Function syntax::feature_gate::check_attribute [−] [src]

pub fn check_attribute(
    attr: &Attribute, 
    parse_sess: &ParseSess, 
    features: &Features
)

🔬 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?

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