Prts tree is at r504068. Installation of port sysutils/bareos-client installs a user on the local machine with a potential risc due to the lack of a password or an explicite account lock. vipw reveals after installation this row:
which should be
This port only uses the ports framework provided method to add users/groups:
As such it is unlikely an issue, but if so, an issue that would affect every port that uses it.
Further, note that the user account has the shell set to /usr/sbin/nologin
man 8 nologin shows:
The nologin utility displays a message that an account is not available
and exits non-zero. It is intended as a replacement shell field for
accounts that have been disabled.