4408
:hello
:hello
:hello
/home/jmettraux/w/rufus-scheduler/lib/rufus/scheduler/job_array.rb:74:in `synchronize': can't be called from trap context (ThreadError)
	from /home/jmettraux/w/rufus-scheduler/lib/rufus/scheduler/job_array.rb:74:in `to_a'
	from /home/jmettraux/w/rufus-scheduler/lib/rufus/scheduler.rb:276:in `jobs'
	from /home/jmettraux/w/rufus-scheduler/lib/rufus/scheduler.rb:127:in `shutdown'
	from t.rb:8:in `block in <main>'
	from t.rb:18:in `call'
	from t.rb:18:in `sleep'
	from t.rb:18:in `<main>'