[...]

 22550K .......... .......... .......... .......... .......... 96%  383M 0s
 22600K .......... .......... .......... .......... .......... 96% 89.5M 0s
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 22850K .......... .......... .......... .......... .......... 97% 72.3M 0s
 22900K .......... .......... .......... .......... .......... 97%  271M 0s
 22950K .......... .......... .......... .......... .......... 98% 92.7M 0s
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 23050K .......... .......... .......... .......... .......... 98%  329M 0s
 23100K .......... .......... .......... .......... .......... 98%  308M 0s
 23150K .......... .......... .......... .......... .......... 98%  226M 0s
 23200K .......... .......... .......... .......... .......... 99% 26.2M 0s
 23250K .......... .......... .......... .......... .......... 99% 64.3M 0s
 23300K .......... .......... .......... .......... .......... 99% 93.9M 0s
 23350K .......... .......... .......... .......... .......... 99%  181M 0s
 23400K .......... .......... .......... .......... .......... 99%  131M 0s
 23450K                                                       100%  838G=0.8s
2019-08-13 19:02:51 (30.1 MB/s) - 'icu4c-64_2-src.tgz' saved [24013250/24013250]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/icu-64.2-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 static_libs
Writing git revision for tag auto/ti/icu-64.2-1
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.36850
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf icu
Begin-TLD-Builder-Info
Build-Time: user:1.64s sys:0.31s real:6.03s (faults io:1 non-io:106203)
Files queued for ftp:
  22670560 icu-64.2-1.src.rpm
       180 icu-64.2-1.src.rpm.uploadinfo
End-TLD-Builder-Info