Macro rustc::impl_stable_hash_for_spanned

macro_rules! impl_stable_hash_for_spanned {
    ($T:path) => { ... };
}

🔬 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?