Why am I getting the failure notice?

<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
  Email
</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
        <h4 class="modal-title" id="myModalLabel">Share my Info with someone</h4>
      </div>
      <div class="modal-body">
        <%= form_tag profile_email_profile_path(@profile), method: :put do %>
          <%= label_tag :destination, "What email address would you like to send this to?" %>
          <%= text_field_tag :destination %>
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
        <%= submit_tag "Send Email", class: "btn btn-primary" %>
        <% end %>
      </div>
    </div>
  </div>
</div>

class Share < ActionMailer::Base
    default_url_options[:host] = "localhost:3000"
  default from: "from@example.com"

  def profile(profile, destination)
   @profile = profile
   mail(to: destination, subject: "sent you stuff")
  end
end

Started PUT "/profiles/1/email_profile" for 127.0.0.1 at 2014-08-29 12:12:44 +1000
Processing by ProfilesController#email_profile as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"lNgA2/SNZCifVx33Hp53YAQxRPRW7lRsHsJuETSNKgE=", "destination"=>"joe.smith@gmail.com", "commit"=>"Send Email", "profile_id"=>"1"}
  User Load (0.2ms)  SELECT  "users".* FROM "users"  WHERE "users"."id" = 1  ORDER BY "users"."id" ASC LIMIT 1
  Profile Load (0.1ms)  SELECT  "profiles".* FROM "profiles"  WHERE "profiles"."id" = ? LIMIT 1  [["id", 1]]
  Rendered share/profile.html.erb (0.3ms)
  Rendered share/profile.text.erb (0.2ms)

Share#profile: processed outbound mail in 11.0ms
Redirected to http://localhost:3000/profiles/1
Completed 302 Found in 16ms (ActiveRecord: 0.3ms)

Started GET "/profiles/1" for 127.0.0.1 at 2014-08-29 12:12:44 +1000
Processing by ProfilesController#show as HTML
  Parameters: {"id"=>"1"}
  User Load (0.1ms)  SELECT  "users".* FROM "users"  WHERE "users"."id" = 1  ORDER BY "users"."id" ASC LIMIT 1
  Profile Load (0.1ms)  SELECT  "profiles".* FROM "profiles"  WHERE "profiles"."id" = ? LIMIT 1  [["id", 1]]
  Rendered profiles/show.html.erb within layouts/application (0.9ms)
  Profile Load (0.1ms)  SELECT  "profiles".* FROM "profiles"  WHERE "profiles"."user_id" = ? LIMIT 1  [["user_id", 1]]
Completed 200 OK in 10ms (Views: 8.8ms | ActiveRecord: 0.3ms)

<p>sent you their information.</p>

sent you their information.

# Don't care if the mailer can't send.
  config.action_mailer.raise_delivery_errors = true

  config.action_mailer.delivery_method = :smtp

  # Gmail SMTP server setup
  ActionMailer::Base.smtp_settings = {
    :address => "smtp.gmail.com",
    :enable_starttls_auto => true,
    :port => 587,
    :authentication => :plain,
    :user_name => "joe.smith@gmail.com",
    :password => '46292839'
  }
# Raises error for missing translations
  # config.action_view.raise_on_missing_translations = true
  config.action_mailer.default_url_options = { :host => 'localhost:3000' }

  # false prevents mail from being sent in development environment
  config.action_mailer.perform_deliveries = true