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Zhengchao An
2b31bda6d1
actions/checkout writes its token into .git/config as an http extraheader, where it stays for the rest of the job. That matters more here than usual: pull_request jobs run on self-hosted runners and execute the PR's own build.rs, proc-macros and tests, any of which can read that file. Test and Lint holds actions: write on top of that, so its token can cancel runs and delete the Actions caches the whole pipeline now depends on — it was given persist-credentials: false when that permission was added, and this extends the same treatment to the other 45 checkouts. Two are exempt because the token IS the credential the job needs. helm-package's publish job pushes to rustfs/helm with it; clearing it would break chart publishing. nix-flake-update is exempt pending verification: it passes FLAKE_UPDATE_TOKEN to create-pull-request directly rather than reusing .git/config, so it very likely does not need persistence, but that is unproven and a broken weekly bot is not worth the guess. Both carry a persist-credentials-exempt comment saying which. scripts/security/check_persist_credentials.sh requires every checkout to either clear its credentials or carry that comment, so the decision stays visible in review rather than being an omission nobody notices. Refs: rustfs/backlog#1598, rustfs/backlog#1602