-----> Ruby app detected
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.4.0
-----> Installing dependencies using bundler 1.13.7
       Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
       Warning: the running version of Bundler (1.13.7) is older than the version that created the lockfile (1.14.6). We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.
       Fetching gem metadata from https://rubygems.org/.........
       Fetching version metadata from https://rubygems.org/..
       Fetching dependency metadata from https://rubygems.org/.
       Installing i18n 0.8.1
       Installing rake 12.0.0
       Installing concurrent-ruby 1.0.5
       Installing thread_safe 0.3.6
       Installing minitest 5.10.1
       Installing builder 3.2.3
       Installing erubis 2.7.0
       Installing mini_portile2 2.1.0
       Installing rack 2.0.1
       Installing nio4r 2.0.0 with native extensions
       Installing websocket-extensions 0.1.2
       Installing mime-types-data 3.2016.0521
       Installing arel 7.1.4
       Installing public_suffix 2.0.5
       Installing execjs 2.7.0
       Installing thor 0.19.4
       Installing sass 3.4.23
       Installing flutie 2.0.0
       Installing honeybadger 3.1.2
       Installing method_source 0.8.2
       Installing normalize-rails 3.0.3
       Installing pg 0.20.0 with native extensions
       Installing puma 3.8.2 with native extensions
       Installing rack-timeout 0.4.2
       Using bundler 1.13.7
       Installing tilt 2.0.7
       Installing tzinfo 1.2.3
       Installing nokogiri 1.7.1 with native extensions
       Installing rack-test 0.6.3
       Installing rack-mini-profiler 0.10.2
       Installing sprockets 3.7.1
       Installing websocket-driver 0.6.5 with native extensions
       Installing mime-types 3.1
       Installing addressable 2.5.1
       Installing autoprefixer-rails 6.7.7.2
       Installing uglifier 3.2.0
       Installing bourbon 5.0.0.beta.7
       Installing activesupport 5.0.2
       Installing mail 2.6.5
       Installing rack-canonical-host 0.2.3
       Installing bitters 1.5.0
       Installing globalid 0.4.0
       Installing activemodel 5.0.2
       Installing delayed_job 4.1.2
       Installing skylight 1.2.2 with native extensions
       Installing recipient_interceptor 0.1.2
       Installing activejob 5.0.2
       Installing activerecord 5.0.2
       Installing rails-dom-testing 2.0.2
       Installing loofah 2.0.3
       Installing rails-html-sanitizer 1.0.3
       Installing delayed_job_active_record 4.1.1
       Installing actionview 5.0.2
       Installing actionpack 5.0.2
       Installing actionmailer 5.0.2
       Installing actioncable 5.0.2
       Installing sprockets-rails 3.2.0
       Installing railties 5.0.2
       Installing simple_form 3.4.0
       Installing rails 5.0.2
       Installing sass-rails 5.0.6
       Installing jquery-rails 4.3.1
       Installing suspenders 1.44.0
       Installing title 0.0.7
       Bundle complete! 40 Gemfile dependencies, 64 gems now installed.
       Gems in the groups development and test were not installed.
       Bundled gems are installed into ./vendor/bundle.
       Bundle completed (24.95s)
       Cleaning up the bundler cache.
       Warning: the running version of Bundler (1.13.7) is older than the version that created the lockfile (1.14.6). We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.
-----> Installing node-v6.10.0-linux-x64
-----> Detecting rake tasks
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       rake aborted!
       KeyError: key not found: "SMTP_ADDRESS"
       /tmp/build_59e980588b8965cf050bf7166f6d395c/config/smtp.rb:2:in `fetch'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/config/smtp.rb:2:in `<top (required)>'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/skylight-1.2.2/lib/skylight/probes.rb:81:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/skylight-1.2.2/lib/skylight/probes.rb:81:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `block in require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:259:in `load_dependency'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/config/environments/production.rb:1:in `<top (required)>'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/skylight-1.2.2/lib/skylight/probes.rb:81:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/skylight-1.2.2/lib/skylight/probes.rb:81:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `block in require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:259:in `load_dependency'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/engine.rb:600:in `block (2 levels) in <class:Engine>'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/engine.rb:599:in `each'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/engine.rb:599:in `block in <class:Engine>'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/initializable.rb:30:in `instance_exec'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/initializable.rb:30:in `run'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/initializable.rb:55:in `block in run_initializers'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/initializable.rb:44:in `each'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/initializable.rb:44:in `tsort_each_child'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/initializable.rb:54:in `run_initializers'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/application.rb:352:in `initialize!'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/config/environment.rb:2:in `<top (required)>'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/skylight-1.2.2/lib/skylight/probes.rb:81:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/skylight-1.2.2/lib/skylight/probes.rb:81:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `block in require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:259:in `load_dependency'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/activesupport-5.0.2/lib/active_support/dependencies.rb:293:in `require'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/application.rb:328:in `require_environment!'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/railties-5.0.2/lib/rails/application.rb:448:in `block in run_tasks_blocks'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:62:in `block (2 levels) in define'
       /tmp/build_59e980588b8965cf050bf7166f6d395c/vendor/bundle/ruby/2.4.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
       Tasks: TOP => environment
       (See full trace by running task with --trace)
 !
 !     Precompiling assets failed.
 !
 !     Push rejected, failed to compile Ruby app.
 !     Push failed