• using R Under development (unstable) (2022-08-14 r82716)
• using platform: x86_64-pc-linux-gnu (64-bit)
• using session charset: UTF-8
• checking for file ‘happign/DESCRIPTION’ ... OK
• this is package ‘happign’ version ‘0.1.5’
• 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 executable files ... OK
• checking for hidden files and directories ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking serialization versions ... OK
• checking whether package ‘happign’ can be installed ... ERROR
  Installation failed.
  See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/happign.Rcheck/00install.out’ for details.
• DONE
  See https://www.r-project.org/nosvn/R.check/r-devel-linux-x86_64-debian-gcc/happign-00install.html for details.