Error(s) in re-building vignettes:
--- re-building ‘varrank.Rmd’ using knitr
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Using optipng is skipped as output is variable
Error: processing vignette 'varrank.Rmd' failed with diagnostics:
114:49: unexpected symbol
113:       author = c(person(family = "Kraskov", given = c("Alexander")),
114:           person(family = "St{\\{}{\\backslash}"o
                                                     ^
--- failed re-building ‘varrank.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘varrank.Rmd’ using knitr
Error: processing vignette 'varrank.Rmd' failed with diagnostics:
114:49: unexpected symbol
113:       author = c(person(family = "Kraskov", given = c("Alexander")),
114:           person(family = "St{\\{}{\\backslash}"o
                                                     ^
--- failed re-building ‘varrank.Rmd’

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

Error: Vignette re-building failed.
Execution halted
Error(s) in re-building vignettes:
--- re-building ‘varrank.Rmd’ using knitr
Error: processing vignette 'varrank.Rmd' failed with diagnostics:
114:49: unexpected symbol
113:       author = c(person(family = "Kraskov", given = c("Alexander")),
114:           person(family = "St{\\{}{\\backslash}"o
                                                     ^
--- failed re-building ‘varrank.Rmd’

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

Error: Vignette re-building failed.
Execution halted