Mailer Exceptions not showing

gistfile1.txt

Using Rails 5. Why won't my Mailer show exceptions in the log?

- ActionMailer Config from development.rb:
[...]
  config.action_mailer.raise_delivery_errors = true
  config.action_mailer.perform_deliveries = true

  config.action_mailer.logger = Logger.new($stdout) # this is experimental, doesn't seem to make a difference

  config.action_mailer.perform_caching = false

  config.action_mailer.delivery_method = :file
[...]


- Mailer code: the commented out @url line works fine. The uncommented @url line doesn't, but it doesn't log an exception! Why?
class LoginMailer < ApplicationMailer
  def forgot_password(user)
    @user = user
    @url = reset_password_path(@user.password_reset_token)
    # @url = 'asdf'
    mail(to: @user.email, subject: t('login.forgot_your_password'))
  end
end

- Templates:
  - ERB:
<%= t('login.forgot_your_password') %>

<%= t('login.click_here_to_reset_it') %> <%= @url %>
  - Slim:
.container
  .row
    .col-sm-12.col-md-4.col-md-offset-4
      .pad-top-100
      h4.text-center = t('login.forgot_your_password')
      hr

      p.text-center = t('login.click_here_to_reset_password_html', url: @url)


- Logs with URL Helper:
Started POST "/forgot_your_password" for ::1 at 2016-08-12 12:25:18 -0300
Processing by LoginController#do_forgot_your_password as HTML
  Parameters: {"authenticity_token"=>"I9AX/ABqz9hx8DMBrPv7HgDIiavuVQ6geY/MN3KDCPnrGfCHPMSPn2HTdDknqS/qC3OEDYntlRtD2Fvbk1zyFw==", "email"=>"narsa@inyourhood.ca"}
  User Load (0.4ms)  SELECT  `users`.* FROM `users` WHERE `users`.`email` = 'narsa@inyourhood.ca' LIMIT 1
   (0.2ms)  BEGIN
  SQL (0.4ms)  UPDATE `users` SET `password_reset_token` = '1471015518:7b8b0c39d312b3b5f04fa1f27721053a', `updated_at` = '2016-08-12 15:25:18' WHERE `users`.`id` = 1
   (1.4ms)  COMMIT
[ActiveJob] Enqueued ActionMailer::DeliveryJob (Job ID: 95d9b5ad-6619-400e-baeb-cca35b0ba0b6) to Async(mailers) with arguments: "LoginMailer", "forgot_password", "deliver_now", #<GlobalID:0x007fae24d088b8 @uri=#<URI::GID gid://locatrix/User/1>>
  User Load (1.9ms)  SELECT  `users`.* FROM `users` WHERE `users`.`id` = 1 LIMIT 1
[ActiveJob] [ActionMailer::DeliveryJob] [95d9b5ad-6619-400e-baeb-cca35b0ba0b6] Performing ActionMailer::DeliveryJob from Async(mailers) with arguments: "LoginMailer", "forgot_password", "deliver_now", #<GlobalID:0x007fae25478d28 @uri=#<URI::GID gid://locatrix/User/1>>
D, [2016-08-12T12:25:18.490484 #87308] DEBUG -- : LoginMailer#forgot_password: processed outbound mail in 14.2ms
[ActiveJob] [ActionMailer::DeliveryJob] [95d9b5ad-6619-400e-baeb-cca35b0ba0b6] Performed ActionMailer::DeliveryJob from Async(mailers) in 15.95ms
  Rendering login/do_forgot_your_password.html.slim within layouts/application
  Rendered login/do_forgot_your_password.html.slim within layouts/application (5.5ms)
Completed 200 OK in 111ms (Views: 41.5ms | ActiveRecord: 7.3ms)


- Logs w/o URL Helper:
Started POST "/forgot_your_password" for ::1 at 2016-08-12 12:26:10 -0300
Processing by LoginController#do_forgot_your_password as HTML
  Parameters: {"authenticity_token"=>"4XN/ImBQwLDZHTTNH9RJATHHKQX84ozYpFKYUFfs55UpuphZXP6A98k+c/WUhp31Onwko5taF2OeBQ+8tjMdew==", "email"=>"narsa@inyourhood.ca"}
  User Load (1.1ms)  SELECT  `users`.* FROM `users` WHERE `users`.`email` = 'narsa@inyourhood.ca' LIMIT 1
   (0.2ms)  BEGIN
  SQL (0.9ms)  UPDATE `users` SET `password_reset_token` = '1471015570:bcf2ea37ab1c7d55f977f701fa2d0dbd', `updated_at` = '2016-08-12 15:26:10' WHERE `users`.`id` = 1
   (1.3ms)  COMMIT
[ActiveJob] Enqueued ActionMailer::DeliveryJob (Job ID: 683622c0-86a3-4cd2-882d-b45091705d5d) to Async(mailers) with arguments: "LoginMailer", "forgot_password", "deliver_now", #<GlobalID:0x007fae256a7b08 @uri=#<URI::GID gid://locatrix/User/1>>
  User Load (5.5ms)  SELECT  `users`.* FROM `users` WHERE `users`.`id` = 1 LIMIT 1
  Rendering login/do_forgot_your_password.html.slim within layouts/application
[ActiveJob] [ActionMailer::DeliveryJob] [683622c0-86a3-4cd2-882d-b45091705d5d] Performing ActionMailer::DeliveryJob from Async(mailers) with arguments: "LoginMailer", "forgot_password", "deliver_now", #<GlobalID:0x007fae22bdc608 @uri=#<URI::GID gid://locatrix/User/1>>
  Rendered login/do_forgot_your_password.html.slim within layouts/application (4.0ms)
[ActiveJob] [ActionMailer::DeliveryJob] [683622c0-86a3-4cd2-882d-b45091705d5d]   Rendering login_mailer/forgot_password.html.slim within layouts/mailer
[ActiveJob] [ActionMailer::DeliveryJob] [683622c0-86a3-4cd2-882d-b45091705d5d]   Rendered login_mailer/forgot_password.html.slim within layouts/mailer (4.3ms)
Completed 200 OK in 116ms (Views: 75.2ms | ActiveRecord: 4.8ms)


D, [2016-08-12T12:26:10.572345 #87308] DEBUG -- : LoginMailer#forgot_password: processed outbound mail in 245.1ms
I, [2016-08-12T12:26:10.584968 #87308]  INFO -- : Sent mail to narsa@inyourhood.ca (12.3ms)
D, [2016-08-12T12:26:10.585044 #87308] DEBUG -- : Date: Fri, 12 Aug 2016 12:26:10 -0300
From: support@inyourhood.ca
To: narsa@inyourhood.ca
Message-ID: <57adea928d146_1550c3fd710623c8052595@Narsimhams-MacBook.local.mail>
Subject: Forgot your password?
Mime-Version: 1.0
Content-Type: text/html;
 charset=UTF-8
Content-Transfer-Encoding: 7bit

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <style>
      /* Email styles need to be inline */
    </style>
  </head>

  <body>
    <div class="container"><div class="row"><div class="col-sm-12 col-md-4 col-md-offset-4"><div class="pad-top-100"></div><h4 class="text-center">Forgot your password?</h4><hr /><p class="text-center">Click <a href="asdf">here</a> to reset your password.</p></div></div></div>
  </body>
</html>

[ActiveJob] [ActionMailer::DeliveryJob] [683622c0-86a3-4cd2-882d-b45091705d5d] Performed ActionMailer::DeliveryJob from Async(mailers) in 258.62ms

The helper reset_password_path works in Rails console.

  def forgot_password(user)
    puts "\n\n\nHELLO"

    @user = user
    # @url = reset_password_path(@user.password_reset_token)

    puts "\n\n\n"
    puts "@url: #{@url}\n\n\n\n"

    @url = 'asdf'
    mail(to: @user.email, subject: t('login.forgot_your_password'))
  end

  get  '/forgot_your_password/:token', to: 'login#reset_password', as: 'reset_password'