* using log directory ‘/Volumes/Builds/packages/big-sur-arm64/results/4.3/HCD.Rcheck’
* using R version 4.3.3 (2024-02-29)
* using platform: aarch64-apple-darwin20 (64-bit)
* R was compiled by
    Apple clang version 14.0.0 (clang-1400.0.29.202)
    GNU Fortran (GCC) 12.2.0
* running under: macOS Ventura 13.4
* using session charset: UTF-8
* checking for file ‘HCD/DESCRIPTION’ ... OK
* checking extension type ... Package
* this is package ‘HCD’ version ‘1.0’
* 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 whether package ‘HCD’ can be installed ... [6s/7s] OK
See 'https://www.r-project.org/nosvn/R.check/r-oldrel-macos-arm64/HCD-00install.html' for details.
* checking installed package size ... OK
* checking package 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 ... [2s/2s] OK
* checking whether the package can be loaded with stated dependencies ... [1s/2s] OK
* checking whether the package can be unloaded cleanly ... [1s/2s] OK
* checking whether the namespace can be loaded with stated dependencies ... [1s/1s] OK
* checking whether the namespace can be unloaded cleanly ... [2s/2s] OK
* checking loading without being on the library search path ... [1s/1s] 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 ... [4s/4s] OK
* checking Rd files ... [0s/0s] OK
* checking Rd metadata ... 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 examples ... [2s/2s] ERROR
Running examples in ‘HCD-Ex.R’ failed
The error most likely occurred in:

> ### Name: HCD
> ### Title: hierarchical community detection with recursive spectral methods
> ### Aliases: HCD
> ### Keywords: HCD BTSBM
> 
> ### ** Examples
> 
> dt <- BTSBM(n=1600,d=4,a.seq=0.2^seq(0,4),lambda=50)
> A <- dt$A.list[[1]]
> # you can try various versions of the algorithm as below: the Fix is fastest and ECV is slowest.
> system.time(HCD.result <- HCD(A,method="SC",stopping="Fix",D=4))
Begin clustering....
Error in irlba(f, nu = 2, nv = 2) : 
  function 'as_cholmod_sparse' not provided by package 'Matrix'
Calls: system.time -> HCD -> break.cl.sp -> irlba
Timing stopped at: 0.009 0.001 0.01
Execution halted
* checking PDF version of manual ... [4s/4s] OK
* DONE
Status: 1 ERROR
* using check arguments '--no-clean-on-error '

* elapsed time (check, wall clock): 0:53