undefined method `return_code=' for nil:NilClass

[JimiSmith]

Hi

I'm seeing the following crash when using typhoeus

For some context this is being called as part of a fluentd plugin. There is the potential that two different hydra instances are being used when in seperate threads but as far as I can tell the same hydra instance will only be used from one thread.

undefined method `return_code=' for nil:NilClass

/opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/ethon-0.11.0/lib/ethon/multi/operations.rb:148:in `check'
/opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/ethon-0.11.0/lib/ethon/multi/operations.rb:164:in `run'
/opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/ethon-0.11.0/lib/ethon/multi/operations.rb:43:in `perform'
/opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/typhoeus-1.3.0/lib/typhoeus/hydra/runnable.rb:15:in `run'
/opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/typhoeus-1.3.0/lib/typhoeus/hydra/memoizable.rb:51:in `run'