Macro rustc::__impl_stable_hash_field

macro_rules! __impl_stable_hash_field {
    (DECL IGNORED) => { ... };
    (DECL $name:ident) => { ... };
    (USE IGNORED $ctx:expr, $hasher:expr) => { ... };
    (USE $name:ident, $ctx:expr, $hasher:expr) => { ... };
}

🔬 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?