
 29150K .......... .......... .......... .......... .......... 98% 82.5M 0s
 29200K .......... .......... .......... .......... .......... 98% 81.9M 0s
 29250K .......... .......... .......... .......... .......... 98% 70.1M 0s
 29300K .......... .......... .......... .......... .......... 98% 5.06M 0s
 29350K .......... .......... .......... .......... .......... 99% 87.5M 0s
 29400K .......... .......... .......... .......... .......... 99%  212M 0s
 29450K .......... .......... .......... .......... .......... 99% 79.4M 0s
 29500K .......... .......... .......... .......... .......... 99% 83.1M 0s
 29550K .......... .......... .......... .......... .......... 99% 78.1M 0s
 29600K .......... .......... .......... .......... .......... 99% 28.7M 0s
 29650K .......... .......... .......... .......... ...       100% 75.5M=1.0s
2019-01-21 10:25:28 (28.2 MB/s) - 'mozjs-52.7.4.tar.bz2' saved [30406120/30406120]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/mozjs52-52.7.4-3.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/mozjs52-52.7.4-3
Tag auto/ti/mozjs52-52.7.4-3 already exists
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.44361
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf mozjs-52.7.4
Begin-TLD-Builder-Info
Build-Time: user:1.95s sys:0.24s real:5.50s (faults io:23 non-io:123466)
End-TLD-Builder-Info