* using log directory ‘/srv/hornik/tmp/CRAN_pretest/tramnet.Rcheck’
* using R Under development (unstable) (2026-03-03 r89530)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 21.1.8 (3+b1)
    Debian flang version 21.1.8 (3+b1)
* running under: Debian GNU/Linux forky/sid
* using session charset: UTF-8
* current time: 2026-03-04 10:01:09 UTC
* checking for file ‘tramnet/DESCRIPTION’ ... OK
* this is package ‘tramnet’ version ‘0.0-99’
* package encoding: UTF-8
* checking CRAN incoming feasibility ... [4s/7s] NOTE
Maintainer: ‘Lucas Kook <lucasheinrich.kook@gmail.com>’

Found the following (possibly) invalid URLs:
  URL: http://arxiv.org/abs/1703.03373 (moved to https://arxiv.org/abs/1703.03373)
    From: inst/doc/tramnet.pdf
    Status: 301
    Message: Moved Permanently
For content that is 'Moved Permanently', please change http to https,
add trailing slashes, or replace the old by the new URL.
* checking package namespace information ... OK
* checking package dependencies ... ERROR
Package required and available but unsuitable version: ‘CVXR’

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