Error(s) in re-building vignettes:
--- re-building ‘constraints.Rmd’ using rmarkdown
Loading required package: OpenMx
To take full advantage of multiple cores, use:
  mxOption(key='Number of Threads', value=parallel::detectCores()) #now
  Sys.setenv(OMP_NUM_THREADS=parallel::detectCores()) #before library(OpenMx)
Warning: In model 'sharedModel' Optimizer returned a non-zero status code 6. The model does not satisfy the first-order optimality conditions to the required accuracy, and no improved point for the merit function could be found during the final linesearch (Mx status RED)
Warning: In model 'sharedModel' Optimizer returned a non-zero status code 6. The model does not satisfy the first-order optimality conditions to the required accuracy, and no improved point for the merit function could be found during the final linesearch (Mx status RED)
Warning: In model 'sharedModel' Optimizer returned a non-zero status code 6. The model does not satisfy the first-order optimality conditions to the required accuracy, and no improved point for the merit function could be found during the final linesearch (Mx status RED)
Warning: In model 'sharedModel' Optimizer returned a non-zero status code 6. The model does not satisfy the first-order optimality conditions to the required accuracy, and no improved point for the merit function could be found during the final linesearch (Mx status RED)
Loading required package: ggplot2
--- finished re-building ‘constraints.Rmd’

sh: line 1: 3063958 Floating point exception(core dumped) R_LIBS=/tmp/Rtmp61H0XW/RLIBS_2d9a293e9e45a6 R_ENVIRON_USER='' R_LIBS_USER='' R_LIBS_SITE='no_such_dir' '/data/gannet/ripley/R/R-clang/bin/R' --vanilla --no-echo > '/tmp/Rtmp61H0XW/working_dir/RtmpbBYkpD/file2ea6c676773fcb' 2>&1 < '/tmp/Rtmp61H0XW/working_dir/RtmpbBYkpD/file2ea6c65bc70cd7'
--- re-building ‘forests.Rmd’ using rmarkdown
--- re-building ‘getting-started.Rmd’ using rmarkdown
--- finished re-building ‘getting-started.Rmd’

--- re-building ‘score-based-tests.Rmd’ using rmarkdown
--- finished re-building ‘score-based-tests.Rmd’

--- re-building ‘semforest-focus.Rmd’ using rmarkdown
--- finished re-building ‘semforest-focus.Rmd’

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

Error: Vignette re-building failed.
Execution halted