Restarting delayed_job if it has been unexpectedly stopped or crashed using "rake jobs:rescue" in production environment

jobs.rake

namespace :jobs do
  desc "Restarts delayed_job if it has been unexpectedly stopped or crashed"
  task :rescue do
    raise "Not in production environment" unless Rails.env.production?

    pid_file = "#{Rails.root}/tmp/pids/delayed_job.pid"
    restart = false
    if File.exist?(pid_file)
      pid = File.read(pid_file).strip.to_i
      begin
        Process.kill(0, pid)
      rescue Errno::ESRCH # no such process
        File.unlink(pid_file)
        restart = true
      end
      puts "Delayed Job is running"
    else
      puts "Delayed Job is not running"
      restart = true
    end

    run "cd #{Rails.root};RAILS_ENV=#{Rails.env} script/delayed_job start" if restart
  end
end

schedule.rb

every 12.hours do
  rake "jobs:rescue"
end