#![forbid(unexpected_cfgs)]
#[rustversion::nightly]
fn nightly() {
println!("cargo:rustc-cfg=nightly");
}
#[rustversion::not(nightly)]
fn nightly() {}
fn main() {
println!("cargo:rustc-check-cfg=cfg(nightly)");
println!("cargo:rerun-if-changed=build.rs");
nightly();
}