[...]

o %_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.11475
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf proftpd-1.3.6b
Begin-TLD-Builder-Info
Build-Time: user:4.17s sys:2.82s real:11.92s (faults io:0 non-io:437152)
Files queued for ftp:
  20256828 proftpd-1.3.6b-1.src.rpm
       186 proftpd-1.3.6b-1.src.rpm.uploadinfo
End-TLD-Builder-Info