I had to dig farther on the compile time execution stuff. It's actually pretty cool-looking. Recommend digging into it. I don't know that it's a killer enough feature to draw me away from Rust's guarantees, but it is interesting.
It is difficult to overstate how useful compile-time execution is in practice. I can't imagine using a systems language without it now. The term "modern C++" largely denotes when compile-time execution was added to that language.
I would love to see Rust get compile-time execution that is as capable as Zig or C++20.