Function syntax::fold::noop_fold_item_simple

pub fn noop_fold_item_simple<T: Folder>(
    Item { id: id, ident: ident, attrs: attrs, node: node, vis: vis, span: span, tokens: tokens }: Item, 
    folder: &mut T
) -> Item

🔬 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?