* installing *source* package ‘notebookutils’ ...
** this is package ‘notebookutils’ version ‘1.5.4’
** using staged installation
** R
Error in parse(...) : 
  /srv/hornik/tmp/CRAN_pretest/notebookutils.Rcheck/00_pkg_src/notebookutils/R/notebook.R:209:53: unexpected symbol
208:                                                     workspaceId = ""
209:                                                     environmentId
                                                         ^
ERROR: unable to collate and parse R files for package ‘notebookutils’
* removing ‘/srv/hornik/tmp/CRAN_pretest/notebookutils.Rcheck/notebookutils’