Function syntax::print::pprust::fun_to_string

pub fn fun_to_string(
    decl: &FnDecl, 
    unsafety: Unsafety, 
    constness: Constness, 
    name: Ident, 
    generics: &Generics
) -> String

🔬 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?