Error(s) in re-building vignettes:
  ...
--- re-building ‘climate_data.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/ColOpenData.Rcheck/vign_test/ColOpenData/vignettes/climate_data_files/figure-html/plot temperatures stations-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 18796 bytes
Input file size = 18898 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 16498
  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 = 16498

Output IDAT size = 16498 bytes (2298 bytes decrease)
Output file size = 16576 bytes (2322 bytes = 12.29% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/ColOpenData.Rcheck/vign_test/ColOpenData/vignettes/climate_data_files/figure-html/plot monthly-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 25267 bytes
Input file size = 25381 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 21712
  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 = 21712

Output IDAT size = 21712 bytes (3555 bytes decrease)
Output file size = 21790 bytes (3591 bytes = 14.15% decrease)

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

--- re-building ‘demographic_data.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/ColOpenData.Rcheck/vign_test/ColOpenData/vignettes/demographic_data_files/figure-html/plot wss-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 36898 bytes
Input file size = 37024 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 24022
  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 = 24022

Output IDAT size = 24022 bytes (12876 bytes decrease)
Output file size = 24100 bytes (12924 bytes = 34.91% decrease)

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

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

--- re-building ‘geospatial_data.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/ColOpenData.Rcheck/vign_test/ColOpenData/vignettes/geospatial_data_files/figure-html/ggplot2-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 10467 bytes
Input file size = 10557 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8369
  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 = 8369

Output IDAT size = 8369 bytes (2098 bytes decrease)
Output file size = 8447 bytes (2110 bytes = 19.99% decrease)

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

--- re-building ‘merge_geo_demographic.Rmd’ using rmarkdown

Quitting from lines 56-59 [data] (merge_geo_demographic.Rmd)
Error: processing vignette 'merge_geo_demographic.Rmd' failed with diagnostics:
cannot read from connection
--- failed re-building ‘merge_geo_demographic.Rmd’

--- re-building ‘population_projections.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/ColOpenData.Rcheck/vign_test/ColOpenData/vignettes/population_projections_files/figure-html/plot population-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 18728 bytes
Input file size = 18830 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 14254
  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 = 14254

Output IDAT size = 14254 bytes (4474 bytes decrease)
Output file size = 14332 bytes (4498 bytes = 23.89% decrease)

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

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

Error: Vignette re-building failed.
Execution halted