Comment 2 for bug 1780071

Thank you for reporting this bug. We believe it is an actual issue and will look into having it fixed.

For the record, I've been able to reproduce it easily on a pristine bionic container, by spawning a command and launching a login shell, which empties the environment and calls pam_motd:

simpoir@qs:~$ sh -c 'sleep 60; echo ಠ_ಠ' &
[1] 2514
simpoir@qs:~$ sudo login
qs login: simpoir
Password:
Last login: Wed Jul 4 12:31:15 UTC 2018 on pts/0
Welcome to Ubuntu 18.04 LTS (GNU/Linux 4.15.0-15-generic x86_64)

 * Documentation: https://help.ubuntu.com
 * Management: https://landscape.canonical.com
 * Support: https://ubuntu.com/advantage
(None, None)

  System information as of Wed Jul 4 12:38:14 UTC 2018

  System load: 0.75 Memory usage: 0% Users logged in: 1
  Usage of /home: unknown Swap usage: 0% IP address for eth0: 10.4.50.157

  => There were exceptions while processing one or more plugins. See
     /var/log/landscape/sysinfo.log for more information.