Found the following significant warnings:
  Rd warning: compare.Rd:39: missing link ‘xtable’
  Rd warning: compare.Rd:40: missing link ‘xtable’
  Rd warning: compare.Rd:52: missing link ‘xtable’
  Rd warning: compare.Rd:54: missing link ‘xtable’
  Rd warning: compare.Rd:56: missing link ‘xtable’
  Rd warning: compare.Rd:58: missing link ‘xtable’
  Rd warning: compare.Rd:81: missing link ‘xtable’
  Rd warning: compare.Rd:81: missing link ‘print.xtable’
  Rd warning: compare.Rd:97: missing link ‘xtable’
  Rd warning: compare.Rd:99: missing link ‘print.xtable’
  Rd warning: fitDatasets.Rd:153: missing link ‘lmer’
  Rd warning: fitDatasets.Rd:156: missing link ‘lmer’
  Rd warning: fitDatasets.Rd:160: missing link ‘lmer’
  Rd warning: getME.Rd:147: missing link ‘merMod-class’
  Rd warning: getME.Rd:102: missing link ‘glmer’
  Rd warning: getME.Rd:103: missing link ‘glmerControl’
  Rd warning: prepareMixedEffectDataset.Rd:54: missing link ‘lmer’
  Rd warning: prepareMixedEffectDataset.Rd:18: missing link ‘lmer’
  Rd warning: prepareMixedEffectDataset.Rd:20: missing link ‘lmer’
  Rd warning: prepareMixedEffectDataset.Rd:22: missing link ‘lmer’
  Rd warning: prepareMixedEffectDataset.Rd:26: missing link ‘lmer’
  Rd warning: prepareMixedEffectDataset.Rd:30: missing link ‘lmer’
  Rd warning: prepareMixedEffectDataset.Rd:34: missing link ‘lmer’
  Rd warning: processFit.Rd:213: missing link ‘lmer’
  Rd warning: processFit.Rd:194: missing link ‘lmer’
  Rd warning: rlmer.Rd:222: missing link ‘lmer’
  Rd warning: rlmerMod-class.Rd:54: missing link ‘lmer’
  Rd warning: rlmerMod-class.Rd:65: missing link ‘fixef.merMod’
  Rd warning: rlmerMod-class.Rd:68: missing link ‘isGLMM’
  Rd warning: rlmerMod-class.Rd:69: missing link ‘isLMM’
  Rd warning: rlmerMod-class.Rd:70: missing link ‘isNLMM’
  Rd warning: rlmerMod-class.Rd:71: missing link ‘isREML’
  Rd warning: rlmerMod-class.Rd:77: missing link ‘predict.merMod’
  Rd warning: rlmerMod-class.Rd:78: missing link ‘ranef.merMod’
  Rd warning: rlmerMod-class.Rd:84: missing link ‘VarCorr.merMod’
  Rd warning: rlmerMod-class.Rd:111: missing link ‘merMod’
  Rd warning: robustlmm-package.Rd:11: missing link ‘lmer’
  Rd warning: robustlmm-package.Rd:12: missing link ‘lme4’
  Rd warning: robustlmm-package.Rd:15: missing link ‘lmer’
  Rd warning: robustlmm-package.Rd:28: missing link ‘lme4’
See ‘/home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/robustlmm.Rcheck/00install.out’ for details.
* used C compiler: ‘gcc-14 (Debian 14.2.0-19) 14.2.0’
* used C++ compiler: ‘g++-14 (Debian 14.2.0-19) 14.2.0’