* using log directory ‘/srv/hornik/tmp/CRAN/lme4.Rcheck’
* using R Under development (unstable) (2023-11-01 r85459)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 16.0.6 (16)
    GNU Fortran (Debian 13.2.0-5) 13.2.0
* running under: Debian GNU/Linux trixie/sid
* using session charset: UTF-8
* checking for file ‘lme4/DESCRIPTION’ ... OK
* this is package ‘lme4’ version ‘1.1-35’
* package encoding: UTF-8
* checking CRAN incoming feasibility ... [5s/15s] Note_to_CRAN_maintainers
Maintainer: ‘Ben Bolker <bbolker+lme4@gmail.com>’
* checking package namespace information ... OK
* checking package dependencies ... ERROR
Package required and available but unsuitable version: ‘RcppEigen’

See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.
* DONE
Status: 1 ERROR