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.

20 files changed, 98 insertions, 98 deletions

diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index fc6929f896e..8a39be8fae8 100644
--- a/src/liballoc/boxed.rs
+++ b/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 {
diff --git a/src/libcollections/string.rs b/src/libcollections/string.rs
index 31ab04e9f3b..55f0e01548f 100644
--- a/src/libcollections/string.rs
+++ b/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()
diff --git a/src/libcollections/vec.rs b/src/libcollections/vec.rs
index 1cf713290d8..3ef8438bc0b 100644
--- a/src/libcollections/vec.rs
+++ b/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)
diff --git a/src/libcore/cell.rs b/src/libcore/cell.rs
index 7886f90b66e..ea480f38947 100644
--- a/src/libcore/cell.rs
+++ b/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> {
diff --git a/src/libcore/iter/mod.rs b/src/libcore/iter/mod.rs
index 420ff0f7119..f9b818f5bff 100644
--- a/src/libcore/iter/mod.rs
+++ b/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 {
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index 8b4002fe9af..be093cca6a1 100644
--- a/src/libcore/num/mod.rs
+++ b/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")] }
diff --git a/src/libcore/slice/mod.rs b/src/libcore/slice/mod.rs
index e15eb8f2444..24ebfeb62e2 100644
--- a/src/libcore/slice/mod.rs
+++ b/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()
diff --git a/src/libcore/str/mod.rs b/src/libcore/str/mod.rs
index 6b627430904..7fb941c091f 100644
--- a/src/libcore/str/mod.rs
+++ b/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 {
diff --git a/src/libstd/env.rs b/src/libstd/env.rs
index 96c10c5d10d..cba4cf25be4 100644
--- a/src/libstd/env.rs
+++ b/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() }
 }
diff --git a/src/libstd/error.rs b/src/libstd/error.rs
index 9ff7d746733..f56e3a5d780 100644
--- a/src/libstd/error.rs
+++ b/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)
diff --git a/src/libstd/ffi/c_str.rs b/src/libstd/ffi/c_str.rs
index 44b62593fa3..f40475a4142 100644
--- a/src/libstd/ffi/c_str.rs
+++ b/src/libstd/ffi/c_str.rs
@@ -419,14 +419,14 @@ impl<'a> From<&'a CStr> for Box<CStr> {
     }
 }
 
-#[stable(feature = "c_string_from_box", since = "1.17.0")]
+#[stable(feature = "c_string_from_box", since = "1.18.0")]
 impl From<Box<CStr>> for CString {
     fn from(s: Box<CStr>) -> CString {
         s.into_c_string()
     }
 }
 
-#[stable(feature = "box_from_c_string", since = "1.17.0")]
+#[stable(feature = "box_from_c_string", since = "1.18.0")]
 impl Into<Box<CStr>> for CString {
     fn into(self) -> Box<CStr> {
         self.into_boxed_c_str()
diff --git a/src/libstd/ffi/os_str.rs b/src/libstd/ffi/os_str.rs
index b90192dd8af..eaf0502a577 100644
--- a/src/libstd/ffi/os_str.rs
+++ b/src/libstd/ffi/os_str.rs
@@ -529,14 +529,14 @@ impl<'a> From<&'a OsStr> for Box<OsStr> {
     }
 }
 
-#[stable(feature = "os_string_from_box", since = "1.17.0")]
+#[stable(feature = "os_string_from_box", since = "1.18.0")]
 impl<'a> From<Box<OsStr>> for OsString {
     fn from(boxed: Box<OsStr>) -> OsString {
         boxed.into_os_string()
     }
 }
 
-#[stable(feature = "box_from_c_string", since = "1.17.0")]
+#[stable(feature = "box_from_os_string", since = "1.18.0")]
 impl Into<Box<OsStr>> for OsString {
     fn into(self) -> Box<OsStr> {
         self.into_boxed_os_str()
diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
index ef78ea6dfe8..df3fce0da76 100644
--- a/src/libstd/macros.rs
+++ b/src/libstd/macros.rs
@@ -143,7 +143,7 @@ macro_rules! println {
 ///
 /// Panics if writing to `io::stderr` fails.
 #[macro_export]
-#[stable(feature = "eprint", since="1.18.0")]
+#[stable(feature = "eprint", since = "1.19.0")]
 #[allow_internal_unstable]
 macro_rules! eprint {
     ($($arg:tt)*) => ($crate::io::_eprint(format_args!($($arg)*)));
@@ -162,7 +162,7 @@ macro_rules! eprint {
 ///
 /// Panics if writing to `io::stderr` fails.
 #[macro_export]
-#[stable(feature = "eprint", since="1.18.0")]
+#[stable(feature = "eprint", since = "1.19.0")]
 macro_rules! eprintln {
     () => (eprint!("\n"));
     ($fmt:expr) => (eprint!(concat!($fmt, "\n")));
diff --git a/src/libstd/net/ip.rs b/src/libstd/net/ip.rs
index c46fe4a58c7..1e5368896af 100644
--- a/src/libstd/net/ip.rs
+++ b/src/libstd/net/ip.rs
@@ -657,7 +657,7 @@ impl PartialEq for Ipv4Addr {
     }
 }
 
-#[stable(feature = "ip_cmp", since = "1.15.0")]
+#[stable(feature = "ip_cmp", since = "1.16.0")]
 impl PartialEq<Ipv4Addr> for IpAddr {
     fn eq(&self, other: &Ipv4Addr) -> bool {
         match *self {
@@ -667,7 +667,7 @@ impl PartialEq<Ipv4Addr> for IpAddr {
     }
 }
 
-#[stable(feature = "ip_cmp", since = "1.15.0")]
+#[stable(feature = "ip_cmp", since = "1.16.0")]
 impl PartialEq<IpAddr> for Ipv4Addr {
     fn eq(&self, other: &IpAddr) -> bool {
         match *other {
@@ -694,7 +694,7 @@ impl PartialOrd for Ipv4Addr {
     }
 }
 
-#[stable(feature = "ip_cmp", since = "1.15.0")]
+#[stable(feature = "ip_cmp", since = "1.16.0")]
 impl PartialOrd<Ipv4Addr> for IpAddr {
     fn partial_cmp(&self, other: &Ipv4Addr) -> Option<Ordering> {
         match *self {
@@ -704,7 +704,7 @@ impl PartialOrd<Ipv4Addr> for IpAddr {
     }
 }
 
-#[stable(feature = "ip_cmp", since = "1.15.0")]
+#[stable(feature = "ip_cmp", since = "1.16.0")]
 impl PartialOrd<IpAddr> for Ipv4Addr {
     fn partial_cmp(&self, other: &IpAddr) -> Option<Ordering> {
         match *other {
@@ -1200,7 +1200,7 @@ impl PartialEq for Ipv6Addr {
     }
 }
 
-#[stable(feature = "ip_cmp", since = "1.15.0")]
+#[stable(feature = "ip_cmp", since = "1.16.0")]
 impl PartialEq<IpAddr> for Ipv6Addr {
     fn eq(&self, other: &IpAddr) -> bool {
         match *other {
@@ -1210,7 +1210,7 @@ impl PartialEq<IpAddr> for Ipv6Addr {
     }
 }
 
-#[stable(feature = "ip_cmp", since = "1.15.0")]
+#[stable(feature = "ip_cmp", since = "1.16.0")]
 impl PartialEq<Ipv6Addr> for IpAddr {
     fn eq(&self, other: &Ipv6Addr) -> bool {
         match *self {
@@ -1237,7 +1237,7 @@ impl PartialOrd for Ipv6Addr {
     }
 }
 
-#[stable(feature = "ip_cmp", since = "1.15.0")]
+#[stable(feature = "ip_cmp", since = "1.16.0")]
 impl PartialOrd<Ipv6Addr> for IpAddr {
     fn partial_cmp(&self, other: &Ipv6Addr) -> Option<Ordering> {
         match *self {
@@ -1247,7 +1247,7 @@ impl PartialOrd<Ipv6Addr> for IpAddr {
     }
 }
 
-#[stable(feature = "ip_cmp", since = "1.15.0")]
+#[stable(feature = "ip_cmp", since = "1.16.0")]
 impl PartialOrd<IpAddr> for Ipv6Addr {
     fn partial_cmp(&self, other: &IpAddr) -> Option<Ordering> {
         match *other {
@@ -1302,7 +1302,7 @@ impl From<[u8; 16]> for Ipv6Addr {
     }
 }
 
-#[stable(feature = "ipv6_from_segments", since = "1.15.0")]
+#[stable(feature = "ipv6_from_segments", since = "1.16.0")]
 impl From<[u16; 8]> for Ipv6Addr {
     fn from(segments: [u16; 8]) -> Ipv6Addr {
         let [a, b, c, d, e, f, g, h] = segments;
diff --git a/src/libstd/path.rs b/src/libstd/path.rs
index f4b9a8972e3..e7d8c3007f6 100644
--- a/src/libstd/path.rs
+++ b/src/libstd/path.rs
@@ -1341,14 +1341,14 @@ impl<'a> From<&'a Path> for Box<Path> {
     }
 }
 
-#[stable(feature = "path_buf_from_box", since = "1.17.0")]
+#[stable(feature = "path_buf_from_box", since = "1.18.0")]
 impl<'a> From<Box<Path>> for PathBuf {
     fn from(boxed: Box<Path>) -> PathBuf {
         boxed.into_path_buf()
     }
 }
 
-#[stable(feature = "box_from_path_buf", since = "1.17.0")]
+#[stable(feature = "box_from_path_buf", since = "1.18.0")]
 impl Into<Box<Path>> for PathBuf {
     fn into(self) -> Box<Path> {
         self.into_boxed_path()
@@ -1424,7 +1424,7 @@ impl Borrow<Path> for PathBuf {
     }
 }
 
-#[stable(feature = "default_for_pathbuf", since = "1.16.0")]
+#[stable(feature = "default_for_pathbuf", since = "1.17.0")]
 impl Default for PathBuf {
     fn default() -> Self {
         PathBuf::new()
diff --git a/src/libstd/sync/condvar.rs b/src/libstd/sync/condvar.rs
index 7ad9d9ee37c..c120a3045e4 100644
--- a/src/libstd/sync/condvar.rs
+++ b/src/libstd/sync/condvar.rs
@@ -461,7 +461,7 @@ impl fmt::Debug for Condvar {
     }
 }
 
-#[stable(feature = "condvar_default", since = "1.9.0")]
+#[stable(feature = "condvar_default", since = "1.10.0")]
 impl Default for Condvar {
     /// Creates a `Condvar` which is ready to be waited on and notified.
     fn default() -> Condvar {
diff --git a/src/libstd/sync/mpsc/mod.rs b/src/libstd/sync/mpsc/mod.rs
index 284a5fbd9d5..69507cada2b 100644
--- a/src/libstd/sync/mpsc/mod.rs
+++ b/src/libstd/sync/mpsc/mod.rs
@@ -921,7 +921,7 @@ impl<T> Drop for Sender<T> {
     }
 }
 
-#[stable(feature = "mpsc_debug", since = "1.7.0")]
+#[stable(feature = "mpsc_debug", since = "1.8.0")]
 impl<T> fmt::Debug for Sender<T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "Sender {{ .. }}")
@@ -1051,7 +1051,7 @@ impl<T> Drop for SyncSender<T> {
     }
 }
 
-#[stable(feature = "mpsc_debug", since = "1.7.0")]
+#[stable(feature = "mpsc_debug", since = "1.8.0")]
 impl<T> fmt::Debug for SyncSender<T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "SyncSender {{ .. }}")
@@ -1517,7 +1517,7 @@ impl<T> Drop for Receiver<T> {
     }
 }
 
-#[stable(feature = "mpsc_debug", since = "1.7.0")]
+#[stable(feature = "mpsc_debug", since = "1.8.0")]
 impl<T> fmt::Debug for Receiver<T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "Receiver {{ .. }}")
@@ -1644,7 +1644,7 @@ impl error::Error for TryRecvError {
     }
 }
 
-#[stable(feature = "mpsc_recv_timeout_error", since = "1.14.0")]
+#[stable(feature = "mpsc_recv_timeout_error", since = "1.15.0")]
 impl fmt::Display for RecvTimeoutError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
@@ -1658,7 +1658,7 @@ impl fmt::Display for RecvTimeoutError {
     }
 }
 
-#[stable(feature = "mpsc_recv_timeout_error", since = "1.14.0")]
+#[stable(feature = "mpsc_recv_timeout_error", since = "1.15.0")]
 impl error::Error for RecvTimeoutError {
     fn description(&self) -> &str {
         match *self {
diff --git a/src/libstd/sync/mutex.rs b/src/libstd/sync/mutex.rs
index 5c3eaa4668d..9a242a96d46 100644
--- a/src/libstd/sync/mutex.rs
+++ b/src/libstd/sync/mutex.rs
@@ -153,7 +153,7 @@ pub struct MutexGuard<'a, T: ?Sized + 'a> {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<'a, T: ?Sized> !Send for MutexGuard<'a, T> { }
-#[stable(feature = "mutexguard", since = "1.18.0")]
+#[stable(feature = "mutexguard", since = "1.19.0")]
 unsafe impl<'a, T: ?Sized + Sync> Sync for MutexGuard<'a, T> { }
 
 impl<T> Mutex<T> {
@@ -372,7 +372,7 @@ unsafe impl<#[may_dangle] T: ?Sized> Drop for Mutex<T> {
     }
 }
 
-#[stable(feature = "mutex_default", since = "1.9.0")]
+#[stable(feature = "mutex_default", since = "1.10.0")]
 impl<T: ?Sized + Default> Default for Mutex<T> {
     /// Creates a `Mutex<T>`, with the `Default` value for T.
     fn default() -> Mutex<T> {
diff --git a/src/libstd/sync/rwlock.rs b/src/libstd/sync/rwlock.rs
index d26f2f7bb7e..95bc8d30932 100644
--- a/src/libstd/sync/rwlock.rs
+++ b/src/libstd/sync/rwlock.rs
@@ -330,7 +330,7 @@ impl<T: ?Sized + fmt::Debug> fmt::Debug for RwLock<T> {
     }
 }
 
-#[stable(feature = "rw_lock_default", since = "1.9.0")]
+#[stable(feature = "rw_lock_default", since = "1.10.0")]
 impl<T: Default> Default for RwLock<T> {
     /// Creates a new `RwLock<T>`, with the `Default` value for T.
     fn default() -> RwLock<T> {
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index 09090ab8731..bebb26afb54 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -410,7 +410,7 @@ declare_features! (
     (accepted, question_mark, "1.13.0", Some(31436)),
     // Allows `..` in tuple (struct) patterns
     (accepted, dotdot_in_tuple_patterns, "1.14.0", Some(33627)),
-    (accepted, item_like_imports, "1.14.0", Some(35120)),
+    (accepted, item_like_imports, "1.15.0", Some(35120)),
     // Allows using `Self` and associated types in struct expressions and patterns.
     (accepted, more_struct_aliases, "1.16.0", Some(37544)),
     // elide `'static` lifetimes in `static`s and `const`s