[...]

   350K .......... .......... .......... .......... .......... 30% 39.5M 0s
   400K .......... .......... .......... .......... .......... 34% 1.15M 0s
   450K .......... .......... .......... .......... .......... 38% 83.3M 0s
   500K .......... .......... .......... .......... .......... 42% 57.2M 0s
   550K .......... .......... .......... .......... .......... 46% 52.0M 0s
   600K .......... .......... .......... .......... .......... 50% 33.9M 0s
   650K .......... .......... .......... .......... .......... 53% 1.15M 0s
   700K .......... .......... .......... .......... .......... 57% 73.8M 0s
   750K .......... .......... .......... .......... .......... 61% 41.3M 0s
   800K .......... .......... .......... .......... .......... 65% 38.3M 0s
   850K .......... .......... .......... .......... .......... 69% 54.0M 0s
   900K .......... .......... .......... .......... .......... 73% 36.8M 0s
   950K .......... .......... .......... .......... .......... 77% 1.17M 0s
  1000K .......... .......... .......... .......... .......... 80% 62.4M 0s
  1050K .......... .......... .......... .......... .......... 84% 39.9M 0s
  1100K .......... .......... .......... .......... .......... 88% 62.9M 0s
  1150K .......... .......... .......... .......... .......... 92% 41.0M 0s
  1200K .......... .......... .......... .......... .......... 96% 1.17M 0s
  1250K .......... .......... .......... .......... .......   100% 81.1M=0.4s
2019-01-16 14:21:59 (3.42 MB/s) - 'libheif-1.3.2.tar.gz' saved [1328174/1328174]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libheif-1.3.2-3.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 tests
Writing git revision for tag auto/ti/libheif-1.3.2-3
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.92308
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libheif-1.3.2
Begin-TLD-Builder-Info
Build-Time: user:0.68s sys:0.11s real:2.50s (faults io:0 non-io:89867)
Files queued for ftp:
   1334890 libheif-1.3.2-3.src.rpm
       185 libheif-1.3.2-3.src.rpm.uploadinfo
End-TLD-Builder-Info