ScratchPad.recorded << :con_pre Thread.current[:in_concurrent_rb] = true if t = Thread.current[:wait_for] Thread.pass until t.backtrace && t.backtrace.any? { |call| call.include? 'require' } && t.stop? end if Thread.current[:con_raise] raise "con1" end ScratchPad.recorded << :con_post