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

--- re-building ‘olderFunctionality.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/MigConnectivity.Rcheck/vign_test/MigConnectivity/vignettes/olderFunctionality_files/figure-html/unnamed-chunk-13-1.png
288x288 pixels, 8 bits/pixel, 232 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2252 bytes
Input file size = 3038 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 1897
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 1879
  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 = 1879

Output IDAT size = 1879 bytes (373 bytes decrease)
Output file size = 1957 bytes (1081 bytes = 35.58% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/MigConnectivity.Rcheck/vign_test/MigConnectivity/vignettes/olderFunctionality_files/figure-html/unnamed-chunk-15-1.png
288x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 4898 bytes
Input file size = 5756 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 4351
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 4199
  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 = 4199

Output IDAT size = 4199 bytes (699 bytes decrease)
Output file size = 4277 bytes (1479 bytes = 25.69% decrease)


Quitting from lines 574-596 [unnamed-chunk-21] (olderFunctionality.Rmd)
Error: processing vignette 'olderFunctionality.Rmd' failed with diagnostics:
there is no package called 'maps'
--- failed re-building ‘olderFunctionality.Rmd’

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

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

Error: Vignette re-building failed.
Execution halted