* using log directory ‘/srv/hornik/tmp/CRAN_pretest/gamm4.Rcheck’
* using R Under development (unstable) (2025-03-31 r88080)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 19.1.7 (1+b1)
    Debian flang-new version 19.1.7 (1+b1)
* running under: Debian GNU/Linux trixie/sid
* using session charset: UTF-8
* checking for file ‘gamm4/DESCRIPTION’ ... OK
* this is package ‘gamm4’ version ‘0.2-7’
* checking CRAN incoming feasibility ... [4s/4s] OK
* checking package namespace information ... OK
* checking package dependencies ... ERROR
Package required and available but unsuitable version: ‘mgcv’

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