* using log directory ‘/srv/hornik/tmp/CRAN/DSWE.Rcheck’
* using R Under development (unstable) (2024-02-06 r85870)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 17.0.6 (5)
    Debian flang-new version 17.0.6 (5)
* running under: Debian GNU/Linux trixie/sid
* using session charset: UTF-8
* checking for file ‘DSWE/DESCRIPTION’ ... OK
* this is package ‘DSWE’ version ‘1.8.0’
* package encoding: UTF-8
* checking CRAN incoming feasibility ... [4s/5s] NOTE
Maintainer: ‘Yu Ding <yuding2007@gmail.com>’

Found the following (possibly) invalid DOIs:
  DOI: 1708.06302
    From: man/tempGP.Rd
    Message: Invalid DOI
* checking package namespace information ... OK
* checking package dependencies ... ERROR
Packages required but not available: 'GpGp', 'GPvecchia'

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