fix: Map expired artifact to ErrBlobNotFound#4087
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zhming0
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Jul 15, 2026
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LGTM with a really minor note that this is a OSS repo. Some people might audit our changes, so we should make PR description descriptive for 3rd party reader 🙂
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Description
Map nsc's "the artifact has expired" download error to ErrBlobNotFound (alongside "not found"), so an expired HA cache entry is treated as a cache miss and invalidated instead of failing the build.
Context
https://linear.app/buildkite/issue/A-1541/namespace-artifact-expiry-breaks-ha-cache-bust-mechanism
Changes
Testing
go test ./...). Buildkite employees may check this if the pipeline has run automatically.go tool gofumpt -extra -w .)Affiliation (optional, external contributors)
Disclosures / Credits