A first look at Rust in the 6.1 kernel

Note that - while this is not a supported configuration - the stable Rust compiler is technically quite capable of compiling code using the unstable features which existed when it shipped, as this is exactly how it builds itself and its standard library both of which of course use unstable features. So in principle Rust for Linux could advise builders to use the stable Rust compiler, but just tell it to pretend it isn't a stable Rust compiler (one environment variable change), so as to take advantage of any QA benefits as presumably your distribution's stable Rust 1.62 compiler was actually tested while some random nightly (which has unstable features since it wasn't supported anyway) is not tested.