# Rust: Demoting x86\_64-apple-darwin to Tier 2 with host tools

**URL:** <https://forum.devtalk.com/t/rust-demoting-x86-64-apple-darwin-to-tier-2-with-host-tools/211474>\
**Category:** Backend Official News\
**Tags:** newsbot, apple, rust, official-news\
**Created:** [19 August 2025 21:29 UTC](https://forum.devtalk.com/t/rust-demoting-x86-64-apple-darwin-to-tier-2-with-host-tools/211474 "2025-08-19T21:29:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![NewsBot](https://forum.devtalk.com/user_avatar/forum.devtalk.com/newsbot/32/1114_2.png) [@NewsBot](https://forum.devtalk.com/u/NewsBot)\
**Post date:** [19 August 2025 21:29 UTC](https://forum.devtalk.com/t/rust-demoting-x86-64-apple-darwin-to-tier-2-with-host-tools/211474/1 "2025-08-19T21:29:34Z")

</div>

A new [Rust](https://devtalk.com/rust) blog post/announcement has been posted!

> [@](#):
>
> In Rust 1.90.0, the target `x86_64-apple-darwin` will be demoted to Tier 2 with host tools. The standard library and the compiler will continue to be built and distributed, but automated tests of these components are no longer guaranteed to be run.
> 
> ## Background
> 
> Rust has supported macOS for a long time, with some amount of support dating back to Rust 0.1 and likely before that. During that time period, Apple has changed CPU architectures from x86 to x86\_64 and now to Apple silicon, ultimately announcing the [end of support](https://en.wikipedia.org/wiki/Mac_transition_to_Apple_silicon#Timeline) for the x86\_64 architecture.
> 
> Similarly, [GitHub has announced](https://github.blog/changelog/2025-07-11-upcoming-changes-to-macos-hosted-runners-macos-latest-migration-and-xcode-support-policy-updates/#macos-13-is-closing-down) that they will no longer provide free macOS x86\_64 runners for public repositories. The Rust Project uses these runners to execute automated tests for the `x86_64-apple-darwin` target. Since the [target tier policy](https://doc.rust-lang.org/stable/rustc/target-tier-policy.html) requires that Tier 1 platforms must run tests in CI, the `x86_64-apple-darwin` target must be demoted to Tier 2.
> 
> ## What changes?
> 
> Starting with Rust 1.90.0, `x86_64-apple-darwin` will be Tier 2 with host tools. For users, nothing will change immediately; builds of both the standard library and the compiler will still be distributed by the Rust Project for use via `rustup` or alternative installation methods.
> 
> Over time, this target will likely accumulate bugs faster due to reduced testing.
> 
> ## Future
> 
> If the \<code...

Get the full details here: [Demoting x86\_64-apple-darwin to Tier 2 with host tools | Rust Blog](https://blog.rust-lang.org/2025/08/19/demoting-x86-64-apple-darwin-to-tier-2-with-host-tools/)