• using R Under development (unstable) (2026-06-06 r90114)
• using platform: x86_64-pc-linux-gnu
• R was compiled by     gcc-16 (Debian 16.1.0-1) 16.1.0     GNU Fortran (Debian 16.1.0-1) 16.1.0
• running under: Debian GNU/Linux forky/sid
• using session charset: UTF-8 * current time: 2026-06-07 12:17:06 UTC
• checking for file ‘cmfrec/DESCRIPTION’ ... OK
• checking extension type ... Package
• this is package ‘cmfrec’ version ‘3.5.1-3’
• checking CRAN incoming feasibility ... [1s/1s] NOTE Maintainer: ‘David Cortes <david.cortes.rivera@gmail.com>’ The Description field contains   extensions of the original model (Cortes, (2018) <arXiv:1809.00366>)   'implicit features' (Rendle, Zhang, Koren, (2019) <arXiv:1905.01395>), Please refer to arXiv e-prints via their arXiv DOI <doi:10.48550/arXiv.YYMM.NNNNN>.
• 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 ‘cmfrec’ can be installed ... OK See the install log for details.
• used C compiler: ‘gcc-16 (Debian 16.1.0-1) 16.1.0’
• checking package directory ... OK
• checking for future file timestamps ... OK
• checking ‘build’ directory ... OK
• checking DESCRIPTION meta-information ...