It seems rust syntax is more complex than C4738974389, and may require some specific runtime (the syntax can do a "heavy free" in your back if I am not too much mistaken), hence you would need more time and effort to write a naive rust compiler.

That said, in linux, it will be, probably, rust with tons of extensions, so more time and effort to write such a naive rust compiler. I hope it won't be the case, and Linus T. will care.

In a sane world, linux rust code should compile with a simple, self-compiling with minimal SDK, rust-written rust compilers. Are we is such a sane world?

And yes, rust syntax is still billions of times less toxic than c++ syntax.

A large chuck used to be shell scripts and Perl. Not sure if this is still the case but always made the Windows experience worse.