Add `#![feature(const_fn_transmute)]` to `rustc_ast`
Add `#![feature(const_fn_transmute)]` to `rustc_ast`

aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust