Error(s) in re-building vignettes:
  ...
--- re-building ‘Resampling.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.
Quitting from lines 151-152 (Resampling.Rmd) 
Error: processing vignette 'Resampling.Rmd' failed with diagnostics:
cannot open the connection to 'http://www.mosaic-web.org/go/datasets/MustangPrice.csv'
--- failed re-building ‘Resampling.Rmd’

--- re-building ‘mosaic-resources.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 ‘mosaic-resources.Rmd’

--- re-building ‘MinimalRgg.Rnw’ using knitr
Loading required package: mosaic
Registered S3 method overwritten by 'mosaic':
  method                           from   
  fortify.SpatialPolygonsDataFrame ggplot2

The 'mosaic' package masks several functions from core packages in order to add 
additional features.  The original behavior of these functions should not be affected by this.

Attaching package: 'mosaic'

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

    count, do, tally

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

    mean

The following object is masked from 'package:ggplot2':

    stat

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

    IQR, binom.test, cor, cor.test, cov, fivenum, median, prop.test,
    quantile, sd, t.test, var

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

    max, mean, min, prod, range, sample, sum

Loading required package: parallel
Using parallel package.
  * Set seed with set.rseed().
  * Disable this message with options(`mosaic:parallelMessage` = FALSE)

Using parallel package.
  * Set seed with set.rseed().
  * Disable this message with options(`mosaic:parallelMessage` = FALSE)

--- finished re-building ‘MinimalRgg.Rnw’

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

Error: Vignette re-building failed.
Execution halted