* using log directory ‘/srv/hornik/tmp/CRAN/tidyfst.Rcheck’
* using R Under development (unstable) (2023-07-16 r84696)
* using platform: x86_64-pc-linux-gnu
* R was compiled by
    Debian clang version 16.0.6 (3)
    GNU Fortran (Debian 12.3.0-5) 12.3.0
* running under: Debian GNU/Linux trixie/sid
* using session charset: UTF-8
* checking for file ‘tidyfst/DESCRIPTION’ ... OK
* this is package ‘tidyfst’ version ‘1.7.7’
* package encoding: UTF-8
* checking CRAN incoming feasibility ... [4s/6s] NOTE
Maintainer: ‘Tian-Yuan Huang <huang.tian-yuan@qq.com>’

Package CITATION file contains call(s) to old-style citEntry().  Please
use bibentry() instead.
* 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 ‘tidyfst’ can be installed ... [3s/3s] OK
* checking package directory ... OK
* checking for future file timestamps ... OK
* checking ‘build’ directory ... OK
* checking DESCRIPTION meta-information ... OK
* checking top-level files ... OK
* checking for left-over files ... OK
* checking index information ... OK
* checking package subdirectories ... OK
* checking R files for non-ASCII characters ... OK
* checking R files for syntax errors ... OK
* checking whether the package can be loaded ... [0s/0s] OK
* checking whether the package can be loaded with stated dependencies ... [0s/0s] WARNING
Thank you for using tidyfst!
To acknowledge our work, please cite the package:
Error: package or namespace load failed for ‘tidyfst’:
 .onAttach failed in attachNamespace() for ‘tidyfst’, details:
  call: citation("tidyfst")
  error: could not find function "citation"
Execution halted

It looks like this package (or one of its dependent packages) has an
unstated dependence on a standard package.  All dependencies must be
declared in DESCRIPTION.
See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.
* checking whether the package can be unloaded cleanly ... [0s/0s] WARNING
Error: package or namespace load failed for ‘tidyfst’:
 .onAttach failed in attachNamespace() for ‘tidyfst’, details:
  call: citation("tidyfst")
  error: could not find function "citation"
Execution halted
* checking whether the namespace can be loaded with stated dependencies ... [0s/0s] OK
* checking whether the namespace can be unloaded cleanly ... [0s/0s] OK
* checking loading without being on the library search path ... [0s/0s] OK
* checking startup messages can be suppressed ... [0s/0s] NOTE
Thank you for using tidyfst!
To acknowledge our work, please cite the package:

It looks like this package (or a package it requires) has a startup
message which cannot be suppressed: see ?packageStartupMessage.
* checking use of S3 registration ... OK
* checking dependencies in R code ... OK
* checking S3 generic/method consistency ... OK
* checking replacement functions ... OK
* checking foreign function calls ... OK
* checking R code for possible problems ... [5s/5s] NOTE
File ‘tidyfst/R/on_attach.R’:
  .onAttach calls:
    message("Thank you for using tidyfst!")
    message("To acknowledge our work, please cite the package:")

Package startup functions should use ‘packageStartupMessage’ to
  generate messages.
See section ‘Good practice’ in ‘?.onAttach’.

.onAttach: no visible global function definition for ‘citation’
Undefined global functions or variables:
  citation
Consider adding
  importFrom("utils", "citation")
to your NAMESPACE file.
* checking Rd files ... [0s/0s] OK
* checking Rd metadata ... OK
* checking Rd line widths ... OK
* checking Rd cross-references ... OK
* checking for missing documentation entries ... OK
* checking for code/documentation mismatches ... OK
* checking Rd \usage sections ... OK
* checking Rd contents ... OK
* checking for unstated dependencies in examples ... OK
* checking installed files from ‘inst/doc’ ... OK
* checking files in ‘vignettes’ ... OK
* checking examples ... [16s/5s] OK
* checking for unstated dependencies in ‘tests’ ... OK
* checking tests ... [8s/2s] OK
  Running ‘testthat.R’ [8s/2s]
Running R code in ‘testthat.R’ had CPU time 4.8 times elapsed time
* checking for unstated dependencies in vignettes ... OK
* checking package vignettes in ‘inst/doc’ ... OK
* checking re-building of vignette outputs ... [81s/21s] OK
Re-building vignettes had CPU time 3.9 times elapsed time
* checking PDF version of manual ... [4s/4s] OK
* checking HTML version of manual ... [1s/1s] OK
* checking for non-standard things in the check directory ... OK
* checking for detritus in the temp directory ... OK
* DONE
Status: 2 WARNINGs, 3 NOTEs