Error(s) in re-building vignettes:
  ...
--- re-building ‘rlmer.Rnw’ using Sweave
Loading required package: robustlmm
Loading required package: lme4
Loading required package: Matrix
Loading required namespace: cli
Loading required namespace: emmeans
Loading required namespace: coda
Loading required namespace: multcomp
Warning in eval(expr, .GlobalEnv) :
  Current dir: /home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/robustlmm/ has contents: CITATION, DESCRIPTION, INDEX, Meta, NAMESPACE, R, doc, help, html, libs, simulationStudy
Warning in eval(expr, .GlobalEnv) :
  doc dir: /home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/robustlmm/doc has contents: Penicillin.R, ggplot.theme.R, index.html, plots.R, rlmer.R, rlmer.Rnw, rlmer.pdf, simulationStudies.R, simulationStudies.Rnw, simulationStudies.pdf, sleepstudy.R
Warning in eval(expr, .GlobalEnv) :
  Filename: /home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/robustlmm/doc/Penicillin.R
Loading required package: ggplot2
Loading required namespace: dplyr
Warning in compare(fmUncontam, fm, rfm, rfm2, rfm3, show.rho.functions = FALSE) :
  Comparison for objects not fitted to the same dataset
Loading required package: reshape2
--- finished re-building ‘rlmer.Rnw’

--- re-building ‘simulationStudies.Rnw’ using Sweave
Loading required package: ggplot2
Loading required namespace: cli
Loading required namespace: dplyr
Loading required package: robustlmm
Loading required package: lme4
Loading required package: Matrix
Loading required namespace: emmeans
Loading required namespace: coda
Loading required namespace: multcomp
Warning: Removed 75 rows containing missing values (`geom_line()`).
Warning: Removed 2 rows containing missing values (`geom_hline()`).
Warning: Removed 2 rows containing missing values (`geom_hline()`).

Error: processing vignette ‘simulationStudies.Rnw’ failed with diagnostics:
 chunk 24 (label = source-robustness-diagonal-code) 
Error in loadNamespace(x) : there is no package called ‘ggh4x’

--- failed re-building ‘simulationStudies.Rnw’

SUMMARY: processing the following file failed:
  ‘simulationStudies.Rnw’

Error: Vignette re-building failed.
Execution halted