Error(s) in re-building vignettes:
  ...
--- re-building ‘correlation.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/lava.Rcheck/vign_test/lava/vignettes/correlation_files/figure-html/unnamed-chunk-2-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 8550 bytes
Input file size = 8640 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 6469
  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 = 6469

Output IDAT size = 6469 bytes (2081 bytes decrease)
Output file size = 6547 bytes (2093 bytes = 24.22% decrease)

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

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

Quitting from lines 139-146 [simulate] (influencefunction.Rmd)
Error: processing vignette 'influencefunction.Rmd' failed with diagnostics:
there is no package called 'mets'
--- failed re-building ‘influencefunction.Rmd’

--- re-building ‘nonlinear.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/lava.Rcheck/vign_test/lava/vignettes/nonlinear_files/figure-html/unnamed-chunk-2-1.png
576x384 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 23043 bytes
Input file size = 23145 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 18244
  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 = 18244

Output IDAT size = 18244 bytes (4799 bytes decrease)
Output file size = 18322 bytes (4823 bytes = 20.84% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/lava.Rcheck/vign_test/lava/vignettes/nonlinear_files/figure-html/figpred2-1.png
576x384 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 17181 bytes
Input file size = 17283 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 12662
  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 = 12662

Output IDAT size = 12662 bytes (4519 bytes decrease)
Output file size = 12740 bytes (4543 bytes = 26.29% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/lava.Rcheck/vign_test/lava/vignettes/nonlinear_files/figure-html/multifit-1.png
576x384 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 29285 bytes
Input file size = 29399 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 22462
  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 = 22462

Output IDAT size = 22462 bytes (6823 bytes decrease)
Output file size = 22540 bytes (6859 bytes = 23.33% decrease)

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

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

Error: Vignette re-building failed.
Execution halted