delayed_job gem won't start in production (Rails 4) - ruby-on-rails-4

Question

I'm having a problem with getting delayed_job to start in the production environment. Everything works as it should in development just using the rake jobs:work command, but after deploying to my server with Capistrano, and hours of failed attempts later, I cannot figure out how to get DJ running.
As it says to do on the github repository for delayed_job, I made sure I bundled the "daemons" gem, and also attempted to start it with the command "bin/delayed_job start" instead of "script/delayed_job start" since I'm on rails 4. I've also ran the required generator "rails generate delayed_job" which did generate this file inside the bin directory of my project:
#!/usr/bin/env ruby
require File.expand_path(File.join(File.dirname(__FILE__), '..', 'config', 'environment'))
require 'delayed/command'
Delayed::Command.new(ARGV).daemonize
The error I'm consistently getting is -bash: bin/delayed_job: No such file or directory which I think could be since I'm using rvm.
As for my gemfile, I've included delayed_job_active_record and daemons. At this point I'm completely stumped and out of links to explore.
source 'https://rubygems.org'
ruby '2.0.0'
gem 'rails', '4.0.0'
# Rails defaults
gem 'sass-rails', '~> 4.0.0'
gem 'bundler'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.0.0'
gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 1.2'
# learn-rails
gem 'anjlab-bootstrap-rails', :require => 'bootstrap-rails', :github => 'anjlab/bootstrap-rails'
gem 'figaro'
gem 'gibbon'
gem 'high_voltage'
gem 'simple_form', '>= 3.0.0.rc'
gem 'delayed_job_active_record', '~> 4.0.0'
group :development, :test do
gem 'sqlite3'
gem 'better_errors'
gem 'quiet_assets'
gem 'capistrano', '~> 2.15.5'
gem 'rvm-capistrano'
gem 'rspec-rails'
end
group :test do
gem "factory_girl_rails", "~> 4.0"
gem 'capybara'
gem 'poltergeist'
gem "faker", "~> 1.2.0"
end
group :production do
gem 'unicorn'
gem 'pg'
gem 'daemons'
end

Answer 1

Make sure the first line in bin/delayed_job points to a valid Ruby executable. You're using just ruby which probably can't be resolved. rvm is adding the full path to ruby when you cd into the rails_root directory, but that's not happening when the script is executed. One slightly hacky solution would be to cd into the directory, do a which ruby and write that into bin/delayed_job, such as: #!<path_to_ruby>. No need to call /usr/bin/env since Capistrano is doing this already.