log to Rails.logger in delayed_job

config/initializers/delayed_job.rb

@@ -6,8 +6,7 @@ Delayed::Worker.default_priority = 10
 Delayed::Worker.delay_jobs = !Rails.env.test?
 Delayed::Worker.sleep_delay = (ENV['DELAYED_JOB_SLEEP_DELAY'].presence || 10).to_f
 
-Delayed::Worker.logger = Logger.new(STDOUT)
-Delayed::Worker.logger.level = Logger::WARN
+Delayed::Worker.logger = Rails.logger
 
 class Delayed::Job
   scope :pending, ->{ where("locked_at IS NULL AND attempts = 0") }