[...]

builder: SMP make flags are set to -j2
Cloning into 'mdadm'...
6db3aa41da4e9b44d8f2d2ffd7fff3448328db4f
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
--2021-01-25 20:35:29--  http://df.tld-linux.org/by-md5/5/1/51bf3651bd73a06c413a2f964f299598/mdadm-4.1.tar.xz
Resolving df.tld-linux.org (df.tld-linux.org)... 146.59.191.181
Connecting to df.tld-linux.org (df.tld-linux.org)|146.59.191.181|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 440756 (430K) [application/x-xz]
Saving to: 'mdadm-4.1.tar.xz'
     0K .......... .......... .......... .......... .......... 11%  115M 0s
    50K .......... .......... .......... .......... .......... 23%  120M 0s
   100K .......... .......... .......... .......... .......... 34% 4.56M 0s
   150K .......... .......... .......... .......... .......... 46%  103M 0s
   200K .......... .......... .......... .......... .......... 58%  122M 0s
   250K .......... .......... .......... .......... .......... 69%  136M 0s
   300K .......... .......... .......... .......... .......... 81%  134M 0s
   350K .......... .......... .......... .......... .......... 92% 3.86M 0s
   400K .......... .......... ..........                      100%  151M=0.03s
2021-01-25 20:35:29 (16.2 MB/s) - 'mdadm-4.1.tar.xz' saved [440756/440756]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/mdadm-4.1-1.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.62035
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf mdadm-4.1
Begin-TLD-Builder-Info
Build-Time: user:0.80s sys:0.56s real:3.26s (faults io:204 non-io:102242)
Files queued for ftp:
    451126 mdadm-4.1-1.src.rpm
End-TLD-Builder-Info