Error in re-building vignettes:
  ...
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  The vignette engine knitr::rmarkdown is not available, because the rmarkdown package is not installed. Please install it.
SciencesPo 1.4.1
Warning: `panel.margin` is deprecated. Please use `panel.spacing` property instead
Warning: `legend.margin` must be specified using `margin()`. For the old behavior use legend.spacing
Warning: `panel.margin` is deprecated. Please use `panel.spacing` property instead
Warning: `legend.margin` must be specified using `margin()`. For the old behavior use legend.spacing
Session info -------------------------------------------------------------
Packages -----------------------------------------------------------------
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  The vignette engine knitr::rmarkdown is not available, because the rmarkdown package is not installed. Please install it.
Vignettes in package 'SciencesPo':

SciencesPo            Concepts and Basics of the SciencesPo
                      Package (source, html)
Indices               Measures of Political Behavior (source,
                      html)
Viz                   The Anatomy of a Plot (source, html)

Data sets in package 'SciencesPo':

alpha                 A dataset that contains four test items
auto                  Statistics of 1979 automobile models
baseball              Bradley Efron and Carl Morris ("Stein's
                      Paradox in Statistics)
bhodrick93            Bekaert's and Hodrick's (1993) Data
big5                  Big 5 dataset
bollen                Bollen Data on Industrialization and
                      Political Democracy
bush                  Approval Ratings for President George W.
                      Bush
cathedrals            Cathedrals
cgreene76             Christensen's and Greene's (1976) Data
chismoke              Smoking and Lung Cancer in China
election2008          2008 U.S. presidential election
galton                Galton's Family Data on Human Stature.
griliches76           Griliches's (1976) Data
ltaylor96             Lothian's and Taylor's (1996) Data Set
marriage              Same Sex Marriage Public Opinion Data
mishkin92             Mishkin's (1992) Data
nerlove63             Marc Nerlove's (1963) data
paired                Paired Data
pollster2008          Polls for 2008 U.S. presidential election
religiosity           Data on religiosity of countries
sheston91             The Penn World Table
stature               The Measure of US Presidents
swatson93             Stock's and Watson's (1993) Data.
titanic               Titanic
turnout               Turnout Data
twins                 Burt's Twin Data
unions                Poll attitudes towards British trade unions
vote                  Voting correlations
words                 Word frequencies from Mosteller and Wallace

Help files with alias or concept or title matching 'D'Hondt' using
regular expression matching:


SciencesPo::dHondt    The D'Hondt Method of Allocating Seats
                      Proportionally


Type '?PKG::FOO' to inspect entries 'PKG::FOO', or 'TYPE?PKG::FOO'
for entries like 'PKG::FOO-TYPE'.




The following object is masked from package:SciencesPo:

    turnout

The following objects are masked from stature (pos = 3):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following object is masked from package:SciencesPo:

    turnout

The following objects are masked from stature (pos = 3):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following objects are masked from stature (pos = 4):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following object is masked from package:SciencesPo:

    turnout

The following objects are masked from stature (pos = 3):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following objects are masked from stature (pos = 4):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following objects are masked from stature (pos = 5):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following object is masked from package:SciencesPo:

    turnout

The following objects are masked from stature (pos = 3):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following objects are masked from stature (pos = 4):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following objects are masked from stature (pos = 5):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following objects are masked from stature (pos = 6):

    election, opponent, opponent.height, opponent.party,
    opponent.vote, turnout, winner, winner.bmi, winner.height,
    winner.party, winner.vote

The following object is masked from package:SciencesPo:

    turnout

Warning in `[.data.table`(.data, , `:=`(vars, lapply(.data[, vars, with = FALSE],  :
  with=FALSE together with := was deprecated in v1.9.4 released Oct 2014. Please wrap the LHS of := with parentheses; e.g., DT[,(myVar):=sum(b),by=a] to assign to column name(s) held in variable myVar. See ?':=' for other examples. As warned in 2014, this is now a warning.
.data was converted to a dataframe
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Warning: `panel.margin` is deprecated. Please use `panel.spacing` property instead
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Error: processing vignette ‘SciencesPo.Rmd’ failed with diagnostics:
invalid ‘times’ argument
Execution halted