[...]

No conditional flags passed
from available:
--with   :	
--without:	 ocaml_opt tk
Available branches: AC-branch master ocaml-3
Searching for tag auto/ti/ocaml-findlib-1.7.3-1...
Searching for tag auto/ti/ocaml-findlib-1_7_3-1...
--2017-10-19 19:28:08--  http://distfiles.pld-linux.org/distfiles/by-md5/7/d/7d57451218359f7b7dfc969e3684a6da/findlib-1.7.3.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: 257703 (252K) [application/x-gzip]
Saving to: 'findlib-1.7.3.tar.gz'
     0K .......... .......... .......... .......... .......... 19% 1.10M 0s
    50K .......... .......... .......... .......... .......... 39% 2.15M 0s
   100K .......... .......... .......... .......... .......... 59% 38.3M 0s
   150K .......... .......... .......... .......... .......... 79%  158M 0s
   200K .......... .......... .......... .......... .......... 99% 2.35M 0s
   250K .                                                     100% 3172G=0.09s
2017-10-19 19:28:08 (2.75 MB/s) - 'findlib-1.7.3.tar.gz' saved [257703/257703]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/ocaml-findlib-1.7.3-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 ocaml_opt tk
Writing git revision for tag auto/ti/ocaml-findlib-1.7.3-1
Tag auto/ti/ocaml-findlib-1.7.3-1 already exists
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.97572
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf findlib-1.7.3
Begin-TLD-Builder-Info
Build-Time: user:0.98s sys:0.30s real:3.00s (faults io:8 non-io:96854)
End-TLD-Builder-Info