[...]

ilddir 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.41133
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf percona-server-5.7.23-23
Begin-TLD-Builder-Info
Build-Time: user:7.00s sys:1.10s real:20.54s (faults io:233 non-io:343307)
Files queued for ftp:
 145283634 mysql-5.7.23-23.2.src.rpm
       187 mysql-5.7.23-23.2.src.rpm.uploadinfo
End-TLD-Builder-Info