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

Quitting from lines 22-27 [setup] (ClustAssess.Rmd)
Error: processing vignette 'ClustAssess.Rmd' failed with diagnostics:
there is no package called 'Seurat'
--- failed re-building ‘ClustAssess.Rmd’

--- re-building ‘comparing-soft-and-hierarchical.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/ClustAssess.Rcheck/vign_test/ClustAssess/vignettes/comparing-soft-and-hierarchical_files/figure-html/setup-1.png
672x432 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 32299 bytes
Input file size = 32413 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 25143
  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 = 25143

Output IDAT size = 25143 bytes (7156 bytes decrease)
Output file size = 25221 bytes (7192 bytes = 22.19% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/ClustAssess.Rcheck/vign_test/ClustAssess/vignettes/comparing-soft-and-hierarchical_files/figure-html/clustering-1.png
672x432 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 30699 bytes
Input file size = 30813 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 24377
  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 = 24377

Output IDAT size = 24377 bytes (6322 bytes decrease)
Output file size = 24455 bytes (6358 bytes = 20.63% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/ClustAssess.Rcheck/vign_test/ClustAssess/vignettes/comparing-soft-and-hierarchical_files/figure-html/clustering-2.png
672x432 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 31835 bytes
Input file size = 31949 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 25281
  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 = 25281

Output IDAT size = 25281 bytes (6554 bytes decrease)
Output file size = 25359 bytes (6590 bytes = 20.63% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/ClustAssess.Rcheck/vign_test/ClustAssess/vignettes/comparing-soft-and-hierarchical_files/figure-html/clustering-3.png
672x432 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 21677 bytes
Input file size = 21779 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 17597
  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 = 17597

Output IDAT size = 17597 bytes (4080 bytes decrease)
Output file size = 17675 bytes (4104 bytes = 18.84% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/ClustAssess.Rcheck/vign_test/ClustAssess/vignettes/comparing-soft-and-hierarchical_files/figure-html/ecs-1.png
672x432 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 34915 bytes
Input file size = 35041 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 27814
  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 = 27814

Output IDAT size = 27814 bytes (7101 bytes decrease)
Output file size = 27892 bytes (7149 bytes = 20.40% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/ClustAssess.Rcheck/vign_test/ClustAssess/vignettes/comparing-soft-and-hierarchical_files/figure-html/ecs-2.png
672x432 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 34979 bytes
Input file size = 35105 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 28675
  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 = 28675

Output IDAT size = 28675 bytes (6304 bytes decrease)
Output file size = 28753 bytes (6352 bytes = 18.09% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/ClustAssess.Rcheck/vign_test/ClustAssess/vignettes/comparing-soft-and-hierarchical_files/figure-html/ecs-3.png
672x432 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 34140 bytes
Input file size = 34266 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 27855
  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 = 27855

Output IDAT size = 27855 bytes (6285 bytes decrease)
Output file size = 27933 bytes (6333 bytes = 18.48% decrease)

--- finished re-building ‘comparing-soft-and-hierarchical.Rmd’

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

Error: Vignette re-building failed.
Execution halted