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

Quitting from lines 34-35 [unnamed-chunk-3] (overview.Rmd)
Error: processing vignette 'overview.Rmd' failed with diagnostics:
there is no package called 'devtools'
--- failed re-building ‘overview.Rmd’

--- re-building ‘tutorial.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/rankrate.Rcheck/vign_test/rankrate/vignettes/tutorial_files/figure-html/unnamed-chunk-4-1.png
900x629 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 26606 bytes
Input file size = 26720 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 23453
  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 = 23453

Output IDAT size = 23453 bytes (3153 bytes decrease)
Output file size = 23531 bytes (3189 bytes = 11.93% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/rankrate.Rcheck/vign_test/rankrate/vignettes/tutorial_files/figure-html/unnamed-chunk-5-1.png
900x629 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 19748 bytes
Input file size = 20630 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 18106
  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 = 18106

Output IDAT size = 18106 bytes (1642 bytes decrease)
Output file size = 18184 bytes (2446 bytes = 11.86% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/rankrate.Rcheck/vign_test/rankrate/vignettes/tutorial_files/figure-html/unnamed-chunk-7-1.png
900x629 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 19515 bytes
Input file size = 20397 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 17195
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 17064
  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 = 17064

Output IDAT size = 17064 bytes (2451 bytes decrease)
Output file size = 17142 bytes (3255 bytes = 15.96% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/rankrate.Rcheck/vign_test/rankrate/vignettes/tutorial_files/figure-html/unnamed-chunk-7-2.png
900x629 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 15987 bytes
Input file size = 16857 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 14307
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 14095
  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 = 14095

Output IDAT size = 14095 bytes (1892 bytes decrease)
Output file size = 14173 bytes (2684 bytes = 15.92% decrease)

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

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

Error: Vignette re-building failed.
Execution halted