[...]

   550K .......... .......... .......... .......... .......... 40% 97.6M 0s
   600K .......... .......... .......... .......... .......... 44%  262M 0s
   650K .......... .......... .......... .......... .......... 47% 83.0M 0s
   700K .......... .......... .......... .......... .......... 50% 84.8M 0s
   750K .......... .......... .......... .......... .......... 54%  138M 0s
   800K .......... .......... .......... .......... .......... 57% 77.8M 0s
   850K .......... .......... .......... .......... .......... 61% 1.38M 0s
   900K .......... .......... .......... .......... .......... 64%  244M 0s
   950K .......... .......... .......... .......... .......... 67% 79.5M 0s
  1000K .......... .......... .......... .......... .......... 71%  146M 0s
  1050K .......... .......... .......... .......... .......... 74% 77.6M 0s
  1100K .......... .......... .......... .......... .......... 77%  109M 0s
  1150K .......... .......... .......... .......... .......... 81% 76.9M 0s
  1200K .......... .......... .......... .......... .......... 84% 81.8M 0s
  1250K .......... .......... .......... .......... .......... 88%  137M 0s
  1300K .......... .......... .......... .......... .......... 91% 1.21M 0s
  1350K .......... .......... .......... .......... .......... 94% 1.39M 0s
  1400K .......... .......... .......... .......... .......... 98%  179M 0s
  1450K .......... .......... ....                            100%  187M=0.3s
2019-10-30 17:27:46 (4.54 MB/s) - 'libheif-1.5.1.tar.gz' saved [1510087/1510087]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libheif-1.5.1-2.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-1.5.1-2
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.23468
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf libheif-1.5.1
Begin-TLD-Builder-Info
Build-Time: user:1.29s sys:0.56s real:5.90s (faults io:0 non-io:95448)
Files queued for ftp:
   1517123 libheif-1.5.1-2.src.rpm
       185 libheif-1.5.1-2.src.rpm.uploadinfo
End-TLD-Builder-Info