Error(s) in re-building vignettes:
--- re-building 'basics.Rmd' using knitr
Loading required package: ggplot2
Warning: `select_()` was deprecated in dplyr 0.7.0.
Please use `select()` instead.
This warning is displayed once every 8 hours.
Call `lifecycle::last_warnings()` to see where this warning was generated.
Loading required package: MASS
Loading required package: strucchange
Loading required package: zoo

Attaching package: 'zoo'

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

    as.Date, as.Date.numeric

Loading required package: sandwich
Loading required package: urca
Loading required package: lmtest
--- finished re-building 'basics.Rmd'

--- re-building 'plot_dist.Rmd' using knitr
Loading required package: ggplot2
--- finished re-building 'plot_dist.Rmd'

--- re-building 'plot_lm.Rmd' using knitr
--- finished re-building 'plot_lm.Rmd'

--- re-building 'plot_map.Rmd' using knitr
Loading required package: maps
Warning: `rename_()` was deprecated in dplyr 0.7.0.
Please use `rename()` instead.
This warning is displayed once every 8 hours.
Call `lifecycle::last_warnings()` to see where this warning was generated.
--- finished re-building 'plot_map.Rmd'

--- re-building 'plot_pca.Rmd' using knitr
Loading required package: ggplot2
Warning: `select_()` was deprecated in dplyr 0.7.0.
Please use `select()` instead.
This warning is displayed once every 8 hours.
Call `lifecycle::last_warnings()` to see where this warning was generated.
Warning: `group_by_()` was deprecated in dplyr 0.7.0.
Please use `group_by()` instead.
See vignette('programming') for more help
This warning is displayed once every 8 hours.
Call `lifecycle::last_warnings()` to see where this warning was generated.
Scale for 'y' is already present. Adding another scale for 'y', which will
replace the existing scale.
--- finished re-building 'plot_pca.Rmd'

--- re-building 'plot_surv.Rmd' using knitr
Loading required package: ggplot2
Warning: Using formula(x) is deprecated when x is a character vector of length > 1.
  Consider formula(paste(x, collapse = " ")) instead.
Warning: `mutate_()` was deprecated in dplyr 0.7.0.
Please use `mutate()` instead.
See vignette('programming') for more help
This warning is displayed once every 8 hours.
Call `lifecycle::last_warnings()` to see where this warning was generated.
Warning: `group_by_()` was deprecated in dplyr 0.7.0.
Please use `group_by()` instead.
See vignette('programming') for more help
This warning is displayed once every 8 hours.
Call `lifecycle::last_warnings()` to see where this warning was generated.
--- finished re-building 'plot_surv.Rmd'

--- re-building 'plot_ts.Rmd' using knitr
Loading required package: ggplot2
Loading required package: MASS
Loading required package: strucchange
Loading required package: zoo

Attaching package: 'zoo'

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

    as.Date, as.Date.numeric

Loading required package: sandwich
Loading required package: urca
Loading required package: lmtest
Quitting from lines 97-101 (plot_ts.Rmd) 
Error: processing vignette 'plot_ts.Rmd' failed with diagnostics:
there is no package called 'forecast'
--- failed re-building 'plot_ts.Rmd'

SUMMARY: processing the following file failed:
  'plot_ts.Rmd'

Error: Vignette re-building failed.
Execution halted