Error(s) in re-building vignettes:
  ...
--- re-building ‘Example_abc.Rmd’ using rmarkdown

Quitting from lines 13-23 [setup] (Example_abc.Rmd)
Error: processing vignette 'Example_abc.Rmd' failed with diagnostics:
there is no package called 'abcrf'
--- failed re-building ‘Example_abc.Rmd’

--- re-building ‘Example_data.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/treestats.Rcheck/vign_test/treestats/vignettes/Example_data_files/figure-html/plot_size-1.png
576x576 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 7493 bytes
Input file size = 8351 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6585
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 6580
  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 = 1  f = 0		IDAT size = 6580

Output IDAT size = 6580 bytes (913 bytes decrease)
Output file size = 6658 bytes (1693 bytes = 20.27% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/treestats.Rcheck/vign_test/treestats/vignettes/Example_data_files/figure-html/corr-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 59847 bytes
Input file size = 60009 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 43556
  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 = 43556

Output IDAT size = 43556 bytes (16291 bytes decrease)
Output file size = 43634 bytes (16375 bytes = 27.29% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/treestats.Rcheck/vign_test/treestats/vignettes/Example_data_files/figure-html/plot with tree size-1.png
576x576 pixels, 8 bits/pixel, 254 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 12173 bytes
Input file size = 13037 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 10649
  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 = 10649

Output IDAT size = 10649 bytes (1524 bytes decrease)
Output file size = 10727 bytes (2310 bytes = 17.72% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/treestats.Rcheck/vign_test/treestats/vignettes/Example_data_files/figure-html/correct_corr-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 66487 bytes
Input file size = 66661 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 47608
  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 = 47608

Output IDAT size = 47608 bytes (18879 bytes decrease)
Output file size = 47686 bytes (18975 bytes = 28.46% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/treestats.Rcheck/vign_test/treestats/vignettes/Example_data_files/figure-html/nicer plot-1.png
576x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 246539 bytes
Input file size = 246977 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 185946
  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 = 185946

Output IDAT size = 185946 bytes (60593 bytes decrease)
Output file size = 186024 bytes (60953 bytes = 24.68% decrease)

--- finished re-building ‘Example_data.Rmd’

--- re-building ‘Getting_started.Rmd’ using rmarkdown
--- finished re-building ‘Getting_started.Rmd’

--- re-building ‘Speed_improvement.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/treestats.Rcheck/vign_test/treestats/vignettes/Speed_improvement_files/figure-html/unnamed-chunk-2-1.png
576x576 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 11067 bytes
Input file size = 11937 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 10303
  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 = 10303

Output IDAT size = 10303 bytes (764 bytes decrease)
Output file size = 10381 bytes (1556 bytes = 13.04% decrease)

--- finished re-building ‘Speed_improvement.Rmd’

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

Error: Vignette re-building failed.
Execution halted