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Update RELEASES.md for 1.5
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Brian Anderson
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RELEASES.md
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RELEASES.md
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Version 1.5.0 (2015-12-10)
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==========================
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* ~700 changes, numerous bugfixes
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Highlights
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----------
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* Stabilized APIs:
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[`BinaryHeap::from`], [`BinaryHeap::into_sorted_vec`],
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[`BinaryHeap::into_vec`], [`Condvar::wait_timeout`],
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[`FileTypeExt::is_block_device`], [`FileTypeExt::is_char_device`],
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[`FileTypeExt::is_fifo`], [`FileTypeExt::is_socket`],
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[`FileTypeExt`], [`Formatter::alternate`], [`Formatter::fill`],
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[`Formatter::precision`], [`Formatter::sign_aware_zero_pad`],
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[`Formatter::sign_minus`], [`Formatter::sign_plus`],
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[`Formatter::width`], [`Iterator::cmp`], [`Iterator::eq`],
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[`Iterator::ge`], [`Iterator::gt`], [`Iterator::le`],
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[`Iterator::lt`], [`Iterator::ne`], [`Iterator::partial_cmp`],
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[`Path::canonicalize`], [`Path::exists`], [`Path::is_dir`],
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[`Path::is_file`], [`Path::metadata`], [`Path::read_dir`],
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[`Path::read_link`], [`Path::symlink_metadata`],
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[`Utf8Error::valid_up_to`], [`Vec::resize`],
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[`VecDeque::as_mut_slices`], [`VecDeque::as_slices`],
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[`VecDeque::insert`], [`VecDeque::shrink_to_fit`],
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[`VecDeque::swap_remove_back`], [`VecDeque::swap_remove_front`],
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[`slice::split_first_mut`], [`slice::split_first`],
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[`slice::split_last_mut`], [`slice::split_last`],
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[`char::from_u32_unchecked`], [`fs::canonicalize`],
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[`str::MatchIndices`], [`str::RMatchIndices`],
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[`str::match_indices`], [`str::rmatch_indices`],
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[`str::slice_mut_unchecked`], [`string::ParseError`].
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* Rust applications hosted on crates.io can be installed locally to
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`~/.cargo/bin` with the [`cargo install`] command. Among other
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things this makes it easier to augment Cargo with new subcommands:
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when a binary named e.g. `cargo-foo` is found in `$PATH` it can be
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invoked as `cargo foo`.
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* Crates with wildcard (`*`) dependencies will [emit warnings when
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published][1.5w]. In 1.6 it will no longer be possible to publish
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crates with wildcard dependencies.
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Breaking Changes
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----------------
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* The rules determining when a particular lifetime must outlive
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a particular value (known as '[dropck]') have been [modified
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to not rely on parametricity][1.5p].
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* [Implementations of `AsRef` and `AsMut` were added to `Box`, `Rc`,
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and `Arc`][1.5a]. Because these smart pointer types implement
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`Deref`, this causes breakage in cases where the interior type
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contains methods of the same name.
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* [Correct a bug in Rc/Arc][1.5c] that caused [dropck] to be unaware
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that they could drop their content. Soundness fix.
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* All method invocations are [properly checked][1.5wf1] for
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[well-formedness][1.5wf2]. Soundness fix.
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* Traits whose supertraits contain `Self` are [not object
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safe][1.5o]. Soundness fix.
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* Target specifications support a [`no_default_libraries`][1.5nd]
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setting that controls whether `-nodefaultlibs` is passed to the
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linker, and in turn the `is_like_windows` setting no longer affects
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the `-nodefaultlibs` flag.
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* `#[derive(Show)]`, long-deprecated, [has been removed][1.5ds].
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* The `#[inline]` and `#[repr]` attributes [can only appear
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in valid locations][1.5at].
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* Native libraries linked from the local crate are [passed to
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the linker before native libraries from upstream crates][1.5nl].
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* Two rarely-used attributes, `#[no_debug]` and
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`#[omit_gdb_pretty_printer_section]` [are feature gated][1.5fg].
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* Negation of unsigned integers, which has been a warning for
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several releases, [is now behind a feature gate and will
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generate errors][1.5nu].
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* The parser accidentally accepted visibility modifiers on
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enum variants, a bug [which has been fixed][1.5ev].
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* [A bug was fixed that allowed `use` statements to import unstable
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features][1.5use].
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Language
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--------
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* When evaluating expressions at compile-time that are not
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compile-time constants (const-evaluating expressions in non-const
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contexts), incorrect code such as overlong bitshifts and arithmetic
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overflow will [generate a warning instead of an error][1.5ce],
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delaying the error until runtime. This will allow the
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const-evaluator to be expanded in the future backwards-compatibly.
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* The `improper_ctypes` lint [no longer warns about using `isize` and
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`usize` in FFI][1.5ict].
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Libraries
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---------
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* `Arc<T>` and `Rc<T>` are [covariant with respect to `T` instead of
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invariant][1.5c].
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* `Default` is [implemented for mutable slices][1.5d].
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* `FromStr` is [implemented for `SockAddrV4` and `SockAddrV6`][1.5s].
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* There are now `From` conversions [between floating point
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types][1.5f] where the conversions are lossless.
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* Thera are now `From` conversions [between integer types][1.5i] where
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the conversions are lossless.
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* [`fs::Metadata` implements `Clone`][1.5fs].
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* The `parse` method [accepts a leading "+" when parsing
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integers][1.5pi].
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* [`AsMut` is implemented for `Vec`][1.5am].
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* The `clone_from` implementations for `String` and `BinaryHeap` [have
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been optimized][1.5cf] and no longer rely on the default impl.
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* The `extern "Rust"`, `extern "C"`, `unsafe extern "Rust"` and
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`unsafe extern "C"` function types now [implement `Clone`,
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`PartialEq`, `Eq`, `PartialOrd`, `Ord`, `Hash`, `fmt::Pointer`, and
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`fmt::Debug` for up to 12 arguments][1.5fp].
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* [Dropping `Vec`s is much faster in unoptimized builds when the
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element types don't implement `Drop`][1.5dv].
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* A bug that caused in incorrect behavior when [combining `VecDeque`
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with zero-sized types][1.5vdz] was resolved.
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* [`PartialOrd` for slices is faster][1.5po].
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Miscellaneous
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-------------
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* [Crate metadata size was reduced by 20%][1.5md].
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* [Improvements to code generation reduced the size of libcore by 3.3
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MB and rustc's memory usage by 18MB][1.5m].
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* [Improvements to deref translation increased performance in
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unoptimized builds][1.5dr].
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* Various errors in trait resolution [are deduplicated to only be
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reported once][1.5te].
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* Rust has preliminary [support for rumprun kernels][1.5rr].
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* Rust has preliminary [support for NetBSD on amd64][1.5na].
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[1.5use]: https://github.com/rust-lang/rust/pull/28364
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[1.5po]: https://github.com/rust-lang/rust/pull/28436
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[1.5ev]: https://github.com/rust-lang/rust/pull/28442
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[1.5nu]: https://github.com/rust-lang/rust/pull/28468
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[1.5dr]: https://github.com/rust-lang/rust/pull/28491
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[1.5vdz]: https://github.com/rust-lang/rust/pull/28494
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[1.5md]: https://github.com/rust-lang/rust/pull/28521
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[1.5fg]: https://github.com/rust-lang/rust/pull/28522
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[1.5dv]: https://github.com/rust-lang/rust/pull/28531
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[1.5na]: https://github.com/rust-lang/rust/pull/28543
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[1.5fp]: https://github.com/rust-lang/rust/pull/28560
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[1.5rr]: https://github.com/rust-lang/rust/pull/28593
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[1.5cf]: https://github.com/rust-lang/rust/pull/28602
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[1.5nl]: https://github.com/rust-lang/rust/pull/28605
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[1.5te]: https://github.com/rust-lang/rust/pull/28645
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[1.5at]: https://github.com/rust-lang/rust/pull/28650
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[1.5am]: https://github.com/rust-lang/rust/pull/28663
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[1.5m]: https://github.com/rust-lang/rust/pull/28778
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[1.5ict]: https://github.com/rust-lang/rust/pull/28779
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[1.5a]: https://github.com/rust-lang/rust/pull/28811
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[1.5pi]: https://github.com/rust-lang/rust/pull/28826
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[1.5ce]: https://github.com/rust-lang/rfcs/blob/master/text/1229-compile-time-asserts.md
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[1.5p]: https://github.com/rust-lang/rfcs/blob/master/text/1238-nonparametric-dropck.md
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[1.5i]: https://github.com/rust-lang/rust/pull/28921
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[1.5fs]: https://github.com/rust-lang/rust/pull/29021
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[1.5f]: https://github.com/rust-lang/rust/pull/29129
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[1.5ds]: https://github.com/rust-lang/rust/pull/29148
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[1.5s]: https://github.com/rust-lang/rust/pull/29190
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[1.5d]: https://github.com/rust-lang/rust/pull/29245
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[1.5o]: https://github.com/rust-lang/rust/pull/29259
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[1.5nd]: https://github.com/rust-lang/rust/pull/28578
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[1.5wf2]: https://github.com/rust-lang/rfcs/blob/master/text/1214-projections-lifetimes-and-wf.md
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[1.5wf1]: https://github.com/rust-lang/rust/pull/28669
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[dropck]: https://doc.rust-lang.org/nightly/nomicon/dropck.html
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[1.5c]: https://github.com/rust-lang/rust/pull/29110
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[1.5w]: https://github.com/rust-lang/rfcs/blob/master/text/1241-no-wildcard-deps.md
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[`cargo install`]: https://github.com/rust-lang/rfcs/blob/master/text/1200-cargo-install.md
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[`BinaryHeap::from`]: http://doc.rust-lang.org/nightly/std/convert/trait.From.html#method.from
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[`BinaryHeap::into_sorted_vec`]: http://doc.rust-lang.org/nightly/std/collections/struct.BinaryHeap.html#method.into_sorted_vec
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[`BinaryHeap::into_vec`]: http://doc.rust-lang.org/nightly/std/collections/struct.BinaryHeap.html#method.into_vec
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[`Condvar::wait_timeout`]: http://doc.rust-lang.org/nightly/std/sync/struct.Condvar.html#method.wait_timeout
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[`FileTypeExt::is_block_device`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/trait.FileTypeExt.html#tymethod.is_block_device
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[`FileTypeExt::is_char_device`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/trait.FileTypeExt.html#tymethod.is_char_device
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[`FileTypeExt::is_fifo`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/trait.FileTypeExt.html#tymethod.is_fifo
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[`FileTypeExt::is_socket`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/trait.FileTypeExt.html#tymethod.is_socket
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[`FileTypeExt`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/trait.FileTypeExt.html
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[`Formatter::alternate`]: http://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html#method.alternate
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[`Formatter::fill`]: http://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html#method.fill
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[`Formatter::precision`]: http://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html#method.precision
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[`Formatter::sign_aware_zero_pad`]: http://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html#method.sign_aware_zero_pad
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[`Formatter::sign_minus`]: http://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html#method.sign_minus
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[`Formatter::sign_plus`]: http://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html#method.sign_plus
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[`Formatter::width`]: http://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html#method.width
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[`Iterator::cmp`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.cmp
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[`Iterator::eq`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.eq
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[`Iterator::ge`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.ge
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[`Iterator::gt`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.gt
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[`Iterator::le`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.le
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[`Iterator::lt`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.lt
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[`Iterator::ne`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.ne
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[`Iterator::partial_cmp`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.partial_cmp
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[`Path::canonicalize`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.canonicalize
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[`Path::exists`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.exists
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[`Path::is_dir`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.is_dir
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[`Path::is_file`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.is_file
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[`Path::metadata`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.metadata
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[`Path::read_dir`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.read_dir
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[`Path::read_link`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.read_link
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[`Path::symlink_metadata`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.symlink_metadata
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[`Utf8Error::valid_up_to`]: http://doc.rust-lang.org/nightly/core/str/struct.Utf8Error.html#method.valid_up_to
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[`Vec::resize`]: http://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.resize
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[`VecDeque::as_mut_slices`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.as_mut_slices
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[`VecDeque::as_slices`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.as_slices
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[`VecDeque::insert`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.insert
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[`VecDeque::shrink_to_fit`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.shrink_to_fit
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[`VecDeque::swap_remove_back`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.swap_remove_back
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[`VecDeque::swap_remove_front`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.swap_remove_front
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[`slice::split_first_mut`]: http://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_first_mut
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[`slice::split_first`]: http://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_first
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[`slice::split_last_mut`]: http://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_last_mut
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[`slice::split_last`]: http://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_last
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[`char::from_u32_unchecked`]: http://doc.rust-lang.org/nightly/std/char/fn.from_u32_unchecked.html
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[`fs::canonicalize`]: http://doc.rust-lang.org/nightly/std/fs/fn.canonicalize.html
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[`str::MatchIndices`]: http://doc.rust-lang.org/nightly/std/str/struct.MatchIndices.html
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[`str::RMatchIndices`]: http://doc.rust-lang.org/nightly/std/str/struct.RMatchIndices.html
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[`str::match_indices`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.match_indices
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[`str::rmatch_indices`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.rmatch_indices
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[`str::slice_mut_unchecked`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.slice_mut_unchecked
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[`string::ParseError`]: http://doc.rust-lang.org/nightly/std/string/enum.ParseError.html
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Version 1.4.0 (2015-10-29)
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============================
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==========================
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* ~1200 changes, numerous bugfixes
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