{"record":{"id":"1f5e9fb3d8093d49","repo":"GoogleContainerTools/skaffold","slug":"parsing-latest-version-from-gcs-w","errorCode":null,"errorMessage":"parsing latest version from GCS: %w","messagePattern":"parsing latest version from GCS: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"pkg/skaffold/update/update.go","lineNumber":88,"sourceCode":"\n// isUpdateCheckEnabled returns whether or not the update check is enabled\n// It is true by default, but setting it to any other value than true will disable the check\nfunc isUpdateCheckEnabled(configfile string) bool {\n\treturn EnableCheck && isConfigUpdateCheckEnabled(configfile)\n}\n\n// getLatestAndCurrentVersion uses a VERSION file stored on GCS to determine the latest released version\n// and returns it with the current version of Skaffold\nfunc getLatestAndCurrentVersion() (semver.Version, semver.Version, error) {\n\tnone := semver.Version{}\n\tversionString, err := DownloadLatestVersion()\n\tif err != nil {\n\t\treturn none, none, err\n\t}\n\tlog.Entry(context.TODO()).Tracef(\"latest skaffold version: %s\", versionString)\n\tlatest, err := version.ParseVersion(versionString)\n\tif err != nil {\n\t\treturn none, none, fmt.Errorf(\"parsing latest version from GCS: %w\", err)\n\t}\n\tcurrent, err := version.ParseVersion(version.Get().Version)\n\tif err != nil {\n\t\treturn none, none, fmt.Errorf(\"parsing current semver, skipping update check: %w\", err)\n\t}\n\treturn latest, current, nil\n}\n\nfunc DownloadLatestVersion() (string, error) {\n\tversionBytes, err := util.Download(LatestVersionURL)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"getting latest version info from GCS: %w\", err)\n\t}\n\treturn strings.TrimSuffix(string(versionBytes), \"\\n\"), nil\n}\n\nfunc releaseURL(v semver.Version) string {\n\treturn fmt.Sprintf(\"https://github.com/GoogleContainerTools/skaffold/releases/tag/v%s\", v.String())","sourceCodeStart":70,"sourceCodeEnd":106,"githubUrl":"https://github.com/GoogleContainerTools/skaffold/blob/a1189de023efc32d4b8e11f395acc678aa555011/pkg/skaffold/update/update.go#L70-L106","documentation":"getLatestAndCurrentVersion downloads the latest skaffold version string from GCS and parses it as semver. This error means the downloaded version string failed version.ParseVersion, so the update check cannot determine the latest release. The underlying parse error is wrapped via %w.","triggerScenarios":"version.ParseVersion(versionString) returns an error after Download(LatestVersionURL) succeeds but its body is not a valid semver string (e.g. HTML error page, '404 page not found', empty body, or a version without 'v'/semver shape).","commonSituations":"GCS bucket layout changed or the latest-version file was moved/renamed; corporate proxy or captive portal returns an HTML block page with HTTP 200; CDN serves a stale or corrupted version file; trailing content besides a semver token.","solutions":["Manually curl the LatestVersionURL and inspect what is returned; if it is not a bare semver string, the source file is wrong/missing.","Log or print the raw versionString before parsing to spot HTML/error pages.","Update skaffold or pin a known-good version; the update check is advisory, so you can proceed without it.","Check for proxy/VPN interference returning HTTP 200 HTML bodies and bypass the proxy for storage.googleapis.com."],"exampleFix":"// before: hard to tell what failed\nlatest, err := version.ParseVersion(versionString)\n// after: log the offending payload\nif err != nil {\n    log.Entry(context.TODO()).Debugf(\"latest version payload: %q\", versionString)\n    return none, none, fmt.Errorf(\"parsing latest version from GCS: %w\", err)\n}","handlingStrategy":"fallback","validationCode":"if v := strings.TrimSpace(raw); v == \"\" || semver.IsValid(v) == false && semver.IsValid(strings.TrimPrefix(v, \"v\")) == false {\n    // payload is not semver; skip update check\n}","typeGuard":"func isSemver(s string) bool { v := strings.TrimPrefix(strings.TrimSpace(s), \"v\"); return semver.IsValid(v) }\n","tryCatchPattern":"latest, current, err := getLatestAndCurrentVersion(ctx)\nif errors.Is/As parse failure or string contains 'parsing latest version from GCS' {\n    log.Debug(\"skipping update check\")\n} else { /* proceed */ }","preventionTips":["Validate the raw payload parses as semver before trusting it","Log the raw response body on parse failure for diagnosis","Treat update checks as advisory; degrade gracefully when remote data is malformed"],"tags":["versioning","semver","gcs","update-check"],"backgroundTag":"invalid-semver-string","analyzedSha":"a1189de023efc32d4b8e11f395acc678aa555011","analyzedAt":"2026-09-05T12:09:27.064Z","contentChangedAt":"2026-09-05T12:09:27.064Z","schemaVersion":2},"datasetVersion":"2026-09-12T17:17:11.597Z"}