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

--- re-building ‘mixed_effect_BN_model.Rmd’ using rmarkdown
** Processing: /data/gannet/ripley/R/packages/tests-devel/abn.Rcheck/vign_test/abn/vignettes/mixed_effect_BN_model_files/figure-html/unnamed-chunk-3-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 10733 bytes
Input file size = 10823 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 8278
  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 = 8278

Output IDAT size = 8278 bytes (2455 bytes decrease)
Output file size = 8356 bytes (2467 bytes = 22.79% decrease)

** Processing: /data/gannet/ripley/R/packages/tests-devel/abn.Rcheck/vign_test/abn/vignettes/mixed_effect_BN_model_files/figure-html/unnamed-chunk-4-1.png
288x288 pixels, 3x8 bits/pixel, RGB
Input IDAT size = 13423 bytes
Input file size = 13513 bytes

Trying:
  zc = 9  zm = 8  zs = 0  f = 0		IDAT size = 9984
  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 = 9984

Output IDAT size = 9984 bytes (3439 bytes decrease)
Output file size = 10062 bytes (3451 bytes = 25.54% decrease)


Quitting from lines 153-159 [unnamed-chunk-5] (mixed_effect_BN_model.Rmd)
Error: processing vignette 'mixed_effect_BN_model.Rmd' failed with diagnostics:
DAG matrix contains trivial cycles (nonzero values on diagonal)
--- failed re-building ‘mixed_effect_BN_model.Rmd’

--- re-building ‘model_specification.Rmd’ using rmarkdown
--- finished re-building ‘model_specification.Rmd’

--- re-building ‘multiprocessing.Rmd’ using rmarkdown
--- finished re-building ‘multiprocessing.Rmd’

--- re-building ‘parameter_learning.Rmd’ using rmarkdown
--- finished re-building ‘parameter_learning.Rmd’

--- re-building ‘quick_start_example.Rmd’ using rmarkdown
--- finished re-building ‘quick_start_example.Rmd’

--- re-building ‘structure_learning.Rmd’ using rmarkdown
--- finished re-building ‘structure_learning.Rmd’

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

Error: Vignette re-building failed.
Execution halted