I'm trying to start a Flying-Sphinx (Wooden) but getting Faraday::Error::ParsingError seemingly because something returns a response that looks like Rails default error page for internal server error. I suppose this response is coming from Flying-Sphinx server (although not sure), so I though this is good to report, as it might be a bug there.

What makes it interesting is that our staging server (another Heroku app) starts ok, with same settings (even if I make it use the same database as the (to-be) production server. So I can't figure out what is the difference in my config, but the different heroku apps get different behavior when running the same code on same database.

Indexing works ok, but when I run heroku run flying-sphinx start it produces:

Running `flying-sphinx start` attached to terminal... up, run.1
[2012-10-01 16:13:59 UTC] API Request: GET '/'; params: {}
[2012-10-01 16:13:59 UTC] API Response: #<Hashie::Rash database_port=10318 port=9318 server="ec2-23-22-176-191.compute-1.amazonaws.com" ssh_server="ec2-23-22-176-191.compute-1.amazonaws.com" status="OK">
[2012-10-01 16:13:59 UTC] API Request: POST 'start'; params: {}
/app/vendor/bundle/ruby/1.9.1/gems/json-1.7.5/lib/json/common.rb:155:in `parse': 757: unexpected token at '<!DOCTYPE html> (Faraday::Error::ParsingError)
<html>
<head>
  <title>We're sorry, but something went wrong (500)</title>
  <style type="text/css">
    body { background-color: #fff; color: #666; text-align: center; font-family: arial, sans-serif; }
    div.dialog {
      width: 25em;
      padding: 0 4em;
      margin: 4em auto 0 auto;
      border: 1px solid #ccc;
      border-right-color: #999;
      border-bottom-color: #999;
    }
    h1 { font-size: 100%; color: #f00; line-height: 1.5em; }
  </style>
</head>

<body>
  <!-- This file lives in public/500.html -->
  <div class="dialog">
    <h1>We're sorry, but something went wrong.</h1>
    <p>We've been notified about this issue and we'll take a look at it shortly.</p>
  </div>
</body>
</html>
'
    from /app/vendor/bundle/ruby/1.9.1/gems/json-1.7.5/lib/json/common.rb:155:in `parse'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday_middleware-0.8.8/lib/faraday_middleware/response/parse_json.rb:11:in `block in <class:ParseJson>'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday_middleware-0.8.8/lib/faraday_middleware/response_middleware.rb:48:in `call'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday_middleware-0.8.8/lib/faraday_middleware/response_middleware.rb:48:in `parse'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday_middleware-0.8.8/lib/faraday_middleware/response_middleware.rb:39:in `process_response'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday_middleware-0.8.8/lib/faraday_middleware/response_middleware.rb:32:in `block in call'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday-0.8.4/lib/faraday/response.rb:63:in `on_complete'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday_middleware-0.8.8/lib/faraday_middleware/response_middleware.rb:30:in `call'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday-0.8.4/lib/faraday/response.rb:8:in `call'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday-0.8.4/lib/faraday/request/url_encoded.rb:14:in `call'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday-0.8.4/lib/faraday/connection.rb:226:in `run_request'
    from /app/vendor/bundle/ruby/1.9.1/gems/faraday-0.8.4/lib/faraday/connection.rb:99:in `post'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/api.rb:23:in `block in post'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/api.rb:69:in `call'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/api.rb:69:in `log'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/api.rb:22:in `post'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/configuration.rb:16:in `start_sphinx'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/cli.rb:64:in `start'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/cli.rb:20:in `block in run'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/cli.rb:20:in `each'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/cli.rb:20:in `all?'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/lib/flying_sphinx/cli.rb:20:in `run'
    from /app/vendor/bundle/ruby/1.9.1/gems/flying-sphinx-0.8.4/bin/flying-sphinx:5:in `<top (required)>'
    from bin/flying-sphinx:16:in `load'
    from bin/flying-sphinx:16:in `<main>'