Error(s) in re-building vignettes:
  ...
--- re-building ‘consort_diagram.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/consort.Rcheck/vign_test/consort/vignettes/consort_diagram_files/figure-html/single-arms-1.png
576x576 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 18381 bytes
Input file size = 19263 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 16575
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 16450
  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 = 1  f = 0		IDAT size = 16450

Output IDAT size = 16450 bytes (1931 bytes decrease)
Output file size = 16528 bytes (2735 bytes = 14.20% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/consort.Rcheck/vign_test/consort/vignettes/consort_diagram_files/figure-html/multiple-phase-1.png
864x576 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 45855 bytes
Input file size = 45993 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 36803
  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 = 36803

Output IDAT size = 36803 bytes (9052 bytes decrease)
Output file size = 36881 bytes (9112 bytes = 19.81% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/consort.Rcheck/vign_test/consort/vignettes/consort_diagram_files/figure-html/multiple-split-1.png
1152x768 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 60110 bytes
Input file size = 60272 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 48422
  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 = 48422

Output IDAT size = 48422 bytes (11688 bytes decrease)
Output file size = 48500 bytes (11772 bytes = 19.53% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/consort.Rcheck/vign_test/consort/vignettes/consort_diagram_files/figure-html/multiple-split-stack-1.png
1248x960 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 121029 bytes
Input file size = 121275 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 94922
  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 = 94922

Output IDAT size = 94922 bytes (26107 bytes decrease)
Output file size = 95000 bytes (26275 bytes = 21.67% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/consort.Rcheck/vign_test/consort/vignettes/consort_diagram_files/figure-html/providetext1-1.png
672x384 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 38772 bytes
Input file size = 38898 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 31118
  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 = 31118

Output IDAT size = 31118 bytes (7654 bytes decrease)
Output file size = 31196 bytes (7702 bytes = 19.80% decrease)


Quitting from lines 233-246 [providetext2] (consort_diagram.Rmd)
Error: processing vignette 'consort_diagram.Rmd' failed with diagnostics:
package `DiagrammeR` is needed to draw grViz plot.
--- failed re-building ‘consort_diagram.Rmd’

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

Error: Vignette re-building failed.
Execution halted