ruby - Dashing does not run on Heroku -

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i'm trying deploy dashing heroku. everthing runs on localhost. deploying instructions provided github page

it seems backports gem.

below heroku log files 

2014-11-26t21:12:22.141799+00:00 heroku[web.1]: state changed crashed starting 2014-11-26t21:12:32.932667+00:00 heroku[web.1]: starting process command `bundle exec thin start -r config.ru -e production -p 23294` 2014-11-26t21:12:40.618062+00:00 app[web.1]: /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.1/io/open.rb:2:in `close': bad file descriptor - /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.1/io/open.rb (errno::ebadf) 2014-11-26t21:12:40.618144+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.1/io/open.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618185+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618165+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618206+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:22:in `block in require_relative_dir' 2014-11-26t21:12:40.618123+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.1/io/open.rb:2:in `open' 2014-11-26t21:12:40.618261+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.1/io.rb:3:in `<top (required)>' 2014-11-26t21:12:40.618392+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618224+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:21:in `each' 2014-11-26t21:12:40.618243+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:21:in `require_relative_dir' 2014-11-26t21:12:40.618299+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618318+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:22:in `block in require_relative_dir' 2014-11-26t21:12:40.618430+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.2.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618410+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618336+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:21:in `each' 2014-11-26t21:12:40.618280+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618355+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:21:in `require_relative_dir' 2014-11-26t21:12:40.618373+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.1.rb:3:in `<top (required)>' 2014-11-26t21:12:40.618467+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618448+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618485+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.3.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618504+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618541+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/1.9.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618522+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618559+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618634+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618653+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/2.0.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618672+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618578+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618596+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/2.0.0.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618616+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618690+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618709+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/2.1.0.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618803+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618763+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/2.1.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618784+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618820+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports.rb:3:in `<top (required)>' 2014-11-26t21:12:40.618745+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require_with_backports' 2014-11-26t21:12:40.618727+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/backports-3.6.0/lib/backports/tools.rb:343:in `require' 2014-11-26t21:12:40.618857+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/sinatra-contrib-1.4.2/lib/sinatra/capture.rb:3:in `<top (required)>' 2014-11-26t21:12:40.618876+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/sinatra-contrib-1.4.2/lib/sinatra/content_for.rb:2:in `require' 2014-11-26t21:12:40.618839+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/sinatra-contrib-1.4.2/lib/sinatra/capture.rb:3:in `require' 2014-11-26t21:12:40.618894+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/sinatra-contrib-1.4.2/lib/sinatra/content_for.rb:2:in `<top (required)>' 2014-11-26t21:12:40.618951+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/dashing-1.3.4/lib/dashing.rb:3:in `require' 2014-11-26t21:12:40.618913+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/dashing-1.3.4/lib/dashing/app.rb:3:in `require' 2014-11-26t21:12:40.618969+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/dashing-1.3.4/lib/dashing.rb:3:in `<top (required)>' 2014-11-26t21:12:40.618990+00:00 app[web.1]:    config.ru:1:in `require' 2014-11-26t21:12:40.618932+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/dashing-1.3.4/lib/dashing/app.rb:3:in `<top (required)>' 2014-11-26t21:12:40.619046+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize' 2014-11-26t21:12:40.619008+00:00 app[web.1]:    config.ru:1:in `block in <main>' 2014-11-26t21:12:40.619028+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval' 2014-11-26t21:12:40.619065+00:00 app[web.1]:    config.ru:1:in `new' 2014-11-26t21:12:40.619102+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/thin-1.6.2/lib/rack/adapter/loader.rb:33:in `eval' 2014-11-26t21:12:40.619084+00:00 app[web.1]:    config.ru:1:in `<main>' 2014-11-26t21:12:40.619120+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/thin-1.6.2/lib/rack/adapter/loader.rb:33:in `load' 2014-11-26t21:12:40.619211+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/thin-1.6.2/lib/thin/runner.rb:155:in `run!' 2014-11-26t21:12:40.619230+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/thin-1.6.2/bin/thin:6:in `<top (required)>' 2014-11-26t21:12:40.619157+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/thin-1.6.2/lib/thin/controllers/controller.rb:72:in `start' 2014-11-26t21:12:40.619193+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/thin-1.6.2/lib/thin/runner.rb:199:in `run_command' 2014-11-26t21:12:40.619249+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/bin/thin:23:in `load' 2014-11-26t21:12:40.619268+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/bin/thin:23:in `<main>' 2014-11-26t21:12:40.619139+00:00 app[web.1]:    /app/vendor/bundle/ruby/2.0.0/gems/thin-1.6.2/lib/thin/controllers/controller.rb:182:in `load_rackup_config' 2014-11-26t21:12:41.561471+00:00 heroku[web.1]: state changed starting crashed

i fixed running:

bundle update backports

and making sure gemfile.lock updated , committed.


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