[...]

 24100K .......... .......... .......... .......... .......... 96% 11.5M 0s
 24150K .......... .......... .......... .......... .......... 96% 11.5M 0s
 24200K .......... .......... .......... .......... .......... 96% 10.3M 0s
 24250K .......... .......... .......... .......... .......... 97% 11.5M 0s
 24300K .......... .......... .......... .......... .......... 97% 11.5M 0s
 24350K .......... .......... .......... .......... .......... 97% 10.9M 0s
 24400K .......... .......... .......... .......... .......... 97% 11.5M 0s
 24450K .......... .......... .......... .......... .......... 97% 10.8M 0s
 24500K .......... .......... .......... .......... .......... 98% 11.5M 0s
 24550K .......... .......... .......... .......... .......... 98% 11.5M 0s
 24600K .......... .......... .......... .......... .......... 98% 10.9M 0s
 24650K .......... .......... .......... .......... .......... 98% 11.5M 0s
 24700K .......... .......... .......... .......... .......... 98% 10.8M 0s
 24750K .......... .......... .......... .......... .......... 99% 11.5M 0s
 24800K .......... .......... .......... .......... .......... 99% 10.9M 0s
 24850K .......... .......... .......... .......... .......... 99% 11.5M 0s
 24900K .......... .......... .......... .......... .......... 99% 11.5M 0s
 24950K .......... .......... .......... .......... .......... 99% 10.9M 0s
 25000K                                                       100% 1578G=2.4s
2015-07-13 14:23:10 (9.97 MB/s) - 'icu4c-55_1-src.tgz' saved [25600847/25600847]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/icu-55.1-1.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-55.1-1
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.23028
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf icu
Begin-PLD-Builder-Info
Build-Time: user:7.23s sys:2.77s real:27.62s (faults io:153 non-io:233485)
Files queued for ftp:
  24400850 icu-55.1-1.src.rpm
       180 icu-55.1-1.src.rpm.uploadinfo
End-PLD-Builder-Info