Function syntax::fold::noop_fold_ty_param_bound

pub fn noop_fold_ty_param_bound<T>(
    tpb: TyParamBound, 
    fld: &mut T
) -> TyParamBound where
    T: Folder, 

🔬 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?