Auto merge of #51093 - Mark-Simulacrum:release-notes-beta, r=Mark-Simulacrum

[beta] Update release notes for beta from 1.26.1 release

Author: bors

RELEASES.md

@@ -1,3 +1,233 @@
+Version 1.26.1 (2018-05-29)
+==========================
+
+Tools
+-----
+
+- [RLS now works on Windows][50646]
+- [Rustfmt stopped badly formatting text in some cases][rustfmt/2695]
+
+Compatibility Notes
+--------
+
+- [`fn main() -> impl Trait` no longer works for non-Termination
+  trait][50656]
+  This reverts an accidental stabilization.
+- [`NaN > NaN` no longer returns true in const-fn contexts][50812]
+- [Prohibit using turbofish for `impl Trait` in method arguments][50950]
+
+[50646]: https://github.com/rust-lang/rust/issues/50646
+[50656]: https://github.com/rust-lang/rust/pull/50656
+[50812]: https://github.com/rust-lang/rust/pull/50812
+[50950]: https://github.com/rust-lang/rust/issues/50950
+[rustfmt/2695]: https://github.com/rust-lang-nursery/rustfmt/issues/2695
+
+Version 1.26.0 (2018-05-10)
+==========================
+
+Language
+--------
+- [Closures now implement `Copy` and/or `Clone` if all captured variables
+  implement either or both traits.][49299]
+- [The inclusive range syntax e.g. `for x in 0..=10` is now stable.][47813]
+- [Stablise `'_`. The underscore lifetime can be used anywhere where a
+  lifetime can be elided.][49458]
+- [`impl Trait` is now stable allowing you to have abstract types in returns
+   or in function parameters.][49255] e.g. `fn foo() -> impl Iterator<Item=u8>` or
+  `fn open(path: impl AsRef<Path>)`.
+- [Pattern matching will now automatically apply dereferences.][49394]
+- [128-bit integers in the form of `u128` and `i128` are now stable.][49101]
+- [`main` can now return `Result<(), E: Debug>`][49162] in addition to `()`.
+- [A lot of operations are now available in a const context.][46882] E.g. You
+  can now index into constant arrays, reference and dereference into constants,
+  and use Tuple struct constructors.
+- [Fixed entry slice patterns are now stable.][48516] e.g.
+  ```rust
+  let points = [1, 2, 3, 4];
+  match points {
+      [1, 2, 3, 4] => println!("All points were sequential."),
+      _ => println!("Not all points were sequential."),
+  }
+  ```
+
+
+Compiler
+--------
+- [LLD is now used as the default linker for `wasm32-unknown-unknown`.][48125]
+- [Fixed exponential projection complexity on nested types.][48296]
+  This can provide up to a ~12% reduction in compile times for certain crates.
+- [Added the `--remap-path-prefix` option to rustc.][48359] Allowing you
+  to remap path prefixes outputted by the compiler.
+- [Added `powerpc-unknown-netbsd` target.][48281]
+
+Libraries
+---------
+- [Implemented `From<u16> for usize` & `From<{u8, i16}> for isize`.][49305]
+- [Added hexadecimal formatting for integers with fmt::Debug][48978]
+  e.g. `assert!(format!("{:02x?}", b"Foo\0") == "[46, 6f, 6f, 00]")`
+- [Implemented `Default, Hash` for `cmp::Reverse`.][48628]
+- [Optimized `str::repeat` being 8x faster in large cases.][48657]
+- [`ascii::escape_default` is now available in libcore.][48735]
+- [Trailing commas are now supported in std and core macros.][48056]
+- [Implemented `Copy, Clone` for `cmp::Reverse`][47379]
+- [Implemented `Clone` for `char::{ToLowercase, ToUppercase}`.][48629]
+
+Stabilized APIs
+---------------
+- [`*const T::add`]
+- [`*const T::copy_to_nonoverlapping`]
+- [`*const T::copy_to`]
+- [`*const T::read_unaligned`]
+- [`*const T::read_volatile`]
+- [`*const T::read`]
+- [`*const T::sub`]
+- [`*const T::wrapping_add`]
+- [`*const T::wrapping_sub`]
+- [`*mut T::add`]
+- [`*mut T::copy_to_nonoverlapping`]
+- [`*mut T::copy_to`]
+- [`*mut T::read_unaligned`]
+- [`*mut T::read_volatile`]
+- [`*mut T::read`]
+- [`*mut T::replace`]
+- [`*mut T::sub`]
+- [`*mut T::swap`]
+- [`*mut T::wrapping_add`]
+- [`*mut T::wrapping_sub`]
+- [`*mut T::write_bytes`]
+- [`*mut T::write_unaligned`]
+- [`*mut T::write_volatile`]
+- [`*mut T::write`]
+- [`Box::leak`]
+- [`FromUtf8Error::as_bytes`]
+- [`LocalKey::try_with`]
+- [`Option::cloned`]
+- [`btree_map::Entry::and_modify`]
+- [`fs::read_to_string`]
+- [`fs::read`]
+- [`fs::write`]
+- [`hash_map::Entry::and_modify`]
+- [`iter::FusedIterator`]
+- [`ops::RangeInclusive`]
+- [`ops::RangeToInclusive`]
+- [`process::id`]
+- [`slice::rotate_left`]
+- [`slice::rotate_right`]
+- [`String::retain`]
+
+
+Cargo
+-----
+- [Cargo will now output path to custom commands when `-v` is
+  passed with `--list`][cargo/5041]
+- [The Cargo binary version is now the same as the Rust version][cargo/5083]
+- [`Cargo.lock` files are now included in published crates.][cargo/5093]
+
+Misc
+----
+- [The second edition of "The Rust Programming Language" book is now recommended
+  over the first.][48404]
+
+Compatibility Notes
+-------------------
+
+- [aliasing a `Fn` trait as `dyn` no longer works.][48481] E.g. the following
+  syntax is now invalid.
+  ```
+  use std::ops::Fn as dyn;
+  fn g(_: Box<dyn(std::fmt::Debug)>) {}
+  ```
+- [The result of dereferences are no longer promoted to `'static`.][47408]
+  e.g.
+  ```rust
+  fn main() {
+      const PAIR: &(i32, i32) = &(0, 1);
+      let _reversed_pair: &'static _ = &(PAIR.1, PAIR.0); // Doesn't work
+  }
+  ```
+- [Deprecate `AsciiExt` trait in favor of inherent methods.][49109]
+- [`".e0"` will now no longer parse as `0.0` and will instead cause
+  an error.][48235]
+- [Removed hoedown from rustdoc.][48274]
+- [Bounds on higher-kinded lifetimes a hard error.][48326]
+
+[46882]: https://github.com/rust-lang/rust/pull/46882
+[47379]: https://github.com/rust-lang/rust/pull/47379
+[47408]: https://github.com/rust-lang/rust/pull/47408
+[47813]: https://github.com/rust-lang/rust/pull/47813
+[48056]: https://github.com/rust-lang/rust/pull/48056
+[48125]: https://github.com/rust-lang/rust/pull/48125
+[48166]: https://github.com/rust-lang/rust/pull/48166
+[48235]: https://github.com/rust-lang/rust/pull/48235
+[48274]: https://github.com/rust-lang/rust/pull/48274
+[48281]: https://github.com/rust-lang/rust/pull/48281
+[48296]: https://github.com/rust-lang/rust/pull/48296
+[48326]: https://github.com/rust-lang/rust/pull/48326
+[48359]: https://github.com/rust-lang/rust/pull/48359
+[48404]: https://github.com/rust-lang/rust/pull/48404
+[48481]: https://github.com/rust-lang/rust/pull/48481
+[48516]: https://github.com/rust-lang/rust/pull/48516
+[48628]: https://github.com/rust-lang/rust/pull/48628
+[48629]: https://github.com/rust-lang/rust/pull/48629
+[48657]: https://github.com/rust-lang/rust/pull/48657
+[48735]: https://github.com/rust-lang/rust/pull/48735
+[48978]: https://github.com/rust-lang/rust/pull/48978
+[49101]: https://github.com/rust-lang/rust/pull/49101
+[49109]: https://github.com/rust-lang/rust/pull/49109
+[49121]: https://github.com/rust-lang/rust/pull/49121
+[49162]: https://github.com/rust-lang/rust/pull/49162
+[49184]: https://github.com/rust-lang/rust/pull/49184
+[49234]: https://github.com/rust-lang/rust/pull/49234
+[49255]: https://github.com/rust-lang/rust/pull/49255
+[49299]: https://github.com/rust-lang/rust/pull/49299
+[49305]: https://github.com/rust-lang/rust/pull/49305
+[49394]: https://github.com/rust-lang/rust/pull/49394
+[49458]: https://github.com/rust-lang/rust/pull/49458
+[`*const T::add`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.add
+[`*const T::copy_to_nonoverlapping`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.copy_to_nonoverlapping
+[`*const T::copy_to`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.copy_to
+[`*const T::read_unaligned`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read_unaligned
+[`*const T::read_volatile`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read_volatile
+[`*const T::read`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read
+[`*const T::sub`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.sub
+[`*const T::wrapping_add`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_add
+[`*const T::wrapping_sub`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_sub
+[`*mut T::add`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.add-1
+[`*mut T::copy_to_nonoverlapping`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.copy_to_nonoverlapping-1
+[`*mut T::copy_to`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.copy_to-1
+[`*mut T::read_unaligned`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read_unaligned-1
+[`*mut T::read_volatile`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read_volatile-1
+[`*mut T::read`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read-1
+[`*mut T::replace`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.replace
+[`*mut T::sub`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.sub-1
+[`*mut T::swap`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.swap
+[`*mut T::wrapping_add`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_add-1
+[`*mut T::wrapping_sub`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_sub-1
+[`*mut T::write_bytes`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.write_bytes
+[`*mut T::write_unaligned`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.write_unaligned
+[`*mut T::write_volatile`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.write_volatile
+[`*mut T::write`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.write
+[`Box::leak`]: https://doc.rust-lang.org/std/boxed/struct.Box.html#method.leak
+[`FromUtf8Error::as_bytes`]: https://doc.rust-lang.org/std/string/struct.FromUtf8Error.html#method.as_bytes
+[`LocalKey::try_with`]: https://doc.rust-lang.org/std/thread/struct.LocalKey.html#method.try_with
+[`Option::cloned`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.cloned
+[`btree_map::Entry::and_modify`]: https://doc.rust-lang.org/std/collections/btree_map/enum.Entry.html#method.and_modify
+[`fs::read_to_string`]: https://doc.rust-lang.org/std/fs/fn.read_to_string.html
+[`fs::read`]: https://doc.rust-lang.org/std/fs/fn.read.html
+[`fs::write`]: https://doc.rust-lang.org/std/fs/fn.write.html
+[`hash_map::Entry::and_modify`]: https://doc.rust-lang.org/std/collections/hash_map/enum.Entry.html#method.and_modify
+[`iter::FusedIterator`]: https://doc.rust-lang.org/std/iter/trait.FusedIterator.html
+[`ops::RangeInclusive`]: https://doc.rust-lang.org/std/ops/struct.RangeInclusive.html
+[`ops::RangeToInclusive`]: https://doc.rust-lang.org/std/ops/struct.RangeToInclusive.html
+[`process::id`]: https://doc.rust-lang.org/std/process/fn.id.html
+[`slice::rotate_left`]: https://doc.rust-lang.org/std/primitive.slice.html#method.rotate_left
+[`slice::rotate_right`]: https://doc.rust-lang.org/std/primitive.slice.html#method.rotate_right
+[`String::retain`]: https://doc.rust-lang.org/std/string/struct.String.html#method.retain
+[cargo/5041]: https://github.com/rust-lang/cargo/pull/5041
+[cargo/5083]: https://github.com/rust-lang/cargo/pull/5083
+[cargo/5093]: https://github.com/rust-lang/cargo/pull/5093
+
+
 Version 1.25.0 (2018-03-29)
 ==========================