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‎RELEASES.md

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Version 1.7.0 (2016-03-03)
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==========================
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Language
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--------
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* Soundness fixes to the interactions between associated types and
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lifetimes, specified in [RFC 1214], [now generate errors][1.7sf] for
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code that violates the new rules. This is a significant change that
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is known to break existing code, so it has emitted warnings for the
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new error cases since 1.4 to give crate authors time to adapt. The
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details of what is changing are subtle; read the RFC for more.
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Libraries
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---------
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* Stabilized APIs:
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[`Path::strip_prefix`][] (renamed from relative_from),
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[`path::StripPrefixError`][] (new error type returned from strip_prefix),
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[`Ipv4Addr::is_loopback`],
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[`Ipv4Addr::is_private`],
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[`Ipv4Addr::is_link_local`],
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[`Ipv4Addr::is_multicast`],
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[`Ipv4Addr::is_broadcast`],
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[`Ipv4Addr::is_documentation`],
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[`Ipv6Addr::is_unspecified`],
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[`Ipv6Addr::is_loopback`],
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[`Ipv6Addr::is_multicast`],
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[`Vec::as_slice`],
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[`Vec::as_mut_slice`],
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[`String::as_str`],
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[`String::as_mut_str`],
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`<[T]>::`[`clone_from_slice`], which now requires the two slices to
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be the same length
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`<[T]>::`[`sort_by_key`],
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[`i32::checked_rem`],
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[`i32::checked_neg`],
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[`i32::checked_shl`],
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[`i32::checked_shr`],
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[`i32::saturating_mul`],
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[`i32::overflowing_add`],
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[`i32::overflowing_sub`],
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[`i32::overflowing_mul`],
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[`i32::overflowing_div`],
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[`i32::overflowing_rem`],
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[`i32::overflowing_neg`],
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[`i32::overflowing_shl`],
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[`i32::overflowing_shr`],
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[`u32::checked_rem`],
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[`u32::checked_neg`],
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[`u32::checked_shl`],
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[`u32::checked_shl`],
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[`u32::saturating_mul`],
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[`u32::overflowing_add`],
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[`u32::overflowing_sub`],
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[`u32::overflowing_mul`],
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[`u32::overflowing_div`],
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[`u32::overflowing_rem`],
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[`u32::overflowing_neg`],
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[`u32::overflowing_shl`],
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[`u32::overflowing_shr`],
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checked, saturated, and overflowing operations for other primitive types,
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[`ffi::IntoStringError`],
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[`CString::into_string`],
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[`CString::into_bytes`],
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[`CString::into_bytes_with_nul`],
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`From<CString> for Vec<u8>`,
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[`IntoStringError::into_cstring`],
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[`IntoStringError::utf8_error`],
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`Error for IntoStringError`.
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* [Validating UTF-8 is faster by a factor of between 7 and 14x for
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ASCII input][1.7utf8]. This means that creating `String`s and `str`s
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from bytes is faster.
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* [The performance of `LineWriter` (and thus `io::stdout`) was
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improved by using `memchr` to search for newlines][1.7m].
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* [`f32::to_degrees` and `f32::to_radians` are stable][1.7f]. The
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`f64` variants were stabilized previously.
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* [`BTreeMap` was rewritten to use less memory improve performance of
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insertion and iteration, the latter by as much as 5x`][1.7bm].
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* [`BTreeSet` and its iterators, `Iter`, `IntoIter`, and `Range` are
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covariant over their contained type][1.7bt].
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* [`LinkedList` and its iterators, `Iter` and `IntoIter` are covariant
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over their contained type][1.7ll].
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* [`str::replace` now accepts a `Pattern`][1.7rp], like other string
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searching methods.
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* [`Any` is implemented for unsized types][1.7a].
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* [`Hash` is implemented for `Duration`][1.7h].
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Misc
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----
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* [The `--error-format=json` flag to `rustc` causes it to emit errors
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in JSON format][1.7j]. This is an unstable flag and so also requires
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the `-Z unstable-options` flag.
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* [When running tests with `--test`, rustdoc will pass `--cfg`
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arguments to the compiler][1.7dt].
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* [The compiler is built with RPATH information by default][1.7rpa].
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This means that it will be possible to run `rustc` when installed in
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unusual configurations without configuring the dynamic linker search
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path explicitly.
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* [`rustc` passes `--enable-new-dtags` to GNU ld][1.7dta]. This makes
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any RPATH entries (emitted with `-C rpath`) *not* take precedence
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over `LD_LIBRARY_PATH`.
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Cargo
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-----
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* [`cargo rustc` accepts a `--profile` flag that runs `rustc` under
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any of the compilation profiles, 'dev', 'bench', or 'test'][1.7cp].
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* [The `rerun-if-changed` build script directive no longer causes the
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build script to incorrectly run twice in certain scenarios][1.7rr].
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Compatibility Notes
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-------------------
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* [Several bugs in the compiler's visibility calculations were
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fixed][1.7v]. Since this was found to break significant amounts of
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code, the new errors will be emitted as warnings for several release
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cycles, under the `private_in_public` lint.
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* Defaulted type parameters were accidentally accepted in positions
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that were not intended. In this release, [defaulted type parameters
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appearing outside of type definitions will generate a
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warning][1.7d], which will become an error in future releases.
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* [Parsing "." as a float results in an error instead of
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0][1.7p]. That is, `".".parse::<f32>()` returns `Err`, not `Ok(0)`.
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* [Borrows of closure parameters may not outlive the closure][1.7bc].
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[1.7a]: https://github.com/rust-lang/rust/pull/30928
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[1.7bc]: https://github.com/rust-lang/rust/pull/30341
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[1.7bm]: https://github.com/rust-lang/rust/pull/30426
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[1.7bt]: https://github.com/rust-lang/rust/pull/30998
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[1.7cp]: https://github.com/rust-lang/cargo/pull/2224
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[1.7d]: https://github.com/rust-lang/rust/pull/30724
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[1.7dt]: https://github.com/rust-lang/rust/pull/30372
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[1.7dta]: https://github.com/rust-lang/rust/pull/30394
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[1.7f]: https://github.com/rust-lang/rust/pull/30672
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[1.7h]: https://github.com/rust-lang/rust/pull/30818
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[1.7j]: https://github.com/rust-lang/rust/pull/30711
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[1.7ll]: https://github.com/rust-lang/rust/pull/30663
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[1.7m]: https://github.com/rust-lang/rust/pull/30381
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[1.7p]: https://github.com/rust-lang/rust/pull/30681
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[1.7rp]: https://github.com/rust-lang/rust/pull/29498
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[1.7rpa]: https://github.com/rust-lang/rust/pull/30353
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[1.7rr]: https://github.com/rust-lang/cargo/pull/2279
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[1.7sf]: https://github.com/rust-lang/rust/pull/30389
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[1.7utf8]: https://github.com/rust-lang/rust/pull/30740
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[1.7v]: https://github.com/rust-lang/rust/pull/29973
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[RFC 1214]: https://github.com/rust-lang/rfcs/blob/master/text/1214-projections-lifetimes-and-wf.md
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[`clone_from_slice`]: http://doc.rust-lang.org/nightly/std/primitive.slice.html#method.clone_from_slice
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[`sort_by_key`]: http://doc.rust-lang.org/nightly/std/primitive.slice.html#method.sort_by_key
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[`CString::into_bytes_with_nul`]: http://doc.rust-lang.org/nightly/std/ffi/struct.CString.html#method.into_bytes_with_nul
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[`CString::into_bytes`]: http://doc.rust-lang.org/nightly/std/ffi/struct.CString.html#method.into_bytes
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[`CString::into_string`]: http://doc.rust-lang.org/nightly/std/ffi/struct.CString.html#method.into_string
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[`IntoStringError::into_cstring`]: http://doc.rust-lang.org/nightly/std/ffi/struct.IntoStringError.html#method.into_cstring
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[`IntoStringError::utf8_error`]: http://doc.rust-lang.org/nightly/std/ffi/struct.IntoStringError.html#method.utf8_error
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[`Ipv4Addr::is_broadcast`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#method.is_broadcast
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[`Ipv4Addr::is_documentation`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#method.is_documentation
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[`Ipv4Addr::is_link_local`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#method.is_link_local
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[`Ipv4Addr::is_loopback`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#method.is_loopback
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[`Ipv4Addr::is_multicast`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#method.is_multicast
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[`Ipv4Addr::is_private`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#method.is_private
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[`Ipv6Addr::is_loopback`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv6Addr.html#method.is_loopback
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[`Ipv6Addr::is_multicast`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv6Addr.html#method.is_multicast
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[`Ipv6Addr::is_unspecified`]: http://doc.rust-lang.org/nightly/std/net/struct.Ipv6Addr.html#method.is_unspecified
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[`Path::strip_prefix`]: http://doc.rust-lang.org/nightly/std/path/struct.Path.html#method.strip_prefix
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[`String::as_mut_str`]: http://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_mut_str
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[`String::as_str`]: http://doc.rust-lang.org/nightly/std/string/struct.String.html#method.as_str
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[`Vec::as_mut_slice`]: http://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_mut_slice
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[`Vec::as_slice`]: http://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.as_slice
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[`ffi::IntoStringError`]: http://doc.rust-lang.org/nightly/std/ffi/struct.IntoStringError.html
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[`i32::checked_neg`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.checked_neg
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[`i32::checked_rem`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.checked_rem
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[`i32::checked_shl`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.checked_shl
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[`i32::checked_shr`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.checked_shr
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[`i32::overflowing_add`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.overflowing_add
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[`i32::overflowing_div`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.overflowing_div
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[`i32::overflowing_mul`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.overflowing_mul
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[`i32::overflowing_neg`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.overflowing_neg
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[`i32::overflowing_rem`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.overflowing_rem
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[`i32::overflowing_shl`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.overflowing_shl
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[`i32::overflowing_shr`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.overflowing_shr
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[`i32::overflowing_sub`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.overflowing_sub
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[`i32::saturating_mul`]: http://doc.rust-lang.org/nightly/std/primitive.i32.html#method.saturating_mul
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[`path::StripPrefixError`]: http://doc.rust-lang.org/nightly/std/path/struct.StripPrefixError.html
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[`u32::checked_rem`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.checked_rem
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[`u32::checked_shl`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.checked_shl
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[`u32::overflowing_add`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.overflowing_add
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[`u32::overflowing_div`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.overflowing_div
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[`u32::overflowing_mul`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.overflowing_mul
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[`u32::overflowing_neg`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.overflowing_neg
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[`u32::overflowing_rem`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.overflowing_rem
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[`u32::overflowing_shl`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.overflowing_shl
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[`u32::overflowing_shr`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.overflowing_shr
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[`u32::overflowing_sub`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.overflowing_sub
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[`u32::saturating_mul`]: http://doc.rust-lang.org/nightly/std/primitive.u32.html#method.saturating_mul
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Version 1.6.0 (2016-01-21)
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==========================
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Language
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--------
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* The `#![no_std]` attribute causes a crate to not be linked to the
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standard library, but only the [core library][1.6co], as described
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in [RFC 1184]. The core library defines common types and traits but
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has no platform dependencies whatsoever, and is the basis for Rust
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software in environments that cannot support a full port of the
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standard library, such as operating systems. Most of the core
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library is now stable.
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Libraries
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---------
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* Stabilized APIs:
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[`Read::read_exact`],
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[`ErrorKind::UnexpectedEof`][] (renamed from `UnexpectedEOF`),
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[`fs::DirBuilder`], [`fs::DirBuilder::new`],
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[`fs::DirBuilder::recursive`], [`fs::DirBuilder::create`],
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[`os::unix::fs::DirBuilderExt`],
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[`os::unix::fs::DirBuilderExt::mode`], [`vec::Drain`],
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[`vec::Vec::drain`], [`string::Drain`], [`string::String::drain`],
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[`vec_deque::Drain`], [`vec_deque::VecDeque::drain`],
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[`collections::hash_map::Drain`],
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[`collections::hash_map::HashMap::drain`],
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[`collections::hash_set::Drain`],
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[`collections::hash_set::HashSet::drain`],
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[`collections::binary_heap::Drain`],
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[`collections::binary_heap::BinaryHeap::drain`],
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[`Vec::extend_from_slice`][] (renamed from `push_all`),
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[`Mutex::get_mut`], [`Mutex::into_inner`], [`RwLock::get_mut`],
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[`RwLock::into_inner`],
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[`Iterator::min_by_key`][] (renamed from `min_by`),
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[`Iterator::max_by_key`][] (renamed from `max_by`).
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* The [core library][1.6co] is stable, as are most of its APIs.
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* [The `assert_eq!` macro supports arguments that don't implement
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`Sized`][1.6ae], such as arrays. In this way it behaves more like
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`assert!`.
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* Several timer functions that take duration in milliseconds [are
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deprecated in favor of those that take `Duration`][1.6ms]. These
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include `Condvar::wait_timeout_ms`, `thread::sleep_ms`, and
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`thread::park_timeout_ms`.
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* The algorithm by which `Vec` reserves additional elements was
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[tweaked to not allocate excessive space][1.6a] while still growing
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exponentially.
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* `From` conversions are [implemented from integers to floats][1.6f]
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in cases where the conversion is lossless. Thus they are not
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implemented for 32-bit ints to `f32`, nor for 64-bit ints to `f32`
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or `f64`. They are also not implemented for `isize` and `usize`
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because the implementations would be platform-specific. `From` is
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also implemented from `f32` to `f64`.
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* `From<&Path>` and `From<PathBuf>` are implemented for `Cow<Path>`.
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* `From<T>` is implemented for `Box<T>`, `Rc<T>` and `Arc<T>`.
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* `IntoIterator` is implemented for `&PathBuf` and `&Path`.
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* [`BinaryHeap` was refactored][1.6bh] for modest performance
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improvements.
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* Sorting slices that are already sorted [is 50% faster in some
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cases][1.6s].
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Cargo
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-----
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* Cargo will look in `$CARGO_HOME/bin` for subcommands [by default][1.6c].
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* Cargo build scripts can specify their dependencies by emitting the
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[`rerun-if-changed`][1.6rr] key.
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* crates.io will reject publication of crates with dependencies that
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have a wildcard version constraint. Crates with wildcard
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dependencies were seen to cause a variety of problems, as described
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in [RFC 1241]. Since 1.5 publication of such crates has emitted a
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warning.
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* `cargo clean` [accepts a `--release` flag][1.6cc] to clean the
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release folder. A variety of artifacts that Cargo failed to clean
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are now correctly deleted.
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Misc
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----
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* The `unreachable_code` lint [warns when a function call's argument
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diverges][1.6dv].
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* The parser indicates [failures that may be caused by
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confusingly-similar Unicode characters][1.6uc]
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* Certain macro errors [are reported at definition time][1.6m], not
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expansion.
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Compatibility Notes
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-------------------
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* The compiler no longer makes use of the [`RUST_PATH`][1.6rp]
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environment variable when locating crates. This was a pre-cargo
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feature for integrating with the package manager that was
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accidentally never removed.
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* [A number of bugs were fixed in the privacy checker][1.6p] that
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could cause previously-accepted code to break.
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* [Modules and unit/tuple structs may not share the same name][1.6ts].
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* [Bugs in pattern matching unit structs were fixed][1.6us]. The tuple
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struct pattern syntax (`Foo(..)`) can no longer be used to match
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unit structs. This is a warning now, but will become an error in
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future releases. Patterns that share the same name as a const are
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now an error.
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* A bug was fixed that causes [rustc not to apply default type
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parameters][1.6xc] when resolving certain method implementations of
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traits defined in other crates.
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[1.6a]: https://github.com/rust-lang/rust/pull/29454
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[1.6ae]: https://github.com/rust-lang/rust/pull/29770
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[1.6bh]: https://github.com/rust-lang/rust/pull/29811
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[1.6c]: https://github.com/rust-lang/cargo/pull/2192
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[1.6cc]: https://github.com/rust-lang/cargo/pull/2131
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[1.6co]: http://doc.rust-lang.org/beta/core/index.html
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[1.6dv]: https://github.com/rust-lang/rust/pull/30000
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[1.6f]: https://github.com/rust-lang/rust/pull/29129
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[1.6m]: https://github.com/rust-lang/rust/pull/29828
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[1.6ms]: https://github.com/rust-lang/rust/pull/29604
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[1.6p]: https://github.com/rust-lang/rust/pull/29726
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[1.6rp]: https://github.com/rust-lang/rust/pull/30034
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[1.6rr]: https://github.com/rust-lang/cargo/pull/2134
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[1.6s]: https://github.com/rust-lang/rust/pull/29675
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[1.6ts]: https://github.com/rust-lang/rust/issues/21546
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[1.6uc]: https://github.com/rust-lang/rust/pull/29837
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[1.6us]: https://github.com/rust-lang/rust/pull/29383
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[1.6xc]: https://github.com/rust-lang/rust/issues/30123
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[RFC 1184]: https://github.com/rust-lang/rfcs/blob/master/text/1184-stabilize-no_std.md
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[RFC 1241]: https://github.com/rust-lang/rfcs/blob/master/text/1241-no-wildcard-deps.md
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[`ErrorKind::UnexpectedEof`]: http://doc.rust-lang.org/nightly/std/io/enum.ErrorKind.html#variant.UnexpectedEof
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[`Iterator::max_by_key`]: http://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.max_by_key
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[`Iterator::min_by_key`]: http://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.min_by_key
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[`Mutex::get_mut`]: http://doc.rust-lang.org/nightly/std/sync/struct.Mutex.html#method.get_mut
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[`Mutex::into_inner`]: http://doc.rust-lang.org/nightly/std/sync/struct.Mutex.html#method.into_inner
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[`Read::read_exact`]: http://doc.rust-lang.org/nightly/std/io/trait.Read.html#method.read_exact
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[`RwLock::get_mut`]: http://doc.rust-lang.org/nightly/std/sync/struct.RwLock.html#method.get_mut
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[`RwLock::into_inner`]: http://doc.rust-lang.org/nightly/std/sync/struct.RwLock.html#method.into_inner
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[`Vec::extend_from_slice`]: http://doc.rust-lang.org/nightly/collections/vec/struct.Vec.html#method.extend_from_slice
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[`collections::binary_heap::BinaryHeap::drain`]: http://doc.rust-lang.org/nightly/std/collections/binary_heap/struct.BinaryHeap.html#method.drain
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[`collections::binary_heap::Drain`]: http://doc.rust-lang.org/nightly/std/collections/binary_heap/struct.Drain.html
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[`collections::hash_map::Drain`]: http://doc.rust-lang.org/nightly/std/collections/hash_map/struct.Drain.html
336+
[`collections::hash_map::HashMap::drain`]: http://doc.rust-lang.org/nightly/std/collections/hash_map/struct.HashMap.html#method.drain
337+
[`collections::hash_set::Drain`]: http://doc.rust-lang.org/nightly/std/collections/hash_set/struct.Drain.html
338+
[`collections::hash_set::HashSet::drain`]: http://doc.rust-lang.org/nightly/std/collections/hash_set/struct.HashSet.html#method.drain
339+
[`fs::DirBuilder::create`]: http://doc.rust-lang.org/nightly/std/fs/struct.DirBuilder.html#method.create
340+
[`fs::DirBuilder::new`]: http://doc.rust-lang.org/nightly/std/fs/struct.DirBuilder.html#method.new
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[`fs::DirBuilder::recursive`]: http://doc.rust-lang.org/nightly/std/fs/struct.DirBuilder.html#method.recursive
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[`fs::DirBuilder`]: http://doc.rust-lang.org/nightly/std/fs/struct.DirBuilder.html
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[`os::unix::fs::DirBuilderExt::mode`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/trait.DirBuilderExt.html#tymethod.mode
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[`os::unix::fs::DirBuilderExt`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/trait.DirBuilderExt.html
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[`string::Drain`]: http://doc.rust-lang.org/nightly/std/string/struct.Drain.html
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[`string::String::drain`]: http://doc.rust-lang.org/nightly/std/string/struct.String.html#method.drain
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[`vec::Drain`]: http://doc.rust-lang.org/nightly/std/vec/struct.Drain.html
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[`vec::Vec::drain`]: http://doc.rust-lang.org/nightly/std/vec/struct.Vec.html#method.drain
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[`vec_deque::Drain`]: http://doc.rust-lang.org/nightly/std/collections/vec_deque/struct.Drain.html
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[`vec_deque::VecDeque::drain`]: http://doc.rust-lang.org/nightly/std/collections/vec_deque/struct.VecDeque.html#method.drain
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Version 1.5.0 (2015-12-10)
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==========================
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‎mk/main.mk

+1-1
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@ CFG_RELEASE_NUM=1.7.0
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# An optional number to put after the label, e.g. '.2' -> '-beta.2'
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# NB Make sure it starts with a dot to conform to semver pre-release
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# versions (section 9)
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CFG_PRERELEASE_VERSION=.3
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CFG_PRERELEASE_VERSION=.4
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# Append a version-dependent hash to each library, so we can install different
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# versions in the same place

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