Error(s) in re-building vignettes:
  ...
--- re-building ‘ref-icar-vignette.Rmd’ using rmarkdown
Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-1'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-2'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-3'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

** Processing: /home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/ref.ICAR.Rcheck/vign_test/ref.ICAR/vignettes/ref-icar-vignette_files/figure-html/unnamed-chunk-3-1.png
672x528 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 55347 bytes
Input file size = 55497 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 45467
  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 = 45467

Output IDAT size = 45467 bytes (9880 bytes decrease)
Output file size = 45545 bytes (9952 bytes = 17.93% decrease)

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-4'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

** Processing: /home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/ref.ICAR.Rcheck/vign_test/ref.ICAR/vignettes/ref-icar-vignette_files/figure-html/unnamed-chunk-4-1.png
672x528 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 51884 bytes
Input file size = 52034 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 43075
  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 = 43075

Output IDAT size = 43075 bytes (8809 bytes decrease)
Output file size = 43153 bytes (8881 bytes = 17.07% decrease)

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-5'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-6'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-7'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-8'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

** Processing: /home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/ref.ICAR.Rcheck/vign_test/ref.ICAR/vignettes/ref-icar-vignette_files/figure-html/unnamed-chunk-8-1.png
672x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 30587 bytes
Input file size = 31481 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 28564
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 28555
  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 = 25747
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 25165
  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 = 25165

Output IDAT size = 25165 bytes (5422 bytes decrease)
Output file size = 25243 bytes (6238 bytes = 19.82% decrease)

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-9'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-10'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

** Processing: /home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/ref.ICAR.Rcheck/vign_test/ref.ICAR/vignettes/ref-icar-vignette_files/figure-html/unnamed-chunk-10-1.png
672x528 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 52560 bytes
Input file size = 52710 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 43044
  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 = 43044

Output IDAT size = 43044 bytes (9516 bytes decrease)
Output file size = 43122 bytes (9588 bytes = 18.19% decrease)

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-11'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.

** Processing: /home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/ref.ICAR.Rcheck/vign_test/ref.ICAR/vignettes/ref-icar-vignette_files/figure-html/unnamed-chunk-11-1.png
672x480 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 29088 bytes
Input file size = 29982 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 27075
  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 = 24767
  zc = 9  zm = 8  zs = 1  f = 5		IDAT size = 24237
  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 = 24237

Output IDAT size = 24237 bytes (4851 bytes decrease)
Output file size = 24315 bytes (5667 bytes = 18.90% decrease)

Warning in eng_r(options) :
  Failed to tidy R code in chunk 'unnamed-chunk-12'. Reason:
Error : The formatR package is required by the chunk option tidy = TRUE but not installed; tidy = TRUE will be ignored.


Quitting from lines 269-276 [unnamed-chunk-12] (ref-icar-vignette.Rmd)
Error: processing vignette 'ref-icar-vignette.Rmd' failed with diagnostics:
`dsn` must point to a source, not an empty string.
--- failed re-building ‘ref-icar-vignette.Rmd’

SUMMARY: processing the following file failed:
  ‘ref-icar-vignette.Rmd’

Error: Vignette re-building failed.
Execution halted