The Day Our Configs Were Backwards (And How Rust Fixed It)

The Problem We Were Actually Solving

Our game server at Veltrix had a leak that grew by 1.2MB per second under load. No stack traces, no panics—just the alloc counter in /proc/self/status climbing like a drunk spider on caffeine. The game loop looked innocent:

while let Some(player) = next_player() {

handle_player(player); // Nothing allocates here, right?

}