[...]

No conditional flags passed
from available:
--with   :	
--without:	 prof
Available branches: master
Searching for tag auto/ti/ghc-xml-1.3.13-1...
Searching for tag auto/ti/ghc-xml-1_3_13-1...
--2017-10-21 15:41:07--  http://distfiles.pld-linux.org/distfiles/by-md5/1/7/17823634f69305e8d4cc99b22934a78c/xml-1.3.13.tar.gz
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: 12082 (12K) [application/x-gzip]
Saving to: 'xml-1.3.13.tar.gz'
     0K .......... .                                          100%  195M=0s
2017-10-21 15:41:07 (195 MB/s) - 'xml-1.3.13.tar.gz' saved [12082/12082]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/ghc-xml-1.3.13-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at a9cc654... - new
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	
--without:	 prof
Writing git revision for tag auto/ti/ghc-xml-1.3.13-1
On detached HEAD. Use -r BRANCHNAME to override
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.43131
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf xml-1.3.13
Begin-TLD-Builder-Info
Build-Time: user:0.91s sys:0.23s real:2.20s (faults io:0 non-io:81918)
Files queued for ftp:
     16778 ghc-xml-1.3.13-1.src.rpm
       186 ghc-xml-1.3.13-1.src.rpm.uploadinfo
End-TLD-Builder-Info