Drupal demo sites failed to rebuild because of missing sendmail
Since 2018-11-09 01:00 UTC, Drupal demo sites (dmaster/dcase) failed to rebuild because of missing sendmail:
Starting Drupal installation. This takes a few seconds ... [ok]
sh: 1: /usr/sbin/sendmail: not found
WD mail: Error sending e-mail (from admin@example.com to [error]
admin@example.com).
Installation complete. User name: admin User password: ZUxW5Ai0soy4 [ok]
Unable to send e-mail. Contact the site administrator if the problem [error]
persists.
+ set +x