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

--- re-building ‘kable.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 ‘kable.Rmd’

--- re-building ‘rmarkdown.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 ‘rmarkdown.Rmd’

Segmentation Fault - core dumped
--- re-building ‘slickr.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 2c, cause 'memory not mapped'

Traceback:
 1: magick_image_readpath(enc2native(path), density, depth, strip)
 2: magick::image_read(tex_path(fileDir, stem, img_format))
 3: assert_image(image)
 4: magick::image_scale(magick::image_read(tex_path(fileDir, stem,     img_format)), paste(opts.html, collapse = "x"))
 5: tex_return(obj = tab_lines, stem, img_format = imgFormat)
 6: tex_preview.default(obj, tex_lines, stem, overwrite, keep_pdf,     tex_message, fileDir, margin, imgFormat, returnType, resizebox,     usrPackages, engine, cleanup, density, svg_max, print.xtable.opts,     opts.html, markers, ...)
 7: tex_preview.character(obj, tex_lines, stem, overwrite, keep_pdf,     tex_message, fileDir, margin, imgFormat, returnType, resizebox,     usrPackages, engine, cleanup, density, svg_max, print.xtable.opts,     opts.html, markers, ...)
 8: tex_preview(obj, tex_lines, stem, overwrite, keep_pdf, tex_message,     fileDir, margin, imgFormat, returnType, resizebox, usrPackages,     engine, cleanup, density, svg_max, print.xtable.opts, opts.html,     markers, ...)
 9: tex_preview.knitr_kable(., stem = "kable-1")
10: texPreview::tex_preview(., stem = "kable-1")
11: function_list[[k]](value)
12: withVisible(function_list[[k]](value))
13: freduce(value, `_function_list`)
14: `_fseq`(`_lhs`)
15: eval(quote(`_fseq`(`_lhs`)), env, env)
16: eval(quote(`_fseq`(`_lhs`)), env, env)
17: withVisible(eval(quote(`_fseq`(`_lhs`)), env, env))
18: knitr::kable(mtcars, "latex") %>% texPreview::tex_preview(stem = "kable-1")
19: eval(expr, envir, enclos)
20: eval(expr, envir, enclos)
21: withVisible(eval(expr, envir, enclos))
22: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler,     error = eHandler, message = mHandler)
23: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir,     enclos)), warning = wHandler, error = eHandler, message = mHandler))
24: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr,     envir, enclos)), warning = wHandler, error = eHandler, message = mHandler)))
25: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos,     debug = debug, last = i == length(out), use_try = stop_on_error !=         2L, keep_warning = keep_warning, keep_message = keep_message,     output_handler = output_handler, include_timing = include_timing)
26: evaluate::evaluate(...)
27: evaluate(code, envir = env, new_device = FALSE, keep_warning = !isFALSE(options$warning),     keep_message = !isFALSE(options$message), stop_on_error = if (options$error &&         options$include) 0L else 2L, output_handler = knit_handlers(options$render,         options))
28: 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$render, options)))
29: block_exec(params)
30: call_block(x)
31: process_group.block(group)
32: process_group(group)
33: withCallingHandlers(if (tangle) process_tangle(group) else process_group(group),     error = function(e) {        setwd(wd)        cat(res, sep = "\n", file = output %n% "")        message("Quitting from lines ", paste(current_lines(i),             collapse = "-"), " (", knit_concord$get("infile"),             ") ")    })
34: process_file(text, output)
35: knit(input, text = text, envir = envir, quiet = quiet)
36: knit2html(..., force_v1 = TRUE)
37: (if (grepl("\\.[Rr]md$", file)) knit2html_v1 else if (grepl("\\.[Rr]rst$",     file)) knit2pandoc else knit)(file, encoding = encoding,     quiet = quiet, envir = globalenv(), ...)
38: vweave(...)
39: engine$weave(file, quiet = quiet, encoding = enc)
40: doTryCatch(return(expr), name, parentenv, handler)
41: tryCatchOne(expr, names, parentenv, handlers[[1L]])
42: tryCatchList(expr, classes, parentenv, handlers)
43: tryCatch({    engine$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)))})
44: tools:::.buildOneVignette("slickr.Rmd", "/home/ripley/R/packages/tests32/texPreview.Rcheck/vign_test/texPreview",     TRUE, FALSE, "slickr", "UTF-8", "/tmp/Rtmpfhayl2/working_dir/RtmpfMaq3m/file19ba1f0020c0.rds")
An irrecoverable exception occurred. R is aborting now ...
--- re-building ‘tests_and_coverage.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 ‘tests_and_coverage.Rmd’

--- re-building ‘tex_packages.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 ‘tex_packages.Rmd’

--- re-building ‘tikz.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 ‘tikz.Rmd’

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

Error: Vignette re-building failed.
Execution halted