env::set_var("RUSTDOCFLAGS", env::var("RUSTDOCFLAGS").unwrap_or(String::new()) + &rustflags);
// Ensure that the right toolchain is used
- env::set_var("RUSTUP_TOOLCHAIN", env!("RUSTUP_TOOLCHAIN"));
+ env::set_var("RUSTUP_TOOLCHAIN", env!("TOOLCHAIN_NAME"));
let args: Vec<_> = match env::args().nth(1).as_deref() {
Some("jit") => {