[][src]Function syntax_ext::proc_macro_registrar::is_proc_macro_attr

fn is_proc_macro_attr(attr: &Attribute) -> 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?