Error(s) in re-building vignettes:
  ...
--- re-building ‘sparseR.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/sparseR.Rcheck/vign_test/sparseR/vignettes/sparseR_files/figure-html/unnamed-chunk-5-1.png
672x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 32469 bytes
Input file size = 32583 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 25416
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 25416

Output IDAT size = 25416 bytes (7053 bytes decrease)
Output file size = 25494 bytes (7089 bytes = 21.76% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/sparseR.Rcheck/vign_test/sparseR/vignettes/sparseR_files/figure-html/unnamed-chunk-6-1.png
672x480 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 37593 bytes
Input file size = 37719 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 31593
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 31593

Output IDAT size = 31593 bytes (6000 bytes decrease)
Output file size = 31671 bytes (6048 bytes = 16.03% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/sparseR.Rcheck/vign_test/sparseR/vignettes/sparseR_files/figure-html/unnamed-chunk-12-1.png
672x768 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 62265 bytes
Input file size = 62427 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 48406
  zc = 9  zm = 8  zs = 1  f = 0
  zc = 1  zm = 8  zs = 2  f = 0
  zc = 9  zm = 8  zs = 3  f = 0
  zc = 9  zm = 8  zs = 0  f = 5
  zc = 9  zm = 8  zs = 1  f = 5
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 48406

Output IDAT size = 48406 bytes (13859 bytes decrease)
Output file size = 48484 bytes (13943 bytes = 22.33% decrease)


Quitting from sparseR.Rmd:175-179 [unnamed-chunk-16]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `attr(extra_opts$center_fn, "custom") <- TRUE`:
! cannot set attribute on a 'builtin'
---
Backtrace:
    ▆
 1. └─sparseR::sparseR_prep(Sepal.Width ~ ., iris, k = 0, extra_opts = list(center_fn = min))
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'sparseR.Rmd' failed with diagnostics:
cannot set attribute on a 'builtin'
--- failed re-building ‘sparseR.Rmd’

SUMMARY: processing the following file failed:
  ‘sparseR.Rmd’

Error: Vignette re-building failed.
Execution halted