* installing to library ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages’
* installing *source* package ‘tractor.base’ ...
** package ‘tractor.base’ successfully unpacked and MD5 sums checked
** using staged installation
** R
** inst
** byte-compile and prepare package for lazy loading
in method for ‘coerce’ with signature ‘"MriImage","nifti"’: no definition for class “nifti”
in method for ‘coerce’ with signature ‘"nifti","MriImage"’: no definition for class “nifti”
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
** testing if installed package can be loaded from final location
** testing if installed package keeps a record of temporary installation path
* DONE (tractor.base)