jobs). It's not enabled by default, but will be "in the near
future". It can be activated with the `-C codegen-units=N` flag to
`rustc`.
+* This is the first release with [experimental support for linking
+ with the MSVC linker and lib C on Windows (instead of using the GNU
+ variants via MinGW)][win]. It is yet recommended only for the most
+ intrepid Rusticians.
+* Benchmark compilations are showing a 30% improvement in
+ bootstrapping over 1.1.
Breaking Changes
----------------
* [The `#[packed]` attribute is no longer silently accepted by the
compiler][packed]. This attribute did nothing and code that
mentioned it likely did not work as intended.
+* Associated type defaults are [now behind the
+ `associated_type_defaults` feature gate][ad]. In 1.1 associated type
+ defaults *did not work*, but could be mentioned syntactically. As
+ such this breakage has minimal impact.
Language
--------
`LinkedList`, `VecDeque`, `EnumSet`, `BinaryHeap`, `VecMap`,
`BTreeSet` and `BTreeMap`. [RFC][extend-rfc].
* The [`iter::once`] function returns an iterator that yields a single
- element.
-* The [`iter::empty`] function returns an iterator that yields no
+ element, and [`iter::empty`] returns an iterator that yields no
elements.
* The [`matches`] and [`rmatches`] methods on `str` return iterators
over substring matches.
-* [`Cell`] and [`RefCell`] both implement [`Eq`].
+* [`Cell`] and [`RefCell`] both implement `Eq`.
* A number of methods for wrapping arithmetic are added to the
integral types, [`wrapping_div`], [`wrapping_rem`],
[`wrapping_neg`], [`wrapping_shl`], [`wrapping_shr`]. These are in
are used by code generators to emit implementations of [`Debug`].
* `str` has new [`to_uppercase`][strup] and [`to_lowercase`][strlow]
methods that convert case, following Unicode case mapping.
-* It is now easier to handle to poisoned locks. The [`PoisonError`]
+* It is now easier to handle poisoned locks. The [`PoisonError`]
type, returned by failing lock operations, exposes `into_inner`,
`get_ref`, and `get_mut`, which all give access to the inner lock
guard, and allow the poisoned lock to continue to operate. The
[dst]: https://github.com/rust-lang/rfcs/blob/master/text/0982-dst-coercion.md
[parcodegen]: https://github.com/rust-lang/rust/pull/26018
[packed]: https://github.com/rust-lang/rust/pull/25541
+[ad]: https://github.com/rust-lang/rust/pull/27382
+[win]: https://github.com/rust-lang/rust/pull/25350
Version 1.1.0 (June 2015)
=========================