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

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

Quitting from lines 247-254 [unnamed-chunk-5] (faq.Rmd)
Error: processing vignette 'faq.Rmd' failed with diagnostics:
there is no package called 'MatchIt'
--- failed re-building ‘faq.Rmd’

--- re-building ‘longitudinal-treat.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/cobalt.Rcheck/vign_test/cobalt/vignettes/longitudinal-treat_files/figure-html/unnamed-chunk-7-1.png
480x384 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 25910 bytes
Input file size = 26024 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 21155
  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 = 21155

Output IDAT size = 21155 bytes (4755 bytes decrease)
Output file size = 21233 bytes (4791 bytes = 18.41% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/cobalt.Rcheck/vign_test/cobalt/vignettes/longitudinal-treat_files/figure-html/unnamed-chunk-8-1.png
480x384 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 18256 bytes
Input file size = 18358 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 15057
  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 = 15057

Output IDAT size = 15057 bytes (3199 bytes decrease)
Output file size = 15135 bytes (3223 bytes = 17.56% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/cobalt.Rcheck/vign_test/cobalt/vignettes/longitudinal-treat_files/figure-html/unnamed-chunk-9-1.png
480x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 18202 bytes
Input file size = 18304 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 14467
  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 = 14467

Output IDAT size = 14467 bytes (3735 bytes decrease)
Output file size = 14545 bytes (3759 bytes = 20.54% decrease)

** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/cobalt.Rcheck/vign_test/cobalt/vignettes/longitudinal-treat_files/figure-html/unnamed-chunk-10-1.png
480x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 18335 bytes
Input file size = 18437 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 14716
  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 = 14716

Output IDAT size = 14716 bytes (3619 bytes decrease)
Output file size = 14794 bytes (3643 bytes = 19.76% decrease)

--- finished re-building ‘longitudinal-treat.Rmd’

--- re-building ‘love.plot.Rmd’ using rmarkdown
--- finished re-building ‘love.plot.Rmd’

--- re-building ‘optimizing-balance.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-release-gcc/Work/PKGS/cobalt.Rcheck/vign_test/cobalt/vignettes/optimizing-balance_files/figure-html/unnamed-chunk-10-1.png
672x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 6949 bytes
Input file size = 7807 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 5748
  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 = 5748

Output IDAT size = 5748 bytes (1201 bytes decrease)
Output file size = 5826 bytes (1981 bytes = 25.37% decrease)

--- finished re-building ‘optimizing-balance.Rmd’

--- re-building ‘other-packages.Rmd’ using rmarkdown
--- finished re-building ‘other-packages.Rmd’

--- re-building ‘segmented-data.Rmd’ using rmarkdown
--- finished re-building ‘segmented-data.Rmd’

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

Error: Vignette re-building failed.
Execution halted