backup, list, nobody, and root accounts are disabled but have a valid shell

Binary package hint: base-passwd

tiger emits these warnings for the backup, list, nobody, and root accounts
# --WARN-- [pass014w] Login (backup) is disabled, but has a valid shell.

For root on Ubuntu, this makes sense and should be suppressed in tiger.

I'm not sure about the others, so I'm filing it on base-passwd. If this is a real issue, it should surely be addressed in Debian as well.

This bug was fixed in the package base-passwd - 3.5.30

---------------
base-passwd (3.5.30) unstable; urgency=medium

  [ Colin Watson ]
  * Remove config.h.in and configure, now autogenerated by dh-autoreconf.
  * Change the shell of all global static users other than root (which
    retains /bin/sh) and sync (as /bin/sync is rather harmless) to
    /usr/sbin/nologin (closes: #274229; LP: #216813, #248844).
  * Policy version 3.9.5.

  [ Russ Allbery ]
  * Add support for debconf prompting to update-passwd (closes: #184979).

 -- Colin Watson <email address hidden> Tue, 07 Jan 2014 15:41:06 +0000