The rustup team released version 1.28.1 to address issues from the previous 1.28.0 release, which disrupted many users' processes. Rather than yank the problematic version, they opted for a new release that includes default automatic installation, simplified active toolchain output, and fixes for download timeouts. Feedback through the issue tracker is encouraged as further bugfix updates may follow. Users can easily update to 1.28.1 through a self-update command or a normal toolchain update.
Automatic install is enabled by default but can be opted out by setting RUSTUP_AUTO_INSTALL environment variable to 0.
rustup show active-toolchain will only print a single line, as it did in 1.27.
Fixed a bug in the reqwest backend that would erroneously timeout downloads after 30s.
We value all constructive feedback -- please keep it coming in the issue tracker.
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