-----> Detecting rake tasks
       Could not detect rake tasks
       ensure you can run `$ bundle exec rake -P` against your app
       and using the production group of your Gemfile.
       rake aborted!
       ActiveRecord::AdapterNotSpecified: database configuration does not specify adapter
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.1/lib/active_record/connection_adapters/connection_specification.rb:170:in `spec'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.1/lib/active_record/connection_handling.rb:53:in `establish_connection'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-activerecord-2.0.11/lib/sinatra/activerecord.rb:50:in `database='
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1217:in `set'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-activerecord-2.0.11/lib/sinatra/activerecord.rb:41:in `database_file='
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1217:in `set'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-activerecord-2.0.11/lib/sinatra/activerecord.rb:22:in `registered'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1400:in `block in register'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1398:in `each'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1398:in `register'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:1969:in `register'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-1.4.7/lib/sinatra/base.rb:2030:in `register'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-activerecord-2.0.11/lib/sinatra/activerecord.rb:63:in `<module:Sinatra>'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/sinatra-activerecord-2.0.11/lib/sinatra/activerecord.rb:10:in `<top (required)>'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/app.rb:2:in `require'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/app.rb:2:in `<top (required)>'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/Rakefile:1:in `require'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/Rakefile:1:in `<top (required)>'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/rake_module.rb:28:in `load'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/rake_module.rb:28:in `load_rakefile'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:687:in `raw_load_rakefile'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:96:in `block in load_rakefile'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:178:in `standard_exception_handling'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:95:in `load_rakefile'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:79:in `block in run'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:178:in `standard_exception_handling'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:77:in `run'
       /tmp/build_2d48ab2ac098831294d09c46a7bebdae/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
       vendor/bundle/bin/rake:17:in `load'
       vendor/bundle/bin/rake:17:in `<main>'