Macro rustc::impl_stable_hash_for

macro_rules! impl_stable_hash_for {
    (enum $enum_name:path { $( $variant:ident $( ( $($arg:ident),* ) )* ),* }) => { ... };
    (struct $struct_name:path { $($field:ident),* }) => { ... };
    (tuple_struct $struct_name:path { $($field:ident),* }) => { ... };
}

🔬 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?