Error(s) in re-building vignettes:
  ...
--- re-building ‘fivethirtyeight.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Parsed with column specification:
cols(
  .default = col_character(),
  ARTICLE_DATE = col_date(format = ""),
  DATAFRAME_NROWS = col_number(),
  DATAFRAME_NCOLS = col_double()
)
See spec(...) for full column specifications.
--- finished re-building ‘fivethirtyeight.Rmd’

--- re-building ‘tame.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.

Attaching package: 'ggplot2'

The following object is masked _by_ '.GlobalEnv':

    scale_fill_discrete


Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union


Attaching package: 'gridExtra'

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

    combine

Parsed with column specification:
cols(
  .default = col_character(),
  RespondentID = col_double()
)
See spec(...) for full column specifications.
Quitting from lines 306-310 (tame.Rmd) 
Error: processing vignette 'tame.Rmd' failed with diagnostics:
Timeout was reached: [bit.ly] Resolving timed out after 10000 milliseconds
--- failed re-building ‘tame.Rmd’

--- re-building ‘user_contributed_vignettes.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
--- finished re-building ‘user_contributed_vignettes.Rmd’

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

Error: Vignette re-building failed.
Execution halted