Constant cargo::core::features::STABILIZED_FEATURES

source ยท
const STABILIZED_FEATURES: &str = "The new feature resolver is now available \
    by specifying `resolver = \"2\"` in Cargo.toml.\n\
    See https://doc.rust-lang.org/nightly/cargo/reference/features.html#feature-resolver-version-2 \
    for more information.";