Function syntax::fold::noop_fold_crate

pub fn noop_fold_crate<T: Folder>(
    Crate { module: module, attrs: attrs, span: span }: Crate, 
    folder: &mut T
) -> Crate

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?