Error(s) in re-building vignettes:
  ...
--- re-building ‘how-does-EP-work.Rmd’ using rmarkdown
--- finished re-building ‘how-does-EP-work.Rmd’

--- re-building ‘views.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ffp.Rcheck/vign_test/ffp/vignettes/views_files/figure-html/unnamed-chunk-8-1.png
672x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 58699 bytes
Input file size = 58861 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0
  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		IDAT size = 57036
  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 = 5		IDAT size = 57036

Output IDAT size = 57036 bytes (1663 bytes decrease)
Output file size = 57114 bytes (1747 bytes = 2.97% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ffp.Rcheck/vign_test/ffp/vignettes/views_files/figure-html/unnamed-chunk-12-1.png
672x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 52359 bytes
Input file size = 52509 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0
  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		IDAT size = 51053
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 50709
  zc = 1  zm = 8  zs = 2  f = 5
  zc = 9  zm = 8  zs = 3  f = 5
                               
Selecting parameters:
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 50709

Output IDAT size = 50709 bytes (1650 bytes decrease)
Output file size = 50787 bytes (1722 bytes = 3.28% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ffp.Rcheck/vign_test/ffp/vignettes/views_files/figure-html/unnamed-chunk-17-1.png
672x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 37270 bytes
Input file size = 37396 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0
  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		IDAT size = 36108
  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 = 5		IDAT size = 36108

Output IDAT size = 36108 bytes (1162 bytes decrease)
Output file size = 36186 bytes (1210 bytes = 3.24% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ffp.Rcheck/vign_test/ffp/vignettes/views_files/figure-html/unnamed-chunk-21-1.png
672x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 59060 bytes
Input file size = 59222 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0
  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		IDAT size = 57151
  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 = 5		IDAT size = 57151

Output IDAT size = 57151 bytes (1909 bytes decrease)
Output file size = 57229 bytes (1993 bytes = 3.37% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ffp.Rcheck/vign_test/ffp/vignettes/views_files/figure-html/unnamed-chunk-27-1.png
672x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 42615 bytes
Input file size = 42753 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0
  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		IDAT size = 41228
  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 = 5		IDAT size = 41228

Output IDAT size = 41228 bytes (1387 bytes decrease)
Output file size = 41306 bytes (1447 bytes = 3.38% decrease)


Quitting from lines 474-491 [unnamed-chunk-29] (views.Rmd)
Error: processing vignette 'views.Rmd' failed with diagnostics:
there is no package called 'copula'
--- failed re-building ‘views.Rmd’

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

Error: Vignette re-building failed.
Execution halted