[...]

builder: SMP make flags are set to -j2
Cloning into 'libmd'...
Already up to date.
Available branches: martin.hinner.info-implementation master
--2021-05-09 20:23:52--  http://distfiles.pld-linux.org/by-md5/5/8/58f9a39d0a4296c7d2d59287d4f81cdf/libmd-1.0.3.tar.xz
Resolving distfiles.pld-linux.org... 193.239.45.41
Connecting to distfiles.pld-linux.org|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 258584 (253K) [application/octet-stream]
Saving to: 'libmd-1.0.3.tar.xz'
     0K .......... .......... .......... .......... .......... 19%  811K 0s
    50K .......... .......... .......... .......... .......... 39% 1.59M 0s
   100K .......... .......... .......... .......... .......... 59% 36.9M 0s
   150K .......... .......... .......... .......... .......... 79% 40.9M 0s
   200K .......... .......... .......... .......... .......... 99% 1.68M 0s
   250K ..                                                    100% 45.9M=0.1s
2021-05-09 20:23:52 (1.99 MB/s) - 'libmd-1.0.3.tar.xz' saved [258584/258584]
./builder[2756]: ulimit: exceeds allowable limit
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libmd-1.0.3-1.src.rpm
real 0.06
user 0.04
sys 0.01
exit status 0
Writing package revision
builder: SMP make flags are set to -j2
Already up to date.
Available branches: martin.hinner.info-implementation master
libmd-1.0.3.tar.xz having proper md5sum already exists
./builder[2756]: ulimit: exceeds allowable limit
Building target platforms: i686-linux
Building for target i686-linux
Wrote: /home/users/builder/rpm/SRPMS/libmd-1.0.3-1.src.rpm
real 0.07
user 0.04
sys 0.02
Writing git revision for tag tld/libmd-1.0.3-1
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:0.70s sys:0.46s real:1.85s (faults io:1 non-io:91366)
Files queued for ftp:
    268590 libmd-1.0.3-1.src.rpm
       183 libmd-1.0.3-1.src.rpm.uploadinfo
End-TLD-Builder-Info