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.
Quitting from lines 13-47 (fivethirtyeight.Rmd) 
Error: processing vignette 'fivethirtyeight.Rmd' failed with diagnostics:
Problem with `mutate()` input `Preview`.
✖ object 'ONLY PREVIEW OF FIRST 10 ROWS INCLUDED IN PACKAGE?' not found
ℹ Input `Preview` is `ONLY PREVIEW OF FIRST 10 ROWS INCLUDED IN PACKAGE?`.
--- failed 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.
Parsed with column specification:
cols(
  year = col_double(),
  month = col_double(),
  date_of_month = col_double(),
  day_of_week = col_double(),
  births = col_double()
)
Parsed with column specification:
cols(
  year = col_double(),
  imdb = col_character(),
  title = col_character(),
  test = col_character(),
  clean_test = col_character(),
  binary = col_character(),
  budget = col_double(),
  domgross = col_character(),
  intgross = col_character(),
  code = col_character(),
  `budget_2013$` = col_double(),
  `domgross_2013$` = col_character(),
  `intgross_2013$` = col_character(),
  `period code` = col_double(),
  `decade code` = col_double()
)
--- finished 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:
  ‘fivethirtyeight.Rmd’

Error: Vignette re-building failed.
Execution halted