A simple bug when as soon as u eat something before the eating action occurs you will crash and the log will come up in the launcher
Step By Step Guide (Simple)
1. Create a cheat enabled creative world.
2. Press (E) and grab steak from your creative inventory
3. Exit your creative inventory and type /gamemode s
4. Right-click and hold your steak and you will then crash
Fixed in 15w49b. Please don't report bugs of outdated snapshots.