Error(s) in re-building vignettes:
  ...
--- re-building 'diagnostic.Rmd' using rmarkdown

Attaching package: 'tidyr'

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

    extract


Attaching package: 'purrr'

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

    set_names


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

Quitting from lines 53-66 (diagnostic.Rmd) 
Error: processing vignette 'diagnostic.Rmd' failed with diagnostics:
Unknown colour name: 2
--- failed re-building 'diagnostic.Rmd'

--- re-building 'pooling.Rmd' using rmarkdown

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

Warning: `cols` is now required.
Please use `cols = c(surveys)`
Warning: `cols` is now required.
Please use `cols = c(survey)`
Warning: All elements of `...` must be named.
Did you want `data = c(party, percent, votes)`?
Warning: `cols` is now required.
Please use `cols = c(data)`
Warning: `cols` is now required.
Please use `cols = c(survey)`
Warning: All elements of `...` must be named.
Did you want `data = c(party, percent, votes)`?
Warning: `cols` is now required.
Please use `cols = c(data)`
--- finished re-building 'pooling.Rmd'

--- re-building 'workflow.Rmd' using rmarkdown

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

Warning:  1 failed to parse.
Warning:  1 failed to parse.
Warning: All elements of `...` must be named.
Did you want `survey = c(party, percent, votes)`?
Warning: `cols` is now required.
Please use `cols = c(survey)`
Warning: `cols` is now required.
Please use `cols = c(draws)`
Warning: `cols` is now required.
Please use `cols = c(seats)`
Warning: `cols` is now required.
Please use `cols = c(seats)`
Warning: `cols` is now required.
Please use `cols = c(seats)`
Warning: `cols` is now required.
Please use `cols = c(majorities)`
Warning: `cols` is now required.
Please use `cols = c(probabilities)`
Warning: All elements of `...` must be named.
Did you want `survey = c(party, percent, votes)`?
Warning: `cols` is now required.
Please use `cols = c(probabilities)`
--- finished re-building 'workflow.Rmd'

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

Error: Vignette re-building failed.
Execution halted