gistfile1.txt

It is deserializing "object: !ruby/object:Class Time" as Class instead of Time. I'm not sure if it is a serialization or deserialization error. 

# Production

irb(main):016:0> YAML::ENGINE.yamler = 'syck'=> "syck"
irb(main):017:0> Delayed::PerformableMethod.new(Time, :now, {}).to_yaml
=> "--- !ruby/struct:Delayed::PerformableMethod \nobject: !ruby/object:Class Time\nmethod_name: :now\nargs: {}\n\n"

# Development

ruby-1.9.2-p290 :005 > YAML::ENGINE.yamler = 'syck'
 => "syck" 
ruby-1.9.2-p290 :006 > Delayed::PerformableMethod.new(Time, :now, {}).to_yaml
 => "--- !ruby/struct:Delayed::PerformableMethod {object: !ruby/class Time, method_name: :now, args: {}}\n"