Error(s) in re-building vignettes:
  ...
--- re-building ‘ciTools-binomial-vignette.Rmd’ using rmarkdown
── Attaching packages ────────────────────────────────── tidyverse 1.2.1 ──
✔ ggplot2 3.1.0       ✔ purrr   0.3.2  
✔ tibble  2.1.1       ✔ dplyr   0.8.0.1
✔ tidyr   0.8.3       ✔ stringr 1.4.0  
✔ readr   1.3.1       ✔ forcats 0.4.0  
── Conflicts ───────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
ciTools version 0.5.1 (C) Institute for Defense Analyses
--- finished re-building ‘ciTools-binomial-vignette.Rmd’

--- re-building ‘ciTools-demo.Rmd’ using rmarkdown
Quitting from lines 136-145 (ciTools-demo.Rmd) 
Error: processing vignette 'ciTools-demo.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘ciTools-demo.Rmd’

--- re-building ‘ciTools-glm-vignette.Rmd’ using rmarkdown
── Attaching packages ────────────────────────────────── tidyverse 1.2.1 ──
✔ ggplot2 3.1.0       ✔ purrr   0.3.2  
✔ tibble  2.1.1       ✔ dplyr   0.8.0.1
✔ tidyr   0.8.3       ✔ stringr 1.4.0  
✔ readr   1.3.1       ✔ forcats 0.4.0  
── Conflicts ───────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
ciTools version 0.5.1 (C) Institute for Defense Analyses

Attaching package: 'MASS'

The following object is masked from 'package:dplyr':

    select

Loading required package: Matrix

Attaching package: 'Matrix'

The following object is masked from 'package:tidyr':

    expand

Loading required package: lme4

arm (Version 1.10-1, built: 2018-4-12)

Working directory is /home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/ciTools.Rcheck/vign_test/ciTools/vignettes

Quitting from lines 177-183 (ciTools-glm-vignette.Rmd) 
Error: processing vignette 'ciTools-glm-vignette.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘ciTools-glm-vignette.Rmd’

--- re-building ‘ciTools_survreg_vignette.Rmd’ using rmarkdown
── Attaching packages ────────────────────────────────── tidyverse 1.2.1 ──
✔ ggplot2 3.1.0       ✔ purrr   0.3.2  
✔ tibble  2.1.1       ✔ dplyr   0.8.0.1
✔ tidyr   0.8.3       ✔ stringr 1.4.0  
✔ readr   1.3.1       ✔ forcats 0.4.0  
── Conflicts ───────────────────────────────────── tidyverse_conflicts() ──
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag()    masks stats::lag()
ciTools version 0.5.1 (C) Institute for Defense Analyses
here() starts at /home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/ciTools.Rcheck/vign_test/ciTools
Quitting from lines 273-277 (ciTools_survreg_vignette.Rmd) 
Error: processing vignette 'ciTools_survreg_vignette.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘ciTools_survreg_vignette.Rmd’

--- re-building ‘citools-merMod-vignette.Rmd’ using rmarkdown
Quitting from lines 232-239 (citools-merMod-vignette.Rmd) 
Error: processing vignette 'citools-merMod-vignette.Rmd' failed with diagnostics:
VECTOR_ELT() can only be applied to a 'list', not a 'double'
--- failed re-building ‘citools-merMod-vignette.Rmd’

SUMMARY: processing the following files failed:
  ‘ciTools-demo.Rmd’ ‘ciTools-glm-vignette.Rmd’
  ‘ciTools_survreg_vignette.Rmd’ ‘citools-merMod-vignette.Rmd’

Error: Vignette re-building failed.
Execution halted