Wait, think about it. When a Raptor jumps to a point in space, all the oxygen and soforth within the open space of the cabin goes with it. Therefore, it is logical that everything within [and including] the hull of said Raptor is 'swapped out' for the matter at the other end, otherwise we'd have seen nebulae gasses permeating the Raptor's internal atmosphere when Racetrack mis-jumped above the nebula-planet. As such, the wayward Raptor would have 'swapped out' the rock in the mountain and appeared intact within the mountain. Of course, it was probably going relatively fast [as judged by the exit velocity of the other Raptors], so we're talking some major damage to the occupants [not so much as liquification, but they'd be thrown to the front of the cabin violently at the very least], plus the pressure of the mountain would likely crush the Raptor relatively quickly.