[...]

builder: SMP make flags are set to -j2
Cloning into 'mdadm'...
13309750e9b2bcf70465d879297617c7cd5e9cca
Already on 'master'
Your branch is up-to-date with 'origin/master'.
Already up-to-date.
No conditional flags passed
from available:
--with   :	 dietlibc initrd
--without:	 tests
Available branches: master
--2016-07-28 16:59:00--  http://df.tld-linux.org/distfiles/by-md5/0/4/04b8b21f637540350f8517c7e68d3c63/mdadm-3.4.tar.xz
Resolving df.tld-linux.org (df.tld-linux.org)... 46.4.78.55
Connecting to df.tld-linux.org (df.tld-linux.org)|46.4.78.55|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 422704 (413K) [application/x-xz]
Saving to: 'mdadm-3.4.tar.xz'
     0K .......... .......... .......... .......... .......... 12% 1.77M 0s
    50K .......... .......... .......... .......... .......... 24% 4.23M 0s
   100K .......... .......... .......... .......... .......... 36% 6.50M 0s
   150K .......... .......... .......... .......... .......... 48% 8.65M 0s
   200K .......... .......... .......... .......... .......... 60% 10.3M 0s
   250K .......... .......... .......... .......... .......... 72% 11.4M 0s
   300K .......... .......... .......... .......... .......... 84% 10.8M 0s
   350K .......... .......... .......... .......... .......... 96% 11.6M 0s
   400K .......... ..                                         100% 12.3M=0.07s
2016-07-28 16:59:00 (5.67 MB/s) - 'mdadm-3.4.tar.xz' saved [422704/422704]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/mdadm-3.4-1.src.rpm
exit status 0
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.28281
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf mdadm-3.4
Begin-TLD-Builder-Info
Build-Time: user:2.26s sys:1.49s real:5.72s (faults io:144 non-io:105334)
Files queued for ftp:
    433376 mdadm-3.4-1.src.rpm
End-TLD-Builder-Info