Static rustc::lint::builtin::PRIVATE_IN_PUBLIC

pub static PRIVATE_IN_PUBLIC: &Lint = &::lint::Lint{name: "PRIVATE_IN_PUBLIC",
              default_level: ::lint::Warn,
              desc:
                  "detect private items in public interfaces not caught by the old implementation",}

🔬 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?