Clean up

lib/crono/cli.rb

@@ -62,7 +62,7 @@ module Crono
       logger.info 'Jobs:'
       Crono.scheduler.jobs.each do |job|
         logger.info "'#{job.performer}' with rule '#{job.period.description}'"\
-                    "next time will perform at #{job.next}"
+                    " next time will perform at #{job.next}"
       end
     end
 
@@ -80,7 +80,7 @@ module Crono
     end
 
     def start_working_loop
-      while true
+      loop do
         next_time, jobs = Crono.scheduler.next_jobs
         sleep(next_time - Time.now)
         jobs.each(&:perform)

lib/crono/job.rb

@@ -60,9 +60,7 @@ module Crono
     end
 
     def perform_job
-      performer_instance = performer.new
-      performer_instance.instance_variable_set(:@_crono_job, self)
-      performer_instance.perform
+      performer.new.perform
       finished_time_sec = format('%.2f', Time.now - last_performed_at)
     rescue StandardError => e
       handle_job_fail(e, finished_time_sec)