Blew up my Yamaha today

[bbh57]

My daughter had my boat out today and the motor oil tank went dry. Not sure why the pump didn't work from the lower tank or why the buzzer didn't go off.

I stopped pulling plugs when I found a bad cylinder, Do you guys think the crank will be shot? Its not locked up.

Its an 98 250 Yamaha 2 stroke, and although it didn't have a lot of hours it may not make sense to rebuild it.