person.rb

class Person < ActiveRecord::Base
  include Backburner::Performable

  queue_priority 500

  def self.make_person(name, options = {})
    self.create name: name, guid: options[:guid]
  end

  def self.work
    Backburner.work('person-jobs','backburner-jobs','person')
  end
end

script.rb

# I am running a separate task in the console by running: Person.work

# When I make a person, the guid field gets transmitted...

Person.make_person 'Andy', guid: '12345'
Person.last #=> #<Person id: 6, name: "Andy", guid: "12345", created_at: "2014-08-27 09:26:15", updated_at: "2014-08-27 09:26:15">

# PROBLEM: When I use Person.async, the guid field is not transmitted -- only the first item...

Person.async.make_person('Andy', {guid: 'test'})
Person.last #=> #<Person id: 8, name: "Andy", guid: nil, created_at: "2014-08-27 09:31:37", updated_at: "2014-08-27 09:31:37">