 surely does not exist",    isDir:          false,    osStatErr:      os.ErrNotExist,    logContainsSeq: []string{},    want:           false,   },   {    name:      "ambiguous, log and default to false",    isDir:     false,    osStatErr: errors.Errorf("00000"),    logContainsSeq: []string{     "Existence check of path 'x' returned error '00000', defaulting to false",    },    want: false,   },  }   for _, tc := range cases {   buf = bytes.Buffer{}   osStat = func(filename string) (os.FileInfo, error) {    return &mockFileInfo{tc.isDir, nil}, tc.osStatErr   }   got := 