Debugging Rust

I'm all disappointed by the amount of effort put into making these systems debug, debuggable before shipping them. It can be really hard to reason about why the hell are we not making for progress? Who is responsible for progress right now and where the hell are you? I'll tell you a point of confusion that I ran into, which was when we were building the D trace, like the USDT interface for Rust. Futures could effectively be in multiple places at the same time. And then there's another really key bit that now no longer makes sense: stack back trace.