[][src]Function syntax::parse::parser::maybe_append

Important traits for Vec<u8>
fn maybe_append(
    lhs: Vec<Attribute>,
    rhs: Option<Vec<Attribute>>
) -> Vec<Attribute>
🔬 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?