* using log directory 'd:/RCompile/CRANincoming/R-devel/fru.Rcheck'
* using R Under development (unstable) (2026-03-20 r89667 ucrt)
* using platform: x86_64-w64-mingw32
* R was compiled by
    gcc.exe (GCC) 14.3.0
    GNU Fortran (GCC) 14.3.0
* running under: Windows Server 2022 x64 (build 20348)
* using session charset: UTF-8
* current time: 2026-03-21 22:15:28 UTC
* checking for file 'fru/DESCRIPTION' ... OK
* this is package 'fru' version '0.0.4'
* package encoding: UTF-8
* checking CRAN incoming feasibility ... OK
* 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 serialization versions ... OK
* checking whether package 'fru' can be installed ... ERROR
Installation failed.
See 'd:/RCompile/CRANincoming/R-devel/fru.Rcheck/00install.out' for details.
* DONE
Status: 1 ERROR