Function syntax_ext::format_foreign::printf::at_next_cp_while[][src]

fn at_next_cp_while<F>(cur: Cur, pred: F) -> Cur where
    F: FnMut(char) -> 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?