How to get exit status of the rake task using rake API

[saraniyadev]

Is their a possibility to get the exit status of a rake task when executed inside a ruby script.

My config rake method looks like below

desc "Run serverspec to #{host}"
    RSpec::Core::RakeTask.new(host) do |t|
      ENV['TARGET_HOST'] = host
      t.pattern = "spec/cfengine3/*_spec.rb"
    end

My run methods contains below code

Rake.application.init
Rake.application.top_level

I am not able to get exit status of my rake task invoked by top_level