ruby - Rails Whenever set environment -

i'm using whenever generate cronjobs rails application. rails 4.2.1

in schedule.rb have that:

every 13.minutes    rake "crons:dosomething" end 

this generates cronjoblike this:

 rails_env=production bundle exec rake crons:dosomething 

problem 1 runs cronjobs production environment ... need cronjob in test , development

i tried this:

every 13.minutes    rake "crons:dosomething", :environment => :development    rake "crons:dosomething", :environment => :test    rake "crons:dosomething", :environment => :production end 

problem here second rake runs before first 1 finished there solution problem?