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# Rustup 1.29.1 beta: call for testing!

**[Inside Rust Blog](https://daily.dev/sources/insiderustblog)** · 2 min read · 13 upvotes · 0 comments

## Summary

Rustup 1.29.1 beta is available for testing. Key changes include improved concurrency in certain rustup operations, deprecation of implicit toolchain installation in rustup-init and rustup invocations (now produces warnings), a requirement for --force-non-host when installing i686-pc-windows-* host toolchains on 64-bit Windows, a Windows installation bug fix for rustup-init.sh, renaming of 'target triple' to 'target tuple' throughout the project, and official support for aarch64-pc-windows-gnullvm as a host platform. Testers can switch to the dev environment by setting the RUSTUP_UPDATE_ROOT environment variable.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://blog.rust-lang.org/inside-rust/2026/07/14/rustup-1.29.1-beta-cft>

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