Error(s) in re-building vignettes:
  ...
--- re-building ‘womblR-example.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/womblR.Rcheck/vign_test/womblR/vignettes/womblR-example_files/figure-html/unnamed-chunk-4-1.png
528x528 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 20432 bytes
Input file size = 21314 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 18706
  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 = 18706

Output IDAT size = 18706 bytes (1726 bytes decrease)
Output file size = 18784 bytes (2530 bytes = 11.87% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/womblR.Rcheck/vign_test/womblR/vignettes/womblR-example_files/figure-html/unnamed-chunk-9-1.png
528x528 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 24893 bytes
Input file size = 25787 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 23314
  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 = 23314

Output IDAT size = 23314 bytes (1579 bytes decrease)
Output file size = 23392 bytes (2395 bytes = 9.29% decrease)

Warning in file("", "w+b") :
  cannot open file '/home/hornik/tmp/scratch/Rtmp6uv0Jd/Rf35964d3647eeae': No such file or directory

Quitting from lines 165-166 [unnamed-chunk-17] (womblR-example.Rmd)
Error: processing vignette 'womblR-example.Rmd' failed with diagnostics:
cannot open the connection
--- failed re-building ‘womblR-example.Rmd’

SUMMARY: processing the following file failed:
  ‘womblR-example.Rmd’

Error: Vignette re-building failed.
Execution halted