{"record":{"id":"c1cc031bb07656a0","repo":"GoogleContainerTools/skaffold","slug":"getting-last-log-file-w","errorCode":null,"errorMessage":"getting last log file %w","messagePattern":"getting last log file %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/skaffold/event/v2/event.go","lineNumber":347,"sourceCode":"\t\t\treturn fmt.Errorf(\"marshalling event: %w\", err)\n\t\t}\n\t\tif _, err := f.WriteString(contents.String() + \"\\n\"); err != nil {\n\t\t\treturn fmt.Errorf(\"writing string: %w\", err)\n\t\t}\n\t}\n\thandler.logLock.Unlock()\n\treturn nil\n}\n\n// SaveLastLog writes the output from the previous run to the specified filepath\nfunc SaveLastLog(fp string) error {\n\thandler.logLock.Lock()\n\tdefer handler.logLock.Unlock()\n\n\t// Create file to write logs to\n\tfp, err := lastLogFile(fp)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"getting last log file %w\", err)\n\t}\n\t// Ensure that the filepath provided has the directories available when attemping to save the file.\n\tdir := filepath.Dir(fp)\n\tif err := os.MkdirAll(dir, 0700); err != nil {\n\t\treturn fmt.Errorf(\"unable to create directory %q: %w\", dir, err)\n\t}\n\tf, err := os.OpenFile(fp, os.O_TRUNC|os.O_WRONLY|os.O_CREATE, 0600)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"opening %s: %w\", fp, err)\n\t}\n\tdefer f.Close()\n\n\t// Iterate over events, grabbing contents only from SkaffoldLogEvents\n\tvar contents bytes.Buffer\n\tfor _, ev := range handler.eventLog {\n\t\tif sle := ev.GetSkaffoldLogEvent(); sle != nil {\n\t\t\t// Strip ansi color sequences as this makes it easier to deal with when pasting into github issues\n\t\t\tif _, err = contents.WriteString(stripansi.Strip(sle.Message)); err != nil {","sourceCodeStart":329,"sourceCodeEnd":365,"githubUrl":"https://github.com/GoogleContainerTools/skaffold/blob/a1189de023efc32d4b8e11f395acc678aa555011/pkg/skaffold/event/v2/event.go#L329-L365","documentation":"SaveLastLog calls lastLogFile(fp) to resolve the path of the log file to write. When the caller passes an empty path, lastLogFile falls back to ~/.skaffold/last.log via homedir.Dir(); if that resolution fails, this error wraps the cause. The save cannot proceed because no destination path could be determined.","triggerScenarios":"Calling SaveLastLog(\"\") (or via TestSaveLastLog) on a system where homedir.Dir() fails — HOME unset, no passwd entry for the user, or the home directory resolution library erroring.","commonSituations":"Running skaffold in a minimal container or cron job with no HOME env var; running as a system user without a home directory; Windows profile redirection issues.","solutions":["Pass an explicit filepath argument to SaveLastLog instead of relying on the ~/.skaffold/last.log default.","Set the HOME environment variable to a writable directory for the running process.","Check that the OS user has a valid home directory entry (getent passwd $(whoami))."],"exampleFix":"// before\nerr := event.SaveLastLog(\"\")\n// after\nerr := event.SaveLastLog(filepath.Join(os.TempDir(), \"skaffold-last.log\"))","handlingStrategy":"fallback","validationCode":"if os.Getenv(\"HOME\") == \"\" && runtime.GOOS != \"windows\" {\n    return errors.New(\"HOME is unset; pass an explicit path to SaveLastLog\")\n}","typeGuard":null,"tryCatchPattern":"if err := event.SaveLastLog(\"\"); err != nil {\n    if strings.Contains(err.Error(), \"getting last log file\") {\n        return event.SaveLastLog(filepath.Join(os.TempDir(), \"last.log\"))\n    }\n    return err\n}","preventionTips":["Always pass an explicit path in containerized/cron environments","Ensure HOME is set in the process environment","Verify the OS user has a valid home directory"],"tags":["filesystem","configuration","home-directory"],"backgroundTag":"home-directory-not-found","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"}