I played around with getting a Rust kernel module to work before. And I eventually got a "hello world" in my dmesg. But what I realized in so doing was that seemingly 90% of the higher level features of Rust were lost to my module -- essentially I got the language memory security features (borrowing and ownership) but with very little standard library help, which made the whole endeavour seem much less practical still than just using C and libc (because I would have to reimplement a lot of that functionality in Rust -- Kernel Rust, if you will).

I think if the Rust communtiy wants to make it somehow to the Linux (or other UNIX or windows) Kernel space, there needs to be an effort to build Kernel Rust, if there isn't one already..