Updated RELEASES.md for 1.30.0
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Aaron Power
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RELEASES.md
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RELEASES.md
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Version 1.30.0 (2018-10-25)
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==========================
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Language
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--------
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- [Procedural macros are now available.][52081] These kinds of macros allow for
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more powerful code generation, there is a [new chapter available][proc-macros]
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in Rust Programming Language book that goes further in depth.
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- [You can now use keywords as identifiers using the raw identifiers
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syntax (`r#`).][53236] e.g. `let r#bool = true;`
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- [Using anonymous parameters in traits is now deprecated with a warning and
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will be a hard error in the 2018 edition.][53272]
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- [You can now use `crate` in paths.][54404] This allows you to refer to the
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crate root in the path. e.g. `use crate::foo;` refers to `foo` in `src/lib.rs`.
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- [Using a external crate now no longer requires being prefixed with `::`.][54404]
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e.g. previously using a external crate in a module without a use statement
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required `let json = ::serde_json::from_str(foo);` can now be written
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as `let json = serde_json::from_str(foo);`.
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- [You can now apply the `#[used]` attribute to static items to prevent the
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compiler from optimising them away even if they appear to be unused.][51363]
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e.g. `#[used] static FOO: u32 = 1;`
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- [You can now import and reexport macros from other crates with the `use`
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syntax.][50911] Macros exported with `#[macro_export]` are now placed into
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the root module of the crate. If your macro relies on calling other local
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macros it is recommended to export with the
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`#[macro_export(local_inner_macros)]` attribute so that users won't have to
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import those macros.
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- [`mod.rs` files are now optional.][54146] Previously if you had a `foo` module
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with a `bar` submodule, you would have `src/foo/mod.rs` and `src/foo/bar.rs`.
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Now you can have `src/foo.rs` and `src/foo/bar.rs` to achieve the same effect.
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- [You can now catch visibility keywords (e.g. `pub`, `pub(crate)`) in macros
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using the `vis` specifier.][53370]
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- [Non-macro attributes now allow all forms of literals not just
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strings.][53044] e.g. Previously you would write `#[attr("true")]` you can now
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write `#[attr(true)]`.
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- [You can now specify a function to handle a panic in the Rust runtime with the
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`#[panic_handler]` attribute.][51366]
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Compiler
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--------
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- [Added the `riscv32imc-unknown-none-elf` target.][53822]
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- [Added the `aarch64-unknown-netbsd` target][53165]
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Libraries
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---------
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- [`ManuallyDrop` now allows the inner type to be unsized.][53033]
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Stabilized APIs
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---------------
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- [`Ipv4Addr::BROADCAST`]
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- [`Ipv4Addr::LOCALHOST`]
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- [`Ipv4Addr::UNSPECIFIED`]
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- [`Ipv6Addr::LOCALHOST`]
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- [`Ipv6Addr::UNSPECIFIED`]
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- [`Iterator::find_map`]
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The following methods are a replacement methods for `trim_left`, `trim_right`,
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`trim_left_matches`, and `trim_right_matches`. Which will be deprecated
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in 1.33.0.
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- [`str::trim_end_matches`]
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- [`str::trim_end`]
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- [`str::trim_start_matches`]
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- [`str::trim_start`]
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Cargo
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----
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- [`cargo run` doesn't require specifying a package in workspaces.][cargo/5877]
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- [`cargo doc` now supports `--message-format=json`.][cargo/5878] This is
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equivalent to calling `rustdoc --error-format=json`.
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- [You can specify which edition to create a project in cargo
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with `cargo new --edition`.][cargo/5984] Currently only `2015` is a
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valid option.
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- [Cargo will now provide a progress bar for builds.][cargo/5995]
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Misc
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----
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- [`rustdoc` allows you to specify what edition to treat your code as with the
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`--edition` option.][54057]
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- [`rustdoc` now has the `--color` (Specify whether to output color) and
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`--error-format` (Specify error format e.g. `json`) options.][53003]
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- [We now distribute a `rust-gdbgui` script that invokes `gdbgui` with Rust
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debug symbols.][53774]
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- [Attributes from Rust tools such as `rustfmt` or `clippy` are now
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available.][53459] e.g. `#[rustfmt::skip]` will skip formatting the next item.
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[50911]: https://github.com/rust-lang/rust/pull/50911/
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[51363]: https://github.com/rust-lang/rust/pull/51363/
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[51366]: https://github.com/rust-lang/rust/pull/51366/
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[52081]: https://github.com/rust-lang/rust/pull/52081/
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[53003]: https://github.com/rust-lang/rust/pull/53003/
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[53033]: https://github.com/rust-lang/rust/pull/53033/
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[53044]: https://github.com/rust-lang/rust/pull/53044/
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[53165]: https://github.com/rust-lang/rust/pull/53165/
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[53213]: https://github.com/rust-lang/rust/pull/53213/
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[53236]: https://github.com/rust-lang/rust/pull/53236/
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[53272]: https://github.com/rust-lang/rust/pull/53272/
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[53370]: https://github.com/rust-lang/rust/pull/53370/
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[53459]: https://github.com/rust-lang/rust/pull/53459/
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[53774]: https://github.com/rust-lang/rust/pull/53774/
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[53822]: https://github.com/rust-lang/rust/pull/53822/
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[54057]: https://github.com/rust-lang/rust/pull/54057/
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[54146]: https://github.com/rust-lang/rust/pull/54146/
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[54404]: https://github.com/rust-lang/rust/pull/54404/
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[cargo/5877]: https://github.com/rust-lang/cargo/pull/5877/
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[cargo/5878]: https://github.com/rust-lang/cargo/pull/5878/
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[cargo/5984]: https://github.com/rust-lang/cargo/pull/5984/
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[cargo/5995]: https://github.com/rust-lang/cargo/pull/5995/
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[proc-macros]: https://doc.rust-lang.org/book/2018-edition/ch19-06-macros.html
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[`Ipv4Addr::BROADCAST`]: https://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#associatedconstant.BROADCAST
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[`Ipv4Addr::LOCALHOST`]: https://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#associatedconstant.LOCALHOST
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[`Ipv4Addr::UNSPECIFIED`]: https://doc.rust-lang.org/nightly/std/net/struct.Ipv4Addr.html#associatedconstant.UNSPECIFIED
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[`Ipv6Addr::LOCALHOST`]: https://doc.rust-lang.org/nightly/std/net/struct.Ipv6Addr.html#associatedconstant.LOCALHOST
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[`Ipv6Addr::UNSPECIFIED`]: https://doc.rust-lang.org/nightly/std/net/struct.Ipv6Addr.html#associatedconstant.UNSPECIFIED
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[`Iterator::find_map`]: https://doc.rust-lang.org/std/iter/trait.Iterator.html#method.find_map
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[`str::trim_end_matches`]: https://doc.rust-lang.org/nightly/std/primitive.str.html#method.trim_end_matches
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[`str::trim_end`]: https://doc.rust-lang.org/nightly/std/primitive.str.html#method.trim_end
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[`str::trim_start_matches`]: https://doc.rust-lang.org/nightly/std/primitive.str.html#method.trim_start_matches
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[`str::trim_start`]: https://doc.rust-lang.org/nightly/std/primitive.str.html#method.trim_start
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Version 1.29.2 (2018-10-11)
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===========================
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@ -6,6 +127,7 @@ Version 1.29.2 (2018-10-11)
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[54639]: https://github.com/rust-lang/rust/pull/54639
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Version 1.29.1 (2018-09-25)
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===========================
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@ -19,6 +141,7 @@ Security Notes
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Thank you to Scott McMurray for responsibily disclosing this vulnerability to
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us.
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Version 1.29.0 (2018-09-13)
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==========================
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@ -73,7 +196,10 @@ Compatibility Notes
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Consider using the `home_dir` function from
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https://crates.io/crates/dirs instead.
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- [`rustc` will no longer silently ignore invalid data in target spec.][52330]
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- [`cfg` attributes and `--cfg` command line flags are now more
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strictly validated.][53893]
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[53893]: https://github.com/rust-lang/rust/pull/53893/
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[52861]: https://github.com/rust-lang/rust/pull/52861/
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[52656]: https://github.com/rust-lang/rust/pull/52656/
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[52239]: https://github.com/rust-lang/rust/pull/52239/
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