Async Rust Never Left MVP: I Validated It Against My Real Codebase and Found Exactly the Edge Cases That HN Post Predicted 60% of projects that adopt Async Rust in production report having rewritten significant parts of their async layer within the first year. Yeah, you read that right. And that doesn't mean Async Rust is useless — it means the ecosystem promised stability before it had it, and the industry bought that promise without reading the fine print. When I saw the HN post with 434 points arguing that Async Rust is still a glorified MVP, my immediate reaction was defensive. I'd just finished documenting Bun's jump from Zig to Rust and had built up some real enthusiasm for the language. But the post named four concrete problems: executor leaks, cancellation safety, incomprehensible error messages, and Pin hell. These weren't complaints from someone who played with it for two hours. They were scars.…