My experimental build is 0.c-9527, and I’ve just run out of pebbles to my slingshot. Instead of just giving me the “out of ammo” message, I also received a message at the top of the screen:
DEBUG: Tried to reload using nonexistent ammo
I assume it’s completely harmless, but I don’t feel like running out of ammo deserves an actual error message by the game itself. I’m calling it a bug.
I’m guessing this has gone unnoticed just because no one uses the slingshot. Go figure.