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POAutoloading ruby gem warning, may be causing Heroku application error?
 

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  1. POAutoloading ruby gem warning, may be causing Heroku application error?
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    <p>I have a very simple Ruby <a href="http://get-serve.com/" rel="nofollow">Serve</a> prototype website, which works fine locally but doesn't work on Heroku:</p> <pre><code>Aug 02 12:35:40 localp app/web.1: [2013-08-02 11:35:40] INFO WEBrick 1.3.1 Aug 02 12:35:40 localp app/web.1: [2013-08-02 11:35:40] INFO ruby 1.9.3 (2013-06-27) [x86_64-linux] Aug 02 12:35:40 localp app/web.1: [2013-08-02 11:35:40] INFO WEBrick::HTTPServer#start: pid=2 port=4000 Aug 02 12:36:39 localp heroku/web.1: Error R10 (Boot timeout) -&gt; Web process failed to bind to $PORT within 60 seconds of launch Aug 02 12:36:39 localp heroku/web.1: Stopping process with SIGKILL Aug 02 12:36:41 localp heroku/web.1: Process exited with status 137 Aug 02 12:36:41 localp heroku/web.1: State changed from starting to crashed </code></pre> <p>I <em>think</em> it may have something to do with gems not loading properly, as this is the <strong>local</strong> warning I get:</p> <pre><code>[2013-08-02 12:39:22] INFO WEBrick 1.3.1 [2013-08-02 12:39:22] INFO ruby 1.9.3 (2012-10-12) [x86_64-darwin12.2.0] [2013-08-02 12:39:22] INFO WEBrick::HTTPServer#start: pid=79265 port=4000 WARN: serve autoloading 'slim' in a non thread-safe way; explicit require 'slim' suggested. WARN: serve autoloading 'slim' in a non thread-safe way; explicit require 'slim' suggested. WARN: serve autoloading 'slim' in a non thread-safe way; explicit require 'slim' suggested. WARN: serve autoloading 'slim' in a non thread-safe way; explicit require 'slim' suggested. WARN: tilt autoloading 'redcarpet' in a non thread-safe way; explicit require 'redcarpet' suggested. WARN: tilt autoloading 'rdiscount' in a non thread-safe way; explicit require 'rdiscount' suggested. 127.0.0.1 - local [02/Aug/2013 12:40:10] "GET /wireframes/ HTTP/1.1" 200 - 0.2049 127.0.0.1 - local [02/Aug/2013 12:40:10] "GET /styles/style.css HTTP/1.1" 200 765 0.0018 127.0.0.1 - local [02/Aug/2013 12:40:10] "GET /favicon.ico HTTP/1.1" 404 31 0.0026 </code></pre> <p>I have tried requiring gems explicitly but I get the same error message. Here is my Gemfile:</p> <pre><code>source 'https://rubygems.org' ruby '1.9.3' gem 'serve', '1.5.2' gem 'rack-contrib' gem 'compass' gem 'sass-globbing' gem 'rdiscount', :require =&gt; 'rdiscount' gem 'slim', :require =&gt; 'slim' </code></pre> <p>FWIW, here is my Procfile:</p> <pre><code>web: bundle exec rackup config.ru -p $PORT </code></pre> <p>I've had a look all over Stack Overflow. There are some answers but they relate to precompiling assets on Rails. Any ideas what the issue could be? </p>
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