Error(s) in re-building vignettes:
  ...
--- re-building ‘Introduction.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 0, cause 'memory not mapped'

Traceback:
 1: fstretrieve(file_name, columns, from, to)
 2: read_fst(meta_info$path, j)
 3: `[.fst_table`(ft, logical_vec)
 4: ft[logical_vec]
 5: setDT(ft[logical_vec])
 6: select_fst(., Species, Sepal.Length, Sepal.Width)
 7: function_list[[i]](value)
 8: freduce(value, `_function_list`)
 9: `_fseq`(`_lhs`)
10: eval(quote(`_fseq`(`_lhs`)), env, env)
11: eval(quote(`_fseq`(`_lhs`)), env, env)
12: withVisible(eval(quote(`_fseq`(`_lhs`)), env, env))
13: ft %>% select_fst(Species, Sepal.Length, Sepal.Width) %>% rename(group = Species,     sl = Sepal.Length, sw = Sepal.Width) %>% arrange(group, sl) %>%     filter(sl > 5) %>% distinct(sl, .keep_all = TRUE) %>% summarise(sw = max(sw),     by = group)
14: eval(substitute(expr), envir = parent.frame())
15: eval(substitute(expr), envir = parent.frame())
16: sys_time_print({    res = ft %>% select_fst(Species, Sepal.Length, Sepal.Width) %>%         rename(group = Species, sl = Sepal.Length, sw = Sepal.Width) %>%         arrange(group, sl) %>% filter(sl > 5) %>% distinct(sl,         .keep_all = TRUE) %>% summarise(sw = max(sw), by = group)})
17: eval(expr, envir, enclos)
18: eval(expr, envir, enclos)
19: withVisible(eval(expr, envir, enclos))
20: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler,     error = eHandler, message = mHandler)
21: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir,     enclos)), warning = wHandler, error = eHandler, message = mHandler))
22: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr,     envir, enclos)), warning = wHandler, error = eHandler, message = mHandler)))
23: evaluate_call(expr, parsed$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)
24: evaluate::evaluate(...)
25: 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$render,         options))
26: in_dir(input_dir(), evaluate(code, envir = env, new_device = FALSE,     keep_warning = !isFALSE(options$warning), keep_message = !isFALSE(options$message),     stop_on_error = if (options$error && options$include) 0L else 2L,     output_handler = knit_handlers(options$render, options)))
27: block_exec(params)
28: call_block(x)
29: process_group.block(group)
30: process_group(group)
31: 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$get("infile"),             ") ")    })
32: process_file(text, output)
33: knit(input, text = text, envir = envir, quiet = quiet)
34: knit2html(..., force_v1 = TRUE)
35: (if (grepl("\\.[Rr]md$", file)) knit2html_v1 else if (grepl("\\.[Rr]rst$",     file)) knit2pandoc else knit)(file, encoding = encoding,     quiet = quiet, envir = globalenv(), ...)
36: vweave(...)
37: engine$weave(file, quiet = quiet, encoding = enc)
38: doTryCatch(return(expr), name, parentenv, handler)
39: tryCatchOne(expr, names, parentenv, handlers[[1L]])
40: tryCatchList(expr, classes, parentenv, handlers)
41: 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)    }    outputs <- c(outputs, output)}, error = function(e) {    thisOK <<- FALSE    fails <<- c(fails, file)    message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s",         file, conditionMessage(e)))})
42: tools:::buildVignettes(dir = "/home/ripley/R/packages/tests32/tidyft.Rcheck/vign_test/tidyft",     ser_elibs = "/tmp/RtmpYoaaAL/file4ad03d7c6cb2.rds")
An irrecoverable exception occurred. R is aborting now ...