Error(s) in re-building vignettes:
  ...
--- re-building ‘RxODE-cmt.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 ‘RxODE-cmt.Rmd’

--- re-building ‘RxODE-covariates.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.
udunits system database from /usr/local/share/udunits
--- finished re-building ‘RxODE-covariates.Rmd’

--- re-building ‘RxODE-data-frame.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.
udunits system database from /usr/local/share/udunits

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

--- finished re-building ‘RxODE-data-frame.Rmd’

Segmentation Fault - core dumped
--- re-building ‘RxODE-events.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.

 *** caught segfault ***
address 84ad0d4, cause 'memory not mapped'

Traceback:
 1: fansi::strip_sgr(x, warn = FALSE)
 2: get_extent(x)
 3: align(str_trunc(x, width))
 4: format_title(x, width = Inf)
 5: force(x)
 6: get_extent(x)
 7: get_max_extent(format_title(x, width = Inf))
 8: new_pillar_title(title, ...)
 9: (function (x, title = NULL, ...) {    title <- new_pillar_title(title, ...)    type <- new_pillar_type(x, ...)    new_pillar_capital(title, type)})(dots[[1L]][[2L]], dots[[2L]][[2L]])
10: mapply(FUN = f, ..., SIMPLIFY = FALSE)
11: Map(.f, .x, .y, ...)
12: map2(.x, names, .f)
13: map_named(x[seq_len(init_cols)], pillar_capital)
14: colonnade_get_width(x, width, rowid_width)
15: pillar::squeeze(x$mcf, width = width)
16: format.trunc_mat(mat)
17: format(mat)
18: format.tbl(x, ..., n = n, width = width, n_extra = n_extra)
19: format(x, ..., n = n, width = width, n_extra = n_extra)
20: paste0(..., "\n")
21: cat(paste0(..., "\n"), sep = "")
22: cat_line(format(x, ..., n = n, width = width, n_extra = n_extra))
23: print.tbl(dplyr::as.tbl(data.frame(x)))
24: print(dplyr::as.tbl(data.frame(x)))
25: print.rxEt(x)
26: print(x)
27: normal_print(x)
28: knit_print.default(x, ...)
29: knit_print(x, ...)
30: withVisible(knit_print(x, ...))
31: fun(x, options = options)
32: value_fun(ev$value, ev$visible)
33: withVisible(value_fun(ev$value, ev$visible))
34: withCallingHandlers(withVisible(value_fun(ev$value, ev$visible)),     warning = wHandler, error = eHandler, message = mHandler)
35: handle(pv <- withCallingHandlers(withVisible(value_fun(ev$value,     ev$visible)), warning = wHandler, error = eHandler, message = mHandler))
36: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos,     debug = debug, last = i == length(out), use_try = stop_on_error !=         2L, keep_warning = keep_warning, keep_message = keep_message,     output_handler = output_handler, include_timing = include_timing)
37: evaluate::evaluate(...)
38: evaluate(code, envir = env, new_device = FALSE, keep_warning = !isFALSE(options$warning),     keep_message = !isFALSE(options$message), stop_on_error = if (options$error &&         options$include) 0L else 2L, output_handler = knit_handlers(options$render,         options))
39: in_dir(input_dir(), evaluate(code, envir = env, new_device = FALSE,     keep_warning = !isFALSE(options$warning), keep_message = !isFALSE(options$message),     stop_on_error = if (options$error && options$include) 0L else 2L,     output_handler = knit_handlers(options$render, options)))
40: block_exec(params)
41: call_block(x)
42: process_group.block(group)
43: process_group(group)
44: withCallingHandlers(if (tangle) process_tangle(group) else process_group(group),     error = function(e) {        setwd(wd)        cat(res, sep = "\n", file = output %n% "")        message("Quitting from lines ", paste(current_lines(i),             collapse = "-"), " (", knit_concord$get("infile"),             ") ")    })
45: process_file(text, output)
46: knit(input, text = text, envir = envir, quiet = quiet)
47: knit2html(..., force_v1 = TRUE)
48: (if (grepl("\\.[Rr]md$", file)) knit2html_v1 else if (grepl("\\.[Rr]rst$",     file)) knit2pandoc else knit)(file, encoding = encoding,     quiet = quiet, envir = globalenv(), ...)
49: vweave(...)
50: engine$weave(file, quiet = quiet, encoding = enc)
51: doTryCatch(return(expr), name, parentenv, handler)
52: tryCatchOne(expr, names, parentenv, handlers[[1L]])
53: tryCatchList(expr, classes, parentenv, handlers)
54: tryCatch({    engine$weave(file, quiet = quiet, encoding = enc)    setwd(startdir)    output <- find_vignette_product(name, by = "weave", engine = engine)    if (!have.makefile && vignette_is_tex(output)) {        texi2pdf(file = output, clean = FALSE, quiet = quiet)        output <- find_vignette_product(name, by = "texi2pdf",             engine = engine)    }}, error = function(e) {    OK <<- FALSE    message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s",         file, conditionMessage(e)))})
55: tools:::.buildOneVignette("RxODE-events.Rmd", "/home/ripley/R/packages/tests32/RxODE.Rcheck/vign_test/RxODE",     TRUE, FALSE, "RxODE-events", "UTF-8", "/tmp/Rtmpfya4Lw/working_dir/RtmpBvaaKu/file2920c956d2.rds")
An irrecoverable exception occurred. R is aborting now ...
--- re-building ‘RxODE-intro.Rmd’ using rmarkdown
Warning in engine$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 ‘RxODE-intro.Rmd’

--- re-building ‘RxODE-model-types.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 65-68 (RxODE-model-types.Rmd) 
Error: processing vignette 'RxODE-model-types.Rmd' failed with diagnostics:
there is no package called 'webshot'
--- failed re-building ‘RxODE-model-types.Rmd’

--- re-building ‘RxODE-rxUse.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 ‘RxODE-rxUse.Rmd’

--- re-building ‘RxODE-shiny.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 ‘RxODE-shiny.Rmd’

--- re-building ‘RxODE-stiff.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 ‘RxODE-stiff.Rmd’

--- re-building ‘RxODE-syntax.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 ‘RxODE-syntax.Rmd’

--- re-building ‘RxODE-transit-compartments.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 ‘RxODE-transit-compartments.Rmd’

SUMMARY: processing the following files failed:
  ‘RxODE-events.Rmd’ ‘RxODE-model-types.Rmd’

Error: Vignette re-building failed.
Execution halted