* installing *source* package ‘shinytest’ ...
** using staged installation
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for ‘shinytest’:
 .onLoad failed in loadNamespace() for 'shinytest', details:
  call: .makeMessage(..., domain = domain, appendLF = appendLF)
  error: argument is missing, with no default
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/srv/hornik/tmp/CRAN/shinytest.Rcheck/shinytest’