In the movie, the last we see of FN-1824 (the Stormtrooper guarding the interrogation room) is him dropping his blaster as he walks away. Does anyone know what happened to him after that scene? He would be walking through the corridors without his weapon, which I'm sure would get him in a lot of trouble, not to mention the fact that it would be very easy to figure out that it was he who let Rey escape*—never mind that he was the victim of a Jedi Mind Trick. Considering Kylo Ren's fit of destructive rage upon discovering that Rey is gone, I can expect that he would be in some serious hot water—that is, if he survived.
*Remember how easy it was for them earlier in the movie to search the records to attempt to determine who helped Poe Dameron escape (before Kylo Ren immediately declared who it was)?