title: Rake Aborted due to invalid sequence
body: <p>I am updating one of rails app on my server with new content. It was working fine until the previous day. Now when I try to migrate my db using rake or use any rake commands, I get the following errors:</p>
  
  <pre><code>rake aborted!
  rake aborted!
  invalid byte sequence in US-ASCII
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/trace_output.rb:16:in `block in trace_on'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/trace_output.rb:14:in `map'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/trace_output.rb:14:in `trace_on'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:328:in `trace'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:183:in `display_error_message'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:169:in `rescue in standard_exception_handling'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:159:in `standard_exception_handling'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:88:in `load_rakefile'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:72:in `block in run'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:160:in `standard_exception_handling'
  /var/lib/gems/1.9.1/gems/rake-10.0.4/lib/rake/application.rb:70:in `run'
  (See full trace by running task with --trace)
  </code></pre>
  
  <p>My local machine ruby version is: 2.0.0p0
  And my server ruby version is: ruby 1.9.3p194</p>
  
  <p>Is it because I need to update my ruby version on my server to 2.0.0p0</p>
  
  <p>Thanks</p>