Da Cruuuusher...nope!
Dr. RobÑConstrictors don't kill by "crushing your ribcage," they kill by holding onto their prey's ribcage (constricting) so that it can't breathe in. After a while of this, they prey dies for lack of oxygen, and the snake can eat it in peace, rather than trying to eat a struggling victim. Quite effective, really, and it saves the snake the danger of getting hurt while trying to eat, but none of the bones of the victim will be broken.
Their bodies are very muscular, so as to form coils quickly, and hold them against outward pressure, but NOT to tighten the coil so as to squash what's inside. That would be an inefficient waste of energy.
This crushing of the ribcage is a common misconception about constrictors. It just doesn't happen. The snake wraps 2-3 turns around the victim's chest, and every time the victim breathes out, tightens the coils so the victim can breathe in that much less. Happens this way with all of the constrictors. Doubtful if any of themÑeven the big snake in question in this threadÑcould get its jaws around a human, although the largest ones could certainly kill a human by constriction.