[...]

No conditional flags passed
from available:
--with   :	
--without:	 python verbose
Available branches: master
Searching for tag auto/ti/dtc-1.5.0-1...
Searching for tag auto/ti/dtc-1_5_0-1...
--2019-08-13 18:54:59--  http://distfiles.pld-linux.org/by-md5/1/e/1e7f54238d991b81c54fb5aabf71ff23/dtc-1.5.0.tar.xz
Resolving distfiles.pld-linux.org (distfiles.pld-linux.org)... 193.239.45.41
Connecting to distfiles.pld-linux.org (distfiles.pld-linux.org)|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 152936 (149K) [application/octet-stream]
Saving to: 'dtc-1.5.0.tar.xz'
     0K .......... .......... .......... .......... .......... 33%  613K 0s
    50K .......... .......... .......... .......... .......... 66% 1.19M 0s
   100K .......... .......... .......... .......... ......... 100% 75.8M=0.1s
2019-08-13 18:55:00 (1.18 MB/s) - 'dtc-1.5.0.tar.xz' saved [152936/152936]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/dtc-1.5.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 python verbose
Writing git revision for tag auto/ti/dtc-1.5.0-1
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.33134
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf dtc-1.5.0
Begin-TLD-Builder-Info
Build-Time: user:0.87s sys:0.17s real:2.73s (faults io:0 non-io:101128)
Files queued for ftp:
    159712 dtc-1.5.0-1.src.rpm
       181 dtc-1.5.0-1.src.rpm.uploadinfo
End-TLD-Builder-Info