* using log directory ‘/srv/hornik/tmp/CRAN_pretest/TreeTools.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 ‘TreeTools/DESCRIPTION’ ... OK
* this is package ‘TreeTools’ version ‘1.16.0’
* package encoding: UTF-8
* checking CRAN incoming feasibility ... [6s/9s] 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 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 ‘TreeTools’ can be installed ... [1s/1s] ERROR
Installation failed.
See ‘/srv/hornik/tmp/CRAN_pretest/TreeTools.Rcheck/00install.out’ for details.
* DONE
Status: 1 ERROR