Merge PR #1434: Rust 2024 call for testing

Author: traviscross

posts/2024-11-27-Rust-2024-public-testing.md

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+---
+layout: post
+title: "Rust 2024 call for testing"
+author: "Eric Huss & TC"
+team: the Edition 2024 Project Group <https://doc.rust-lang.org/nightly/edition-guide/rust-2024/index.html>
+---
+
+# Rust 2024 call for testing
+
+We've been hard at work on Rust 2024. We're thrilled about how it has turned out. It's going to be the largest edition since Rust 2015. It has a great many improvements that make the language more consistent and ergonomic, that further upon our relentless commitment to safety, and that will open the door to long-awaited features such as `gen` blocks, `let` chains, and the never (`!`) type. For more on the changes, see the nightly [Edition Guide](https://doc.rust-lang.org/nightly/edition-guide/rust-2024/index.html).
+
+As planned, we recently merged the feature-complete Rust 2024 edition [to the release train](https://github.com/rust-lang/rust/pull/133349) for Rust 1.85. It has now entered **nightly beta**[^1].
+
+You can help right now to make this edition a success by testing Rust 2024 on your own projects using nightly Rust. Migrating your projects to the new edition is straightforward and mostly automated. Here's how:
+
+1. Install the most recent nightly with `rustup update nightly`.
+2. In your project, run `cargo +nightly fix --edition`.
+3. Edit `Cargo.toml` and change the edition field to say `edition = "2024"` and, if you have a `rust-version` specified, set `rust-version = "1.85"`.
+4. Run `cargo +nightly check` to verify your project now works in the new edition.
+5. Run some tests, and try out the new features!
+
+(More details on how to migrate can be found [here](https://doc.rust-lang.org/nightly/edition-guide/editions/transitioning-an-existing-project-to-a-new-edition.html) and within each of the [chapters](https://doc.rust-lang.org/nightly/edition-guide/rust-2024/index.html) describing the changes in Rust 2024.)
+
+If you encounter any problems or see areas where we could make the experience better, tell us about it by [filing an issue](https://github.com/rust-lang/rust/issues/new/choose).
+
+### Coming next
+
+Rust 2024 will enter the beta channel on 2025-01-09, and will be released to stable Rust with Rust 1.85 on 2025-02-20.
+
+[^1]: That is, it's still in nightly (not in the beta channel), but the edition items are frozen in a way similar to it being in the beta channel, and as with any beta, we'd like wide testing.