In the Artifactory Deb distribution script we test to see if there is already an artifactory user:group and if it exists then it will use this pre-configured user:group
However, if for some reason the user:group was defined as 'nobody (UID:GID == 65534), then the script will try to add this user which is a pre-defined user/group
line 34 of the script == [ -e /etc/opt/jfrog/artifactory ] && read uid gid <<<$(stat -c '%u %g' /etc/opt/jfrog/artifactory)
line 40 of the script == /usr/sbin/groupadd -r artifactory ${gid:+-g} $gid|| exit $?