Error(s) in re-building vignettes:
--- re-building ‘introduction.Rmd’ using rmarkdown
** Processing: /data/gannet/ripley/R/packages/tests-devel/GeoTox.Rcheck/vign_test/GeoTox/vignettes/introduction_files/figure-html/unnamed-chunk-3-1.png
672x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 26302 bytes
Input file size = 26416 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 20429
  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 = 20429

Output IDAT size = 20429 bytes (5873 bytes decrease)
Output file size = 20507 bytes (5909 bytes = 22.37% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-devel/GeoTox.Rcheck/vign_test/GeoTox/vignettes/introduction_files/figure-html/unnamed-chunk-3-2.png
672x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 30020 bytes
Input file size = 30134 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 25906
  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 = 25906

Output IDAT size = 25906 bytes (4114 bytes decrease)
Output file size = 25984 bytes (4150 bytes = 13.77% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-devel/GeoTox.Rcheck/vign_test/GeoTox/vignettes/introduction_files/figure-html/unnamed-chunk-3-3.png
672x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 37871 bytes
Input file size = 37997 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 31676
  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 = 31676

Output IDAT size = 31676 bytes (6195 bytes decrease)
Output file size = 31754 bytes (6243 bytes = 16.43% decrease)

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

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

Error: Vignette re-building failed.
Execution halted