Static rustc_lint::builtin::UNCONDITIONAL_RECURSION[]

pub static UNCONDITIONAL_RECURSION: &Lint = &::lint::Lint{name: "UNCONDITIONAL_RECURSION",
              default_level: ::lint::Warn,
              desc: "functions that cannot return without calling themselves",
              edition_lint_opts: None,}
🔬 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?