Error(s) in re-building vignettes:
  ...
--- re-building ‘glmtree.Rmd’ using rmarkdown
** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/glmtree.Rcheck/vign_test/glmtree/vignettes/glmtree_files/figure-html/segmentation_simulation1-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 31326 bytes
Input file size = 31440 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 26284
  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 = 26284

Output IDAT size = 26284 bytes (5042 bytes decrease)
Output file size = 26362 bytes (5078 bytes = 16.15% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/glmtree.Rcheck/vign_test/glmtree/vignettes/glmtree_files/figure-html/segmentation_mob1-1.png
288x288 pixels, 8 bits/pixel, 241 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 2494 bytes
Input file size = 3307 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 2147
  zc = 9  zm = 8  zs = 1  f = 0		IDAT size = 2129
  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 = 2129

Output IDAT size = 2129 bytes (365 bytes decrease)
Output file size = 2207 bytes (1100 bytes = 33.26% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/glmtree.Rcheck/vign_test/glmtree/vignettes/glmtree_files/figure-html/segmentation_glmtree1-1.png
288x288 pixels, 8 bits/pixel, 255 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 5651 bytes
Input file size = 6506 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 4954
  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 = 4954

Output IDAT size = 4954 bytes (697 bytes decrease)
Output file size = 5032 bytes (1474 bytes = 22.66% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/glmtree.Rcheck/vign_test/glmtree/vignettes/glmtree_files/figure-html/segmentation_glmtree1-2.png
288x288 pixels, 8 bits/pixel, 256 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 9474 bytes
Input file size = 10344 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8783
  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 = 8783

Output IDAT size = 8783 bytes (691 bytes decrease)
Output file size = 8861 bytes (1483 bytes = 14.34% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/glmtree.Rcheck/vign_test/glmtree/vignettes/glmtree_files/figure-html/segmentation_glmtree1-3.png
288x288 pixels, 8 bits/pixel, 255 colors in palette
Reducing image to 8 bits/pixel, grayscale
Input IDAT size = 3708 bytes
Input file size = 4563 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 3246
  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 = 3246

Output IDAT size = 3246 bytes (462 bytes decrease)
Output file size = 3324 bytes (1239 bytes = 27.15% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/glmtree.Rcheck/vign_test/glmtree/vignettes/glmtree_files/figure-html/segmentation_simulation2-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 32414 bytes
Input file size = 32528 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 26603
  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 = 26603

Output IDAT size = 26603 bytes (5811 bytes decrease)
Output file size = 26681 bytes (5847 bytes = 17.98% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/glmtree.Rcheck/vign_test/glmtree/vignettes/glmtree_files/figure-html/segmentation_simulation2-2.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 31337 bytes
Input file size = 31451 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 25314
  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 = 25314

Output IDAT size = 25314 bytes (6023 bytes decrease)
Output file size = 25392 bytes (6059 bytes = 19.26% decrease)

** Processing: /home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/glmtree.Rcheck/vign_test/glmtree/vignettes/glmtree_files/figure-html/segmentation_simulation2-3.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 30626 bytes
Input file size = 30740 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 24969
  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 = 24969

Output IDAT size = 24969 bytes (5657 bytes decrease)
Output file size = 25047 bytes (5693 bytes = 18.52% decrease)


Quitting from lines 108-120 [segmentation_pca2] (glmtree.Rmd)
Error: processing vignette 'glmtree.Rmd' failed with diagnostics:
factor x1 has new levels 1
--- failed re-building ‘glmtree.Rmd’

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

Error: Vignette re-building failed.
Execution halted