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3 weeks ago
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We will be renaming the default branch of the rust-lang/rust repository from master to main on 2025-11-10. We've chosen main specifically as it's the default for newly-created repositories in GitHub and the renaming will leverage the GitHub tooling built to make this easier.
If you maintain a tool that currently assumes the default branch of rust-lang/rust is named master, using HEAD instead will work both before and after the rename.
After the rename, contributors will need to run the following commands in their local checkout of the repository, assuming that your remote registry is called origin:
git branch -m master main git fetch origin git branch -u origin/main main git remote set-head origin -a git remote prune originIf you have a fork of the rust-lang/rust repository on GitHub and would like to rename your default branch to match, you can follow GitHub's instructions.
