* using log directory ‘/srv/hornik/tmp/CRAN/Umatrix.Rcheck’
* using R Under development (unstable) (2024-08-16 r87026)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 18.1.8 (9)
    Debian flang-new version 18.1.8 (9)
* running under: Debian GNU/Linux trixie/sid
* using session charset: UTF-8
* checking for file ‘Umatrix/DESCRIPTION’ ... OK
* checking extension type ... Package
* this is package ‘Umatrix’ version ‘4.0.1’
* checking CRAN incoming feasibility ... [3s/4s] WARNING
Maintainer: ‘Jorn Lotsch <j.lotsch@em.uni-frankfurt.de>’

Strong dependencies not in mainstream repositories:
  dbt.DataIO

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = "Florian",
                      family = "Lerch",
                      role = c("aut", "cre")),
               person(given = "Michael",
                      family = "Thrun",
                      role = "aut"),
               person(given = "Felix",
                      family = "Pape",
                      role = "ctb"),
               person(given = "Raphael",
                      family = "Paebst",
                      role = "ctb"),
               person(given = "Jorn",
                      family = "Lotsch",
                      role = c("aut", "cre"),
                      email = "j.lotsch@em.uni-frankfurt.de"),
               person(given = "Alfred",
                      family = "Ultsch",
                      role = "aut"))
as necessary.

Found the following \keyword or \concept entries
which likely give several index terms:
  File ‘Hepta.Rd’:
    \keyword{datasets,Hepta,FCPS}
* checking package namespace information ... OK
* checking package dependencies ... ERROR
Package required but not available: ‘dbt.DataIO’

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