[...]

Length: 36370 (36K) [application/x-bzip2]
Saving to: 'shorewall6-lite-5.2.0.5.tar.bz2'
     0K .......... .......... .......... .....                100% 27.0M=0.001s
2018-08-10 14:10:01 (27.0 MB/s) - 'shorewall6-lite-5.2.0.5.tar.bz2' saved [36370/36370]
--2018-08-10 14:10:01--  http://df.tld-linux.org/distfiles/by-md5/8/7/87cc6453104a65fac36996a86469157e/shorewall-init-5.2.0.5.tar.bz2
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: 30881 (30K) [application/x-bzip2]
Saving to: 'shorewall-init-5.2.0.5.tar.bz2'
     0K .......... .......... ..........                      100% 16.0M=0.002s
2018-08-10 14:10:06 (16.0 MB/s) - 'shorewall-init-5.2.0.5.tar.bz2' saved [30881/30881]
--2018-08-10 14:10:06--  http://df.tld-linux.org/distfiles/by-md5/1/6/16e6505831f5c1bc19c08d8982a4becc/shorewall-core-5.2.0.5.tar.bz2
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: 76567 (75K) [application/x-bzip2]
Saving to: 'shorewall-core-5.2.0.5.tar.bz2'
     0K .......... .......... .......... .......... .......... 66% 27.6M 0s
    50K .......... .......... ....                            100%  262M=0.002s
2018-08-10 14:10:11 (39.2 MB/s) - 'shorewall-core-5.2.0.5.tar.bz2' saved [76567/76567]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/shorewall-5.2.0.5-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
Writing git revision for tag auto/ti/shorewall-5.2.0.5-1
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.39351
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf shorewall-5.2.0.5
Begin-TLD-Builder-Info
Build-Time: user:0.59s sys:0.06s real:87.39s (faults io:18 non-io:220628)
Files queued for ftp:
    920676 shorewall-5.2.0.5-1.src.rpm
       189 shorewall-5.2.0.5-1.src.rpm.uploadinfo
End-TLD-Builder-Info