[Bug rust/119353] [15 regression] Rust fails to build (build failure: error[E0554]: `#![feature]` may not be used on the stable release channel)

[doko at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119353

--- Comment #8 from Matthias Klose <doko at gcc dot gnu.org> ---
mentioned on irc, #gcc:
https://github.com/Rust-GCC/gccrs/commit/1bd6cdbd8d2a6e0bfaaf5c8ef61ca453f09899cf

that works for me on x86_64-linux-gnu at least