I don't understand why async code is being treated as dangerous or as rocket science. You still maintain complete control, and it's straightforward.

Now that we know about the "futurelock" issue, it will be addressed.

I'm sure Rust and the cargo/crates ecosystem will even grow the ability to mark crates as using async so if you really care to avoid them in your search or blow up at compile time upon import, you can. I've been asking for that feature for unsafe code and transitive dependency depth limits.