fix(self-update): make replacement atomic and race-safe - #5077

Open

cachebag wants to merge 9 commits into

rust-lang:mainfrom

cachebag:demo/self-update-race-after

Commits on Sep 17, 2026

test(self-update): reproduce proxy cleanup race
cachebag
committed
8a0f79f
style(self-update): move test constant
cachebag
committed
bc275e1
refactor(self-update): tidy imports and constant placement
cachebag
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71dad63
fix(self-update): serialize self-updates with a lock
cachebag
committed
8284e60
fix(self-update): move the updater under RUSTUP_HOME and mark its outcome
cachebag
committed
7118816
fix(self-update): remove abandoned updaters only once stale
cachebag
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97eae8d
fix(self-update): publish the rustup binary atomically
cachebag
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5adb25d
fix(self-update): remove abandoned pending binaries once stale
cachebag
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2a7a87d
fix(self-update): record DisplayVersion from the replacer on Windows
cachebag
committed
38048e7