20         pub enum RustTarget {
29         impl Default for RustTarget {
31             fn default() -> RustTarget {
36         impl FromStr for RustTarget {
47                         stringify!($value) => Ok(RustTarget::$release),
60         impl From<RustTarget> for String {
61             fn from(target: RustTarget) -> Self {
64                         RustTarget::$release => stringify!($value),
137 pub const LATEST_STABLE_RUST: RustTarget = RustTarget::Stable_1_40;
169         impl From<RustTarget> for RustFeatures {
170             fn from(rust_target: RustTarget) -> Self {
174                 if rust_target >= RustTarget::$rust_target {
232         let default_rust_target: RustTarget = Default::default();  in default()
244         let f_1_0 = RustFeatures::from(RustTarget::Stable_1_0);  in target_features()
253         let f_1_21 = RustFeatures::from(RustTarget::Stable_1_21);  in target_features()
262         let f_nightly = RustFeatures::from(RustTarget::Nightly);  in target_features()
274     fn test_target(target_str: &str, target: RustTarget) {  in test_target()  argument
277         assert_eq!(target, RustTarget::from_str(target_str).unwrap());  in test_target()
282         test_target("1.0", RustTarget::Stable_1_0);  in str_to_target()
283         test_target("1.19", RustTarget::Stable_1_19);  in str_to_target()
284         test_target("1.21", RustTarget::Stable_1_21);  in str_to_target()
285         test_target("1.25", RustTarget::Stable_1_25);  in str_to_target()
286         test_target("nightly", RustTarget::Nightly);  in str_to_target()