Auto merge of #42111 - ollie27:stab, r=Mark-Simulacrum

Correct some stability versions

These were found by running tidy on stable versions of rust and finding
features stabilised with the wrong version numbers.

Author: bors

src/liballoc/boxed.rs

@@ -445,7 +445,7 @@ impl<'a> From<&'a str> for Box<str> {
     }
 }
 
-#[stable(feature = "boxed_str_conv", since = "1.18.0")]
+#[stable(feature = "boxed_str_conv", since = "1.19.0")]
 impl From<Box<str>> for Box<[u8]> {
     fn from(s: Box<str>) -> Self {
         unsafe {

src/libcollections/string.rs

@@ -1869,28 +1869,28 @@ impl ops::Index<ops::RangeToInclusive<usize>> for String {
     }
 }
 
-#[stable(feature = "derefmut_for_string", since = "1.2.0")]
+#[stable(feature = "derefmut_for_string", since = "1.3.0")]
 impl ops::IndexMut<ops::Range<usize>> for String {
     #[inline]
     fn index_mut(&mut self, index: ops::Range<usize>) -> &mut str {
         &mut self[..][index]
     }
 }
-#[stable(feature = "derefmut_for_string", since = "1.2.0")]
+#[stable(feature = "derefmut_for_string", since = "1.3.0")]
 impl ops::IndexMut<ops::RangeTo<usize>> for String {
     #[inline]
     fn index_mut(&mut self, index: ops::RangeTo<usize>) -> &mut str {
         &mut self[..][index]
     }
 }
-#[stable(feature = "derefmut_for_string", since = "1.2.0")]
+#[stable(feature = "derefmut_for_string", since = "1.3.0")]
 impl ops::IndexMut<ops::RangeFrom<usize>> for String {
     #[inline]
     fn index_mut(&mut self, index: ops::RangeFrom<usize>) -> &mut str {
         &mut self[..][index]
     }
 }
-#[stable(feature = "derefmut_for_string", since = "1.2.0")]
+#[stable(feature = "derefmut_for_string", since = "1.3.0")]
 impl ops::IndexMut<ops::RangeFull> for String {
     #[inline]
     fn index_mut(&mut self, _index: ops::RangeFull) -> &mut str {
@@ -1922,7 +1922,7 @@ impl ops::Deref for String {
     }
 }
 
-#[stable(feature = "derefmut_for_string", since = "1.2.0")]
+#[stable(feature = "derefmut_for_string", since = "1.3.0")]
 impl ops::DerefMut for String {
     #[inline]
     fn deref_mut(&mut self) -> &mut str {
@@ -2080,14 +2080,14 @@ impl<'a> From<&'a str> for String {
 
 // note: test pulls in libstd, which causes errors here
 #[cfg(not(test))]
-#[stable(feature = "string_from_box", since = "1.17.0")]
+#[stable(feature = "string_from_box", since = "1.18.0")]
 impl From<Box<str>> for String {
     fn from(s: Box<str>) -> String {
         s.into_string()
     }
 }
 
-#[stable(feature = "box_from_str", since = "1.17.0")]
+#[stable(feature = "box_from_str", since = "1.18.0")]
 impl Into<Box<str>> for String {
     fn into(self) -> Box<str> {
         self.into_boxed_str()

src/libcollections/vec.rs

@@ -2096,7 +2096,7 @@ impl<'a, T: Clone> From<&'a [T]> for Vec<T> {
     }
 }
 
-#[stable(feature = "vec_from_mut", since = "1.21.0")]
+#[stable(feature = "vec_from_mut", since = "1.19.0")]
 impl<'a, T: Clone> From<&'a mut [T]> for Vec<T> {
     #[cfg(not(test))]
     fn from(s: &'a mut [T]) -> Vec<T> {
@@ -2117,14 +2117,14 @@ impl<'a, T> From<Cow<'a, [T]>> for Vec<T> where [T]: ToOwned<Owned=Vec<T>> {
 
 // note: test pulls in libstd, which causes errors here
 #[cfg(not(test))]
-#[stable(feature = "vec_from_box", since = "1.17.0")]
+#[stable(feature = "vec_from_box", since = "1.18.0")]
 impl<T> From<Box<[T]>> for Vec<T> {
     fn from(s: Box<[T]>) -> Vec<T> {
         s.into_vec()
     }
 }
 
-#[stable(feature = "box_from_vec", since = "1.17.0")]
+#[stable(feature = "box_from_vec", since = "1.18.0")]
 impl<T> Into<Box<[T]>> for Vec<T> {
     fn into(self) -> Box<[T]> {
         self.into_boxed_slice()
@@ -2142,14 +2142,14 @@ impl<'a> From<&'a str> for Vec<u8> {
 // Clone-on-write
 ////////////////////////////////////////////////////////////////////////////////
 
-#[stable(feature = "cow_from_vec", since = "1.7.0")]
+#[stable(feature = "cow_from_vec", since = "1.8.0")]
 impl<'a, T: Clone> From<&'a [T]> for Cow<'a, [T]> {
     fn from(s: &'a [T]) -> Cow<'a, [T]> {
         Cow::Borrowed(s)
     }
 }
 
-#[stable(feature = "cow_from_vec", since = "1.7.0")]
+#[stable(feature = "cow_from_vec", since = "1.8.0")]
 impl<'a, T: Clone> From<Vec<T>> for Cow<'a, [T]> {
     fn from(v: Vec<T>) -> Cow<'a, [T]> {
         Cow::Owned(v)

src/libcore/cell.rs

@@ -1145,7 +1145,7 @@ impl<T: ?Sized> UnsafeCell<T> {
     }
 }
 
-#[stable(feature = "unsafe_cell_default", since = "1.9.0")]
+#[stable(feature = "unsafe_cell_default", since = "1.10.0")]
 impl<T: Default> Default for UnsafeCell<T> {
     /// Creates an `UnsafeCell`, with the `Default` value for T.
     fn default() -> UnsafeCell<T> {

src/libcore/iter/mod.rs

@@ -1690,7 +1690,7 @@ impl<I> Iterator for Skip<I> where I: Iterator {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<I> ExactSizeIterator for Skip<I> where I: ExactSizeIterator {}
 
-#[stable(feature = "double_ended_skip_iterator", since = "1.8.0")]
+#[stable(feature = "double_ended_skip_iterator", since = "1.9.0")]
 impl<I> DoubleEndedIterator for Skip<I> where I: DoubleEndedIterator + ExactSizeIterator {
     fn next_back(&mut self) -> Option<Self::Item> {
         if self.len() > 0 {

src/libcore/num/mod.rs

@@ -2682,8 +2682,8 @@ pub use num::dec2flt::ParseFloatError;
 // Conversions T -> T are covered by a blanket impl and therefore excluded
 // Some conversions from and to usize/isize are not implemented due to portability concerns
 macro_rules! impl_from {
-    ($Small: ty, $Large: ty) => {
-        #[stable(feature = "lossless_prim_conv", since = "1.5.0")]
+    ($Small: ty, $Large: ty, #[$attr:meta]) => {
+        #[$attr]
         impl From<$Small> for $Large {
             #[inline]
             fn from(small: $Small) -> $Large {
@@ -2694,60 +2694,60 @@ macro_rules! impl_from {
 }
 
 // Unsigned -> Unsigned
-impl_from! { u8, u16 }
-impl_from! { u8, u32 }
-impl_from! { u8, u64 }
-impl_from! { u8, u128 }
-impl_from! { u8, usize }
-impl_from! { u16, u32 }
-impl_from! { u16, u64 }
-impl_from! { u16, u128 }
-impl_from! { u32, u64 }
-impl_from! { u32, u128 }
-impl_from! { u64, u128 }
+impl_from! { u8, u16, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u8, u32, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u8, u64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u8, u128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { u8, usize, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u16, u32, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u16, u64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u16, u128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { u32, u64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u32, u128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { u64, u128, #[unstable(feature = "i128", issue = "35118")] }
 
 // Signed -> Signed
-impl_from! { i8, i16 }
-impl_from! { i8, i32 }
-impl_from! { i8, i64 }
-impl_from! { i8, i128 }
-impl_from! { i8, isize }
-impl_from! { i16, i32 }
-impl_from! { i16, i64 }
-impl_from! { i16, i128 }
-impl_from! { i32, i64 }
-impl_from! { i32, i128 }
-impl_from! { i64, i128 }
+impl_from! { i8, i16, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { i8, i32, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { i8, i64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { i8, i128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { i8, isize, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { i16, i32, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { i16, i64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { i16, i128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { i32, i64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { i32, i128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { i64, i128, #[unstable(feature = "i128", issue = "35118")] }
 
 // Unsigned -> Signed
-impl_from! { u8, i16 }
-impl_from! { u8, i32 }
-impl_from! { u8, i64 }
-impl_from! { u8, i128 }
-impl_from! { u16, i32 }
-impl_from! { u16, i64 }
-impl_from! { u16, i128 }
-impl_from! { u32, i64 }
-impl_from! { u32, i128 }
-impl_from! { u64, i128 }
+impl_from! { u8, i16, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u8, i32, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u8, i64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u8, i128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { u16, i32, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u16, i64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u16, i128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { u32, i64, #[stable(feature = "lossless_int_conv", since = "1.5.0")] }
+impl_from! { u32, i128, #[unstable(feature = "i128", issue = "35118")] }
+impl_from! { u64, i128, #[unstable(feature = "i128", issue = "35118")] }
 
 // Note: integers can only be represented with full precision in a float if
 // they fit in the significand, which is 24 bits in f32 and 53 bits in f64.
 // Lossy float conversions are not implemented at this time.
 
 // Signed -> Float
-impl_from! { i8, f32 }
-impl_from! { i8, f64 }
-impl_from! { i16, f32 }
-impl_from! { i16, f64 }
-impl_from! { i32, f64 }
+impl_from! { i8, f32, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
+impl_from! { i8, f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
+impl_from! { i16, f32, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
+impl_from! { i16, f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
+impl_from! { i32, f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
 
 // Unsigned -> Float
-impl_from! { u8, f32 }
-impl_from! { u8, f64 }
-impl_from! { u16, f32 }
-impl_from! { u16, f64 }
-impl_from! { u32, f64 }
+impl_from! { u8, f32, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
+impl_from! { u8, f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
+impl_from! { u16, f32, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
+impl_from! { u16, f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
+impl_from! { u32, f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }
 
 // Float -> Float
-impl_from! { f32, f64 }
+impl_from! { f32, f64, #[stable(feature = "lossless_float_conv", since = "1.6.0")] }

src/libcore/slice/mod.rs

@@ -1450,7 +1450,7 @@ impl<'a, T> Clone for Iter<'a, T> {
     fn clone(&self) -> Iter<'a, T> { Iter { ptr: self.ptr, end: self.end, _marker: self._marker } }
 }
 
-#[stable(feature = "slice_iter_as_ref", since = "1.12.0")]
+#[stable(feature = "slice_iter_as_ref", since = "1.13.0")]
 impl<'a, T> AsRef<[T]> for Iter<'a, T> {
     fn as_ref(&self) -> &[T] {
         self.as_slice()

src/libcore/str/mod.rs

@@ -1597,7 +1597,7 @@ mod traits {
     /// byte offset of a character (as defined by `is_char_boundary`).
     /// Requires that `begin <= end` and `end <= len` where `len` is the
     /// length of the string.
-    #[stable(feature = "derefmut_for_string", since = "1.2.0")]
+    #[stable(feature = "derefmut_for_string", since = "1.3.0")]
     impl ops::IndexMut<ops::Range<usize>> for str {
         #[inline]
         fn index_mut(&mut self, index: ops::Range<usize>) -> &mut str {
@@ -1632,7 +1632,7 @@ mod traits {
     /// `end`.
     ///
     /// Equivalent to `&mut self[0 .. end]`.
-    #[stable(feature = "derefmut_for_string", since = "1.2.0")]
+    #[stable(feature = "derefmut_for_string", since = "1.3.0")]
     impl ops::IndexMut<ops::RangeTo<usize>> for str {
         #[inline]
         fn index_mut(&mut self, index: ops::RangeTo<usize>) -> &mut str {
@@ -1672,7 +1672,7 @@ mod traits {
     /// to the end of the string.
     ///
     /// Equivalent to `&mut self[begin .. len]`.
-    #[stable(feature = "derefmut_for_string", since = "1.2.0")]
+    #[stable(feature = "derefmut_for_string", since = "1.3.0")]
     impl ops::IndexMut<ops::RangeFrom<usize>> for str {
         #[inline]
         fn index_mut(&mut self, index: ops::RangeFrom<usize>) -> &mut str {
@@ -1708,7 +1708,7 @@ mod traits {
     /// never panic.
     ///
     /// Equivalent to `&mut self[0 .. len]`.
-    #[stable(feature = "derefmut_for_string", since = "1.2.0")]
+    #[stable(feature = "derefmut_for_string", since = "1.3.0")]
     impl ops::IndexMut<ops::RangeFull> for str {
         #[inline]
         fn index_mut(&mut self, _index: ops::RangeFull) -> &mut str {

src/libstd/env.rs

@@ -683,7 +683,7 @@ impl ExactSizeIterator for Args {
     fn is_empty(&self) -> bool { self.inner.is_empty() }
 }
 
-#[stable(feature = "env_iterators", since = "1.11.0")]
+#[stable(feature = "env_iterators", since = "1.12.0")]
 impl DoubleEndedIterator for Args {
     fn next_back(&mut self) -> Option<String> {
         self.inner.next_back().map(|s| s.into_string().unwrap())
@@ -710,7 +710,7 @@ impl ExactSizeIterator for ArgsOs {
     fn is_empty(&self) -> bool { self.inner.is_empty() }
 }
 
-#[stable(feature = "env_iterators", since = "1.11.0")]
+#[stable(feature = "env_iterators", since = "1.12.0")]
 impl DoubleEndedIterator for ArgsOs {
     fn next_back(&mut self) -> Option<OsString> { self.inner.next_back() }
 }

src/libstd/error.rs

@@ -193,7 +193,7 @@ impl From<String> for Box<Error + Send + Sync> {
     }
 }
 
-#[stable(feature = "string_box_error", since = "1.7.0")]
+#[stable(feature = "string_box_error", since = "1.6.0")]
 impl From<String> for Box<Error> {
     fn from(str_err: String) -> Box<Error> {
         let err1: Box<Error + Send + Sync> = From::from(str_err);
@@ -209,7 +209,7 @@ impl<'a, 'b> From<&'b str> for Box<Error + Send + Sync + 'a> {
     }
 }
 
-#[stable(feature = "string_box_error", since = "1.7.0")]
+#[stable(feature = "string_box_error", since = "1.6.0")]
 impl<'a> From<&'a str> for Box<Error> {
     fn from(err: &'a str) -> Box<Error> {
         From::from(String::from(err))
@@ -282,7 +282,7 @@ impl Error for char::DecodeUtf16Error {
     }
 }
 
-#[stable(feature = "box_error", since = "1.7.0")]
+#[stable(feature = "box_error", since = "1.8.0")]
 impl<T: Error> Error for Box<T> {
     fn description(&self) -> &str {
         Error::description(&**self)