I (also like sibling comments) respectfully disagree. Rust is aimed and focused as a safe C or a sane C++ substitute, and is meant to intermingle with both. It

I (also like sibling comments) respectfully disagree. Rust is aimed and focused as a safe C or a sane C++ substitute, and is meant to intermingle with both. It is not an application "high" level language. You can use it as such, which is great. For anything you would use C or C++ you can use Rust instead. As a cryptographer I find that great. Regardless of all the lack of latency or other control -- beyond fine tuning -- a garbage collected language makes critical memory choices we want to make instead. There are times we want to swap or use our own memory allocator, never mind having to add a garbage collector in the mix. (There is a good number of languages that scratch that itch, and you can likely link and use your C/Rust code with them.) As far as async: also respectfully disagree. Async is sugar for here is a Future<..>. If you want to poll it locally you can. You can scope it also. If you want to use a cross thread work stealing algorithm you can. But you need like memory management to consciously make these design decisions. This is similarly why a lot of things are not built in in C.