* using log directory ‘/srv/hornik/tmp/CRAN_pretest/OptOTrials.Rcheck’
* using R Under development (unstable) (2025-08-21 r88668)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 19.1.7 (3+b1)
    Debian flang-new version 19.1.7 (3+b1)
* running under: Debian GNU/Linux forky/sid
* using session charset: UTF-8
* checking for file ‘OptOTrials/DESCRIPTION’ ... OK
* checking extension type ... ERROR
Extensions with Type ‘R Package’ cannot be checked.
* DONE
Status: 1 ERROR