Rollup merge of rust-lang#140882 - Dietr1ch:dev/duration_constructors_lite, r=BurntSushi

Split duration_constructors to get non-controversial constructors out

This implements rust-lang#140881

Author: fmease

core/src/time.rs

@@ -373,15 +373,15 @@ impl Duration {
     /// # Examples
     ///
     /// ```
-    /// #![feature(duration_constructors)]
+    /// #![feature(duration_constructors_lite)]
     /// use std::time::Duration;
     ///
     /// let duration = Duration::from_hours(6);
     ///
     /// assert_eq!(6 * 60 * 60, duration.as_secs());
     /// assert_eq!(0, duration.subsec_nanos());
     /// ```
-    #[unstable(feature = "duration_constructors", issue = "120301")]
+    #[unstable(feature = "duration_constructors_lite", issue = "140881")]
     #[must_use]
     #[inline]
     pub const fn from_hours(hours: u64) -> Duration {
@@ -401,15 +401,15 @@ impl Duration {
     /// # Examples
     ///
     /// ```
-    /// #![feature(duration_constructors)]
+    /// #![feature(duration_constructors_lite)]
     /// use std::time::Duration;
     ///
     /// let duration = Duration::from_mins(10);
     ///
     /// assert_eq!(10 * 60, duration.as_secs());
     /// assert_eq!(0, duration.subsec_nanos());
     /// ```
-    #[unstable(feature = "duration_constructors", issue = "120301")]
+    #[unstable(feature = "duration_constructors_lite", issue = "140881")]
     #[must_use]
     #[inline]
     pub const fn from_mins(mins: u64) -> Duration {

coretests/tests/lib.rs

@@ -24,6 +24,7 @@
 #![feature(dec2flt)]
 #![feature(duration_constants)]
 #![feature(duration_constructors)]
+#![feature(duration_constructors_lite)]
 #![feature(error_generic_member_access)]
 #![feature(exact_size_is_empty)]
 #![feature(extend_one)]

coretests/tests/time.rs

@@ -46,16 +46,25 @@ fn from_weeks_overflow() {
 }
 
 #[test]
-fn constructors() {
+fn constructor_weeks() {
     assert_eq!(Duration::from_weeks(1), Duration::from_secs(7 * 24 * 60 * 60));
     assert_eq!(Duration::from_weeks(0), Duration::ZERO);
+}
 
+#[test]
+fn constructor_days() {
     assert_eq!(Duration::from_days(1), Duration::from_secs(86_400));
     assert_eq!(Duration::from_days(0), Duration::ZERO);
+}
 
+#[test]
+fn constructor_hours() {
     assert_eq!(Duration::from_hours(1), Duration::from_secs(3_600));
     assert_eq!(Duration::from_hours(0), Duration::ZERO);
+}
 
+#[test]
+fn constructor_minutes() {
     assert_eq!(Duration::from_mins(1), Duration::from_secs(60));
     assert_eq!(Duration::from_mins(0), Duration::ZERO);
 }