{"record":{"id":"ab8e29957392a73b","repo":"github/github-mcp-server","slug":"failed-to-write-readme-md-w","errorCode":null,"errorMessage":"failed to write README.md: %w","messagePattern":"failed to write README\\.md: %w","errorType":"console","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"cmd/github-mcp-server/generate_docs.go","lineNumber":101,"sourceCode":"\t\treturn fmt.Errorf(\"failed to read README.md: %w\", err)\n\t}\n\n\t// Replace toolsets section\n\tupdatedContent, err := replaceSection(string(content), \"START AUTOMATED TOOLSETS\", \"END AUTOMATED TOOLSETS\", toolsetsDoc)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\t// Replace tools section\n\tupdatedContent, err = replaceSection(updatedContent, \"START AUTOMATED TOOLS\", \"END AUTOMATED TOOLS\", toolsDoc)\n\tif err != nil {\n\t\treturn err\n\t}\n\n\t// Write back to file\n\terr = os.WriteFile(readmePath, []byte(updatedContent), 0600)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"failed to write README.md: %w\", err)\n\t}\n\n\treturn nil\n}\n\nfunc generateRemoteServerDocs(docsPath string) error {\n\tcontent, err := os.ReadFile(docsPath) //#nosec G304\n\tif err != nil {\n\t\treturn fmt.Errorf(\"failed to read docs file: %w\", err)\n\t}\n\n\ttoolsetsDoc := generateRemoteToolsetsDoc()\n\n\t// Replace content between markers\n\tupdatedContent, err := replaceSection(string(content), \"START AUTOMATED TOOLSETS\", \"END AUTOMATED TOOLSETS\", toolsetsDoc)\n\tif err != nil {\n\t\treturn err\n\t}","sourceCodeStart":83,"sourceCodeEnd":119,"githubUrl":"https://github.com/github/github-mcp-server/blob/0ea1f775a7c73eff1bd2e25904d01136756bbfe2/cmd/github-mcp-server/generate_docs.go#L83-L119","documentation":"Returned by generateReadmeDocs when os.WriteFile(readmePath, …, 0600) fails after the README's automated sections were successfully replaced. This is the final persistence step; failure means the process cannot write to README.md at the given path.","triggerScenarios":"README.md is owned by another user or marked read-only (no write permission); the path flag points to a directory or an unwritable location; disk full; on some setups, running the generator while an editor/IDE holds an exclusive lock.","commonSituations":"CI containers running as a non-root user against root-owned checkouts; read-only bind mounts; SELinux/AppArmor denials; running on a branch where README.md permissions were changed.","solutions":["Check write permission on the file and its directory (ls -l README.md); chmod u+w README.md or fix ownership","If in CI, ensure the checkout step yields writable files (e.g. git config safe.directory / correct USER)","Verify the path is a regular file, not a directory, when using a custom flag","Free disk space if the volume is full"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"// Check writability before running the generator\nif info, err := os.Stat(readmePath); err == nil {\n    if info.Mode().Perm()&0200 == 0 {\n        log.Fatalf(\"%s is not writable\", readmePath)\n    }\n}","typeGuard":null,"tryCatchPattern":"if err := generateReadmeDocs(readmePath); err != nil {\n    if errors.Is(err, fs.ErrPermission) || strings.Contains(err.Error(), \"failed to write README.md\") {\n        log.Fatalf(\"cannot write %s — fix permissions (chmod u+w) or CI user\", readmePath)\n    }\n    return err\n}","preventionTips":["Make checked-out docs writable in CI (correct user or chmod)","Avoid read-only mounts for docs generation jobs","Run generators as the user who owns the checkout"],"tags":["codegen","docs","readme","file-io","permissions"],"backgroundTag":null,"analyzedSha":"0ea1f775a7c73eff1bd2e25904d01136756bbfe2","analyzedAt":"2026-08-15T18:10:19.804Z","schemaVersion":2},"datasetVersion":"2026-08-16T03:17:38.424Z"}