Warning: Avoid upgrading rustup for now

[Noratrieb]

Description

Rustup just released a new version, 1.28, which to my knowledge isn't in the images yet: https://blog.rust-lang.org/2025/03/02/Rustup-1.28.0.html

This version contains a significant breaking change that will likely break a lot of users (no longer installing toolchains from rust-toolchain.toml by default).
This change is currently under consideration from the rustup team to be rolled back (see https://rust-lang.zulipchat.com/#narrow/channel/241545-t-release/topic/Rustup.201.2E28.2E0.20-.20testing.2Frelease).

You should avoid upgrading it in the runner images for now until a decision has been made to avoid unnecessary breakage for users.

I am misusing the bug template for this because I couldn't find any better template^^.

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 20.04
• Ubuntu 22.04
• Ubuntu 24.04
• macOS 13
• macOS 13 Arm64
• macOS 14
• macOS 14 Arm64
• macOS 15
• macOS 15 Arm64
• Windows Server 2019
• Windows Server 2022
• Windows Server 2025

Image version and build link

N/A

Is it regression?

N/A

Expected behavior

N/A

Actual behavior

N/A

Repro steps

N/A

[sureshe456]

Hi @Noratrieb , We will take a look into the issue and keep you posted with updates.

[lakshminarayana02]

Dear @Noratrieb
We understand your requirement and found we have the most recent version 1.27 in our images, and just released version 1.28 (on March 2, 2025), which will be updated in future releases, kindly bear with us.

We are changing the tag to Feature Request because it does not fall under the Bug category.

[Noratrieb]

Rust 1.28.1 has been released with a fix: https://blog.rust-lang.org/2025/03/04/Rustup-1.28.1.html

Thank you for taking a look, this is fixed now and you can upgrade now.