The rustup team has published a new point release of rustup, 1.29.3.

Rustup is the recommended tool to install Rust, a programming language that empowers everyone to build reliable and efficient software.

What's new in rustup 1.29.3

This new patch release has fixed some minor regressions over the previous one:

• Fixed "Illegal instruction" error on certain x86_64 CPUs without SSE4.1. pr#5162

• Fixed "lock() not supported" error on Solaris. pr#5167

Further details are available in the changelog!

How to update

If you have a previous version of rustup installed, getting the new one is as easy as stopping any programs which may be using rustup (e.g. closing your IDE) and running:

$ rustup self update

Rustup will also automatically update itself at the end of a normal toolchain update:

$ rustup update

For this particular release, if you have encountered any issues during self-update, you may try to update rustup manually by following the steps below:

1. Download the corresponding rustup-init binary for your platform.
2. Make double sure that no other rustup processes are running.
3. Replace your existing rustup binary with the downloaded rustup-init renamed to rustup.
   • As a reminder, this binary is often located at $HOME/.cargo/bin/rustup, or $CARGO_HOME/bin/rustup if you have overridden the $CARGO_HOME environment variable.

If you don't have it already, you can get rustup from the appropriate page on our website.

Rustup's documentation is also available in the rustup book.

Caveats

Rustup releases can come with problems not caused by rustup itself but just due to having a new release.

In particular, anti-malware scanners might block rustup or stop it from creating or copying files, especially when installing rust-docs which contains many small files.

Issues like this should be automatically resolved in a few weeks when the anti-malware scanners are updated to be aware of the new rustup release.

Thanks

Thanks again to all the contributors who made this rustup release possible!