Travis email error starting with Drupal 8.3.0 and Lightning 2.1.0

[damontgomery]

I have a fix listed at the end. I'm mostly leaving this here in case someone gets a similar issue.

My system information:

• Operating system type: Travis CI
• Operating system version: unknown
• BLT version: 8.6.15

Drupal 8.3.0 and Lightning 2.1.0. I could not update one without the other. Previous versions of Drupal / Lightning did not share this issue.

When I run this command:

Travis CI:
blt ci:setup (install drupal)

I get the following output:

Installation complete.  User name: admin  User password: admin       [ok]
Unable to send email. Contact the site administrator if the problem  [error]
persists.
Existing files must be classified according to the currently defined [status]

And I expected this to happen:

The BLT target supposedly tells drush to install without sending notices, but that doesn't happen.

Fix:

Copying the following from Lightning into the travis.yml seems to have fixed it by configuring PHP to use a dummy service for mail.

# Tweak PHP configuration.
  # Copied from Lightning.
  # We were getting an error where drush si is trying to send mail even though the flag to prevent that was set.
  - echo 'max_execution_time = 120' >> drupal.php.ini;
  - echo 'sendmail_path = /bin/true' >> drupal.php.ini;
  - phpenv config-add drupal.php.ini
  - phpenv rehash

[grasmash]

Hm. Seems like a drush or Drupal core bug right? I can implement this workaround in the mean time.