title: Unicorn Crash Loop
body: <p>I'm trying to setup Unicorn with Nginx on my Ubuntu 11.04 machine. I compiled Ruby from the source, (previously tried RVM but had numerous problems with that) and now after installing unicorn (as well as rails 3.1.0 RC4) it has a strange issue where it crashes and then tries to run the part that's crashing repeatedly, or at least that's what it looks like.</p>
  
  <h2>Output</h2>
  
  <pre><code>root@server-pc:/usr/local/blog# unicorn_rails
  I, [2011-07-15T13:14:50.577149 #23269]  INFO -- : listening on addr=0.0.0.0:8080 fd=3
  I, [2011-07-15T13:14:50.577677 #23269]  INFO -- : worker=0 spawning...
  I, [2011-07-15T13:14:50.579412 #23269]  INFO -- : master process ready
  I, [2011-07-15T13:14:50.581087 #23271]  INFO -- : worker=0 spawned pid=23271
  I, [2011-07-15T13:14:50.581599 #23271]  INFO -- : Refreshing Gem list
  /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/runtime.rb:31:in `block in setup': You have already activated rack 1.3.1, but your Gemfile requires rack 1.3.0. Consider using bundle exec. (Gem::LoadError)
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `block in each'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `each'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `each'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/runtime.rb:17:in `setup'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler.rb:107:in `setup'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/setup.rb:7:in `&lt;top (required)&gt;'
          from &lt;internal:lib/rubygems/custom_require&gt;:33:in `require'
          from &lt;internal:lib/rubygems/custom_require&gt;:33:in `rescue in require'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from /usr/local/blog/config/boot.rb:6:in `&lt;top (required)&gt;'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from /usr/local/blog/config/application.rb:1:in `&lt;top (required)&gt;'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from /usr/local/blog/config/environment.rb:2:in `&lt;top (required)&gt;'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from config.ru:4:in `block in &lt;main&gt;'
          from /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.3.1/lib/rack/builder.rb:51:in `instance_eval'
          from /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.3.1/lib/rack/builder.rb:51:in `initialize'
          from config.ru:1:in `new'
          from config.ru:1:in `&lt;main&gt;'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn.rb:44:in `eval'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn.rb:44:in `block in builder'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/bin/unicorn_rails:139:in `call'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/bin/unicorn_rails:139:in `block in rails_builder'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:673:in `call'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:673:in `build_app!'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:549:in `init_worker_process'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:567:in `worker_loop'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:475:in `spawn_missing_workers'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:135:in `start'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/bin/unicorn_rails:209:in `&lt;top (required)&gt;'
          from /usr/local/bin/unicorn_rails:19:in `load'
          from /usr/local/bin/unicorn_rails:19:in `&lt;main&gt;'
  E, [2011-07-15T13:14:52.259536 #23269] ERROR -- : reaped #&lt;Process::Status: pid 23271 exit 1&gt; worker=0
  I, [2011-07-15T13:14:52.259859 #23269]  INFO -- : worker=0 spawning...
  I, [2011-07-15T13:14:52.263092 #23274]  INFO -- : worker=0 spawned pid=23274
  I, [2011-07-15T13:14:52.263665 #23274]  INFO -- : Refreshing Gem list
  ^C/usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/runtime.rb:31:in `block in setup': You have already activated rack 1.3.1, but your Gemfile requires rack 1.3.0. Consider using bundle exec. (Gem::LoadError)
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `block in each'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `each'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `each'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/runtime.rb:17:in `setup'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler.rb:107:in `setup'
          from /usr/local/lib/ruby/gems/1.9.1/gems/bundler-1.0.15/lib/bundler/setup.rb:7:in `&lt;top (required)&gt;'
          from &lt;internal:lib/rubygems/custom_require&gt;:33:in `require'
          from &lt;internal:lib/rubygems/custom_require&gt;:33:in `rescue in require'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from /usr/local/blog/config/boot.rb:6:in `&lt;top (required)&gt;'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from /usr/local/blog/config/application.rb:1:in `&lt;top (required)&gt;'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from /usr/local/blog/config/environment.rb:2:in `&lt;top (required)&gt;'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from &lt;internal:lib/rubygems/custom_require&gt;:29:in `require'
          from config.ru:4:in `block in &lt;main&gt;'
          from /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.3.1/lib/rack/builder.rb:51:in `instance_eval'
          from /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.3.1/lib/rack/builder.rb:51:in `initialize'
          from config.ru:1:in `new'
          from config.ru:1:in `&lt;main&gt;'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn.rb:44:in `eval'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn.rb:44:in `block in builder'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/bin/unicorn_rails:139:in `call'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/bin/unicorn_rails:139:in `block in rails_builder'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:673:in `call'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:673:in `build_app!'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:549:in `init_worker_process'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:567:in `worker_loop'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:475:in `spawn_missing_workers'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:486:in `maintain_worker_count'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/lib/unicorn/http_server.rb:270:in `join'
          from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.0.1/bin/unicorn_rails:209:in `&lt;top (required)&gt;'
          from /usr/local/bin/unicorn_rails:19:in `load'
          from /usr/local/bin/unicorn_rails:19:in `&lt;main&gt;'
  E, [2011-07-15T13:14:53.967107 #23269] ERROR -- : reaped #&lt;Process::Status: pid 23274 exit 1&gt; worker=0
  I, [2011-07-15T13:14:53.967420 #23269]  INFO -- : master complete
  </code></pre>
  
  <p>This project was working just fine in Windows (minus the Unicorn gem as it's not compatible with Windows).</p>
  
  <h2>Project Gems</h2>
  
  <pre><code> root@server-pc:/usr/local/blog# bundle list
  Gems included by the bundle:
    * actionmailer (3.1.0.rc4)
    * actionpack (3.1.0.rc4)
    * activemodel (3.1.0.rc4)
    * activerecord (3.1.0.rc4)
    * activeresource (3.1.0.rc4)
    * activesupport (3.1.0.rc4)
    * ansi (1.3.0)
    * arel (2.1.3)
    * bcrypt-ruby (2.1.4)
    * builder (3.0.0)
    * bundler (1.0.15)
    * capistrano (2.6.0)
    * devise (1.4.2)
    * erubis (2.7.0)
    * execjs (1.2.0)
    * highline (1.6.2)
    * hike (1.1.0)
    * i18n (0.6.0)
    * jquery-rails (1.0.12)
    * kgio (2.6.0)
    * libv8 (3.3.10.2)
    * mail (2.3.0)
    * mime-types (1.16)
    * multi_json (1.0.3)
    * net-scp (1.0.4)
    * net-sftp (2.0.5)
    * net-ssh (2.1.4)
    * net-ssh-gateway (1.1.0)
    * orm_adapter (0.0.5)
    * polyglot (0.3.1)
    * rack (1.3.0)
    * rack-cache (1.0.2)
    * rack-mount (0.8.1)
    * rack-ssl (1.3.2)
    * rack-test (0.6.0)
    * rails (3.1.0.rc4)
    * railties (3.1.0.rc4)
    * raindrops (0.7.0)
    * rake (0.9.2)
    * rdoc (3.8)
    * redcarpet (1.17.2)
    * sass (3.1.4)
    * sass-rails (3.1.0.rc.4)
    * sprockets (2.0.0.beta.10)
    * sqlite3 (1.3.3)
    * therubyracer (0.9.2)
    * thor (0.14.6)
    * tilt (1.3.2)
    * treetop (1.4.9)
    * turn (0.8.2)
    * tzinfo (0.3.29)
    * uglifier (1.0.0)
    * unicorn (4.0.1)
    * warden (1.0.4)
  </code></pre>
  
  <h2>Installed Gems (Not Necessarily Related to Rails Project)</h2>
  
  <pre><code>root@server-pc:/usr/local/blog# gem list
  
  *** LOCAL GEMS ***
  
  actionmailer (3.1.0.rc4)
  actionpack (3.1.0.rc4)
  activemodel (3.1.0.rc4)
  activerecord (3.1.0.rc4)
  activeresource (3.1.0.rc4)
  activesupport (3.1.0.rc4)
  addressable (2.2.6)
  ansi (1.3.0)
  arel (2.1.3)
  bcrypt-ruby (2.1.4)
  builder (3.0.0)
  bundler (1.0.15)
  capistrano (2.6.1.pre, 2.6.0)
  devise (1.4.2, 1.2.rc2)
  erubis (2.7.0)
  execjs (1.2.0)
  faraday (0.5.7)
  highline (1.6.2)
  hike (1.1.0)
  i18n (0.6.0)
  jquery-rails (1.0.12)
  kgio (2.6.0)
  libv8 (3.3.10.2 x86-linux)
  mail (2.3.0)
  mime-types (1.16)
  minitest (1.6.0)
  multi_json (1.0.3, 0.0.5)
  multipart-post (1.1.2)
  net-ldap (0.1.1)
  net-scp (1.0.4)
  net-sftp (2.0.5)
  net-ssh (2.1.4)
  net-ssh-gateway (1.1.0)
  nokogiri (1.4.7)
  oa-basic (0.2.0.beta5)
  oa-core (0.2.0.beta5)
  oa-enterprise (0.2.0.beta5)
  oa-more (0.2.0.beta5)
  oa-oauth (0.2.0.beta5)
  oa-openid (0.2.0.beta5)
  oauth (0.4.5)
  oauth2 (0.1.1)
  omniauth (0.2.0.beta5)
  orm_adapter (0.0.5)
  polyglot (0.3.1)
  pyu-ruby-sasl (0.0.3.3)
  rack (1.3.1, 1.3.0)
  rack-cache (1.0.2)
  rack-mount (0.8.1)
  rack-openid (1.2.0)
  rack-ssl (1.3.2)
  rack-test (0.6.0)
  rails (3.1.0.rc4)
  railties (3.1.0.rc4)
  raindrops (0.7.0)
  rake (0.9.2, 0.8.7)
  rdoc (3.8, 2.5.8)
  redcarpet (1.17.2)
  rest-client (1.6.3)
  ruby-openid (2.1.8)
  ruby-openid-apps-discovery (1.2.0)
  rubyntlm (0.1.1)
  sass (3.1.4)
  sass-rails (3.1.0.rc.4)
  sprockets (2.0.0.beta.10)
  sqlite3 (1.3.3)
  therubyracer (0.9.2)
  thor (0.14.6)
  tilt (1.3.2)
  treetop (1.4.9)
  turn (0.8.2)
  tzinfo (0.3.29)
  uglifier (1.0.0)
  unicorn (4.0.1, 4.0.0.2.g19f7)
  warden (1.0.4)
  </code></pre>
  
  <h2>Ruby Version</h2>
  
  <pre><code>root@server-pc:/usr/local/blog# ruby -v
  ruby 1.9.2p180 (2011-02-18 revision 30909) [i686-linux]
  </code></pre>
  
  <p>This is on a server machine that I'm deploying it to, so I'd much rather have Ruby/Rails/Unicorn all as root.</p>
  
  <h2>Where can I go from here to get Unicorn to properly work? Is it a misconfiguration (or lack of configuration) on my part, or is it a bug in Unicorn?</h2>
  
  <p>If there is anything I'm missing to help you help me please let me know.</p>