{"record":{"id":"6606fe6a02e62e4b","repo":"charmbracelet/crush","slug":"failed-to-create-parent-directories-w-6606fe","errorCode":null,"errorMessage":"failed to create parent directories: %w","messagePattern":"failed to create parent directories: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/agent/tools/multiedit.go","lineNumber":165,"sourceCode":"\nfunc processMultiEditWithCreation(edit editContext, params MultiEditParams, call fantasy.ToolCall) (fantasy.ToolResponse, error) {\n\t// First edit creates the file\n\tfirstEdit := params.Edits[0]\n\tif firstEdit.OldString != \"\" {\n\t\treturn fantasy.NewTextErrorResponse(\"first edit must have empty old_string for file creation\"), nil\n\t}\n\n\t// Check if file already exists\n\tif _, err := os.Stat(params.FilePath); err == nil {\n\t\treturn fantasy.NewTextErrorResponse(fmt.Sprintf(\"file already exists: %s\", params.FilePath)), nil\n\t} else if !os.IsNotExist(err) {\n\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to access file: %w\", err)\n\t}\n\n\t// Create parent directories\n\tdir := filepath.Dir(params.FilePath)\n\tif err := os.MkdirAll(dir, 0o755); err != nil {\n\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"failed to create parent directories: %w\", err)\n\t}\n\n\tcurrentContent, failedEdits, whitespaceCorrected := applyEditsToContent(firstEdit.NewString, params.Edits[1:], 1)\n\n\t// Get session and message IDs\n\tsessionID := GetSessionFromContext(edit.ctx)\n\tif sessionID == \"\" {\n\t\treturn fantasy.ToolResponse{}, fmt.Errorf(\"session ID is required for creating a new file\")\n\t}\n\n\t// Check permissions\n\t_, additions, removals := diff.GenerateDiff(\"\", currentContent, strings.TrimPrefix(params.FilePath, edit.workingDir))\n\n\teditsApplied := len(params.Edits) - len(failedEdits)\n\tvar description string\n\tif len(failedEdits) > 0 {\n\t\tdescription = fmt.Sprintf(\"Create file %s with %d of %d edits (%d failed)\", params.FilePath, editsApplied, len(params.Edits), len(failedEdits))\n\t} else {","sourceCodeStart":147,"sourceCodeEnd":183,"githubUrl":"https://github.com/charmbracelet/crush/blob/7944b8e52225d8805e31eacbf7ef24856b0dfb7a/internal/agent/tools/multiedit.go#L147-L183","documentation":"This error wraps an os.MkdirAll failure when MultiEdit creates a brand-new file and its parent directories don't yet exist. The tool needs the target directory present before writing; if mkdir fails (permissions, read-only fs, invalid path, path is a file), the whole new-file creation aborts with this wrapped error. It only fires on the new-file path of processMultiEditWithCreation.","triggerScenarios":"Calling MultiEdit with a file_path whose directory does not exist or cannot be created: os.MkdirAll returns EACCES, ENOTDIR (a path component is a regular file), EROFS, or a name-too-long error.","commonSituations":"Running crush in a read-only container or project directory; the agent hallucinating a path where a file component exists as a directory (e.g. src/main.go already a file and target src/main.go/new.go); disk-full or SELinux/ACL denial on the working dir.","solutions":["Check that no path component of the target is an existing regular file; pick a different path or remove the blocking file","Verify the process has write permission on the closest existing ancestor directory (ls -ld)","If the filesystem is read-only, remount rw or run from a writable directory","Fix the underlying OS error surfaced by %w in the message"],"exampleFix":"// before\nos.WriteFile(\"src/missing/new.go\", data, 0o644) // parent missing or blocked\n// after\nif err := os.MkdirAll(filepath.Dir(\"src/missing/new.go\"), 0o755); err != nil { return err }\nos.WriteFile(\"src/missing/new.go\", data, 0o644)","handlingStrategy":"validation","validationCode":"if dir := filepath.Dir(p); dir != \".\" {\n    if st, err := os.Stat(dir); err == nil && !st.IsDir() {\n        return fmt.Errorf(\"%s exists and is not a directory\", dir)\n    }\n}\nif err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil { return err }","typeGuard":null,"tryCatchPattern":"var pathErr *os.PathError\nif errors.As(err, &pathErr) {\n    switch errors.Unwrap(err) {\n    case syscall.EACCES: /* fix perms */\n    case syscall.ENOTDIR: /* fix path */\n    }\n}","preventionTips":["Run the agent from a writable directory","Never name a file component the same as an intended directory","Check free space and mount flags (ro) before bulk edits","Read the wrapped os.PathError to identify the failing component"],"tags":["filesystem","permissions","tool"],"backgroundTag":"mkdir-permission-denied","analyzedSha":"7944b8e52225d8805e31eacbf7ef24856b0dfb7a","analyzedAt":"2026-08-29T12:48:59.079Z","schemaVersion":2},"datasetVersion":"2026-08-29T17:17:51.833Z"}