Auto merge of #4228 - rust-lang:renovate/rust-1.x, r=Turbo87

Update Rust to v1.57.0

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rust](https://github.com/rust-lang/rust) | minor | `1.56.1` -> `1.57.0` |

---

### Release Notes

<details>
<summary>rust-lang/rust</summary>

### [`v1.57.0`](https://github.com/rust-lang/rust/blob/master/RELEASES.md#Version-1570-2021-12-02)

[Compare Source](https://github.com/rust-lang/rust/compare/1.56.1...1.57.0)

\==========================

## Language

-   [Macro attributes may follow `#[derive]` and will see the original (pre-`cfg`) input.][87220]
-   [Accept curly-brace macros in expressions, like `m!{ .. }.method()` and `m!{ .. }?`.][88690]
-   [Allow panicking in constant evaluation.][89508]

## Compiler

-   [Create more accurate debuginfo for vtables.][89597]
-   [Add `armv6k-nintendo-3ds` at Tier 3\*.][88529]
-   [Add `armv7-unknown-linux-uclibceabihf` at Tier 3\*.][88952]
-   [Add `m68k-unknown-linux-gnu` at Tier 3\*.][88321]
-   [Add SOLID targets at Tier 3\*:][86191] `aarch64-kmc-solid_asp3`, `armv7a-kmc-solid_asp3-eabi`, `armv7a-kmc-solid_asp3-eabihf`

\* Refer to Rust's \[platform support page]\[platform-support-doc] for more
information on Rust's tiered platform support.

## Libraries

-   [Avoid allocations and copying in `Vec::leak`][89337]
-   [Add `#[repr(i8)]` to `Ordering`][89507]
-   [Optimize `File::read_to_end` and `read_to_string`][89582]
-   [Update to Unicode 14.0][89614]
-   [Many more functions are marked `#[must_use]`][89692], producing a warning
    when ignoring their return value. This helps catch mistakes such as expecting
    a function to mutate a value in place rather than return a new value.

## Stabilised APIs

-   [`[T; N]::as_mut_slice`][`array::as_mut_slice`]
-   [`[T; N]::as_slice`][`array::as_slice`]
-   [`collections::TryReserveError`][collections::TryReserveError]
-   [`HashMap::try_reserve`][HashMap::try_reserve]
-   [`HashSet::try_reserve`][HashSet::try_reserve]
-   [`String::try_reserve`][String::try_reserve]
-   [`String::try_reserve_exact`][String::try_reserve_exact]
-   [`Vec::try_reserve`][Vec::try_reserve]
-   [`Vec::try_reserve_exact`][Vec::try_reserve_exact]
-   [`VecDeque::try_reserve`][VecDeque::try_reserve]
-   [`VecDeque::try_reserve_exact`][VecDeque::try_reserve_exact]
-   [`Iterator::map_while`][Iterator::map_while]
-   [`iter::MapWhile`][iter::MapWhile]
-   [`proc_macro::is_available`][proc_macro::is_available]
-   [`Command::get_program`][Command::get_program]
-   [`Command::get_args`][Command::get_args]
-   [`Command::get_envs`][Command::get_envs]
-   [`Command::get_current_dir`][Command::get_current_dir]
-   [`CommandArgs`][CommandArgs]
-   [`CommandEnvs`][CommandEnvs]

These APIs are now usable in const contexts:

-   \[`hint::unreachable_unchecked`]

## Cargo

-   [Stabilize custom profiles][cargo/9943]

## Compatibility notes

## Internal changes

These changes provide no direct user facing benefits, but represent significant
improvements to the internals and overall performance of rustc
and related tools.

-   [Added an experimental backend for codegen with `libgccjit`.][87260]

[86191]: https://github.com/rust-lang/rust/pull/86191/

[87220]: https://github.com/rust-lang/rust/pull/87220/

[87260]: https://github.com/rust-lang/rust/pull/87260/

[88243]: https://github.com/rust-lang/rust/pull/88243/

[88321]: https://github.com/rust-lang/rust/pull/88321/

[88529]: https://github.com/rust-lang/rust/pull/88529/

[88690]: https://github.com/rust-lang/rust/pull/88690/

[88952]: https://github.com/rust-lang/rust/pull/88952/

[89337]: https://github.com/rust-lang/rust/pull/89337/

[89507]: https://github.com/rust-lang/rust/pull/89507/

[89508]: https://github.com/rust-lang/rust/pull/89508/

[89582]: https://github.com/rust-lang/rust/pull/89582/

[89597]: https://github.com/rust-lang/rust/pull/89597/

[89614]: https://github.com/rust-lang/rust/pull/89614/

[89692]: https://github.com/rust-lang/rust/issues/89692/

[cargo/9943]: https://github.com/rust-lang/cargo/pull/9943/

[`array::as_mut_slice`]: https://doc.rust-lang.org/std/primitive.array.html#method.as_mut_slice

[`array::as_slice`]: https://doc.rust-lang.org/std/primitive.array.html#method.as_slice

[`collections::TryReserveError`]: https://doc.rust-lang.org/std/collections/struct.TryReserveError.html

[`HashMap::try_reserve`]: https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.try_reserve

[`HashSet::try_reserve`]: https://doc.rust-lang.org/std/collections/hash_set/struct.HashSet.html#method.try_reserve

[`String::try_reserve`]: https://doc.rust-lang.org/alloc/string/struct.String.html#method.try_reserve

[`String::try_reserve_exact`]: https://doc.rust-lang.org/alloc/string/struct.String.html#method.try_reserve_exact

[`Vec::try_reserve`]: https://doc.rust-lang.org/std/vec/struct.Vec.html#method.try_reserve

[`Vec::try_reserve_exact`]: https://doc.rust-lang.org/std/vec/struct.Vec.html#method.try_reserve_exact

[`VecDeque::try_reserve`]: https://doc.rust-lang.org/std/collections/struct.VecDeque.html#method.try_reserve

[`VecDeque::try_reserve_exact`]: https://doc.rust-lang.org/std/collections/struct.VecDeque.html#method.try_reserve_exact

[`Iterator::map_while`]: https://doc.rust-lang.org/std/iter/trait.Iterator.html#method.map_while

[`iter::MapWhile`]: https://doc.rust-lang.org/std/iter/struct.MapWhile.html

[`proc_macro::is_available`]: https://doc.rust-lang.org/proc_macro/fn.is_available.html

[`Command::get_program`]: https://doc.rust-lang.org/std/process/struct.Command.html#method.get_program

[`Command::get_args`]: https://doc.rust-lang.org/std/process/struct.Command.html#method.get_args

[`Command::get_envs`]: https://doc.rust-lang.org/std/process/struct.Command.html#method.get_envs

[`Command::get_current_dir`]: https://doc.rust-lang.org/std/process/struct.Command.html#method.get_current_dir

[`CommandArgs`]: https://doc.rust-lang.org/std/process/struct.CommandArgs.html

[`CommandEnvs`]: https://doc.rust-lang.org/std/process/struct.CommandEnvs.html

</details>

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Author: bors

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ on:
 
 env:
   NODE_VERSION: 14.18.1
-  RUST_VERSION: 1.56.1
+  RUST_VERSION: 1.57.0
 
 jobs:
   frontend:

RustConfig

@@ -1 +1 @@
-VERSION=1.56.1
+VERSION=1.57.0