Existential Type rustc::traits::specialize::specialization_graph::[][src]

existential type <'a>: : Iterator<Item = AssociatedItem> + 'a;
🔬 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?