* using log directory 'd:/Rcompile/CRANpkg/local/4.1/jabr.Rcheck'
* using R Under development (unstable) (2021-03-19 r80100)
* using platform: x86_64-w64-mingw32 (64-bit)
* using session charset: ISO8859-1
* checking for file 'jabr/DESCRIPTION' ... OK
* this is package 'jabr' version '0.1.2'
* package encoding: UTF-8
* checking package namespace information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking if there is a namespace ... OK
* checking for hidden files and directories ... OK
* checking for portable file names ... OK
* checking whether package 'jabr' can be installed ... ERROR
Installation failed.
See  for details.
* DONE
The installation logfile: