The rustup team is happy to announce the release of rustup version 1.28.1. Rustup is the recommended tool to install Rust, a programming language that is empowering everyone to build reliable and efficient software. Rustup Rust Challenges with rustup 1.28.0 rustup 1.28.0 was a significant release with many changes, and there was a quick response from many folks that this release broke their processes. While we considered yanking the release, we worried that this would cause problems for people who had already updated to adopt some of the changes. Instead, we are rolling forward with 1.28.1 today and potentially further bugfix releases to address the feedback that comes in. We value all constructive feedback -- please keep it coming in the issue tracker. In particular, the change with regard to implicit toolchain installation is being discussed in this issue. issue tracker this issue What's new in rustup 1.28.1 This release contains the following fixes: Automatic install is enabled by default but can be opted out by setting RUSTUP_AUTO_INSTALL environment variable to 0. pr#4214 pr#4227
rustup show active-toolchain will only print a single line, as it did in 1.27. pr#4221
Fixed a bug in the reqwest backend that would erroneously timeout downloads after 30s. pr#4218
Use relative symlinks for proxies. pr#4226 Automatic install is enabled by default but can be opted out by setting RUSTUP_AUTO_INSTALL environment variable to 0. pr#4214 pr#4227 RUSTUP_AUTO_INSTALL 0 pr#4214 pr#4227 rustup show active-toolchain will only print a single line, as it did in 1.27. pr#4221 rustup show active-toolchain pr#4221 Fixed a bug in the reqwest backend that would erroneously timeout downloads after 30s. pr#4218 pr#4218 Use relative symlinks for proxies. pr#4226 pr#4226 How to update If you have a previous version of rustup installed, getting rustup 1.28.1 is as easy as stopping any programs which may be using Rustup (e.g. closing your IDE) and running: $ rustup self update $ rustup self update Rustup will also automatically update itself at the end of a normal toolchain update: $ rustup update $ rustup update If you don't have it already, you can get rustup from the appropriate page on our website. get rustup Rustup's documentation is also available in the rustup book. the rustup book Caveats Rustup releases can come with problems not caused by rustup itself but just due to having a new release. As such, we recommend paying attention to the following potential issues in particular: Anti-malware scanners might be blocking rustup or stopping it from creating or copying files (especially when installing rust-docs, since it contains many small files).


In your CI environment, rustup might fail when trying to perform a self-update.
This is a known issue, and in the case where this issue does occur, we recommend applying the following workaround at the beginning of your workflow:
$ rustup set auto-self-update disable

Also, starting from 1.28.0, rustup will no longer attempt to self-update in CI environments, so this workaround should not be necessary in the future. Anti-malware scanners might be blocking rustup or stopping it from creating or copying files (especially when installing rust-docs, since it contains many small files). Anti-malware scanners might be blocking rustup or stopping it from creating or copying files (especially when installing rust-docs, since it contains many small files). rust-docs In your CI environment, rustup might fail when trying to perform a self-update.
This is a known issue, and in the case where this issue does occur, we recommend applying the following workaround at the beginning of your workflow:
$ rustup set auto-self-update disable

Also, starting from 1.28.0, rustup will no longer attempt to self-update in CI environments, so this workaround should not be necessary in the future. In your CI environment, rustup might fail when trying to perform a self-update. This is a known issue, and in the case where this issue does occur, we recommend applying the following workaround at the beginning of your workflow: known issue $ rustup set auto-self-update disable $ rustup set auto-self-update disable Also, starting from 1.28.0, rustup will no longer attempt to self-update in CI environments, so this workaround should not be necessary in the future. These issues should be automatically resolved in a few weeks when the anti-malware scanners are updated to be aware of the new rustup release, and the hosted version is updated across all CI runners. Thanks Thanks to the rustup and t-release team members who came together to quickly address these issues. By The Rustup Team Also published here here Photo by Milad Fakurian on Unsplash Milad Fakurian Unsplash

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