Function rustc_mir::monomorphize::needs_fn_once_adapter_shim[][src]

fn needs_fn_once_adapter_shim(
    actual_closure_kind: ClosureKind,
    trait_closure_kind: ClosureKind
) -> Result<bool, ()>
🔬 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?