Error(s) in re-building vignettes:
--- re-building ‘quadtree-code.Rmd’ using rmarkdown

 *** caught bus error ***
address 0x7fe6f5a8c6a6, cause 'non-existent physical address'

Traceback:
 1: gettext("replacing previous import by %s when loading %s")
 2: namespaceImportFrom(ns, loadNamespace(j <- i[[1L]], c(lib.loc,     .libPaths()), versionCheck = vI[[j]]), i[[2L]], from = package)
 3: loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]])
 4: namespaceImport(ns, loadNamespace(i, c(lib.loc, .libPaths()),     versionCheck = vI[[i]]), from = package)
 5: loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]])
 6: asNamespace(ns)
 7: namespaceImportFrom(ns, loadNamespace(j <- i[[1L]], c(lib.loc,     .libPaths()), versionCheck = vI[[j]]), i[[2L]], from = package)
 8: loadNamespace(x)
 9: pandoc_available()
10: engine$weave(file, quiet = quiet, encoding = enc)
11: doTryCatch(return(expr), name, parentenv, handler)
12: tryCatchOne(expr, names, parentenv, handlers[[1L]])
13: tryCatchList(expr, classes, parentenv, handlers)
14: tryCatch({    engine$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)))})
15: tools:::.buildOneVignette("quadtree-code.Rmd", "/data/gannet/ripley/R/packages/tests-clang/quadtree.Rcheck/vign_test/quadtree",     TRUE, FALSE, "quadtree-code", "UTF-8", "/tmp/RtmpNkyHlC/working_dir/RtmpL4zPu1/file1879f06872721f.rds")
An irrecoverable exception occurred. R is aborting now ...
--- re-building ‘quadtree-creation.Rmd’ using rmarkdown
--- finished re-building ‘quadtree-creation.Rmd’

--- re-building ‘quadtree-lcp.Rmd’ using rmarkdown
[gannet:1609221:0:1609221] Caught signal 11 (Segmentation fault: address not mapped to object at address 0xf06)
--- re-building ‘quadtree-usage.Rmd’ using rmarkdown
--- finished re-building ‘quadtree-usage.Rmd’

+-+quadtree-usage.html
[gannet:1619914:0:1619914] Caught signal 11 (Segmentation fault: address not mapped to object at address 0x1090)
SUMMARY: processing the following files failed:
  ‘quadtree-code.Rmd’ ‘quadtree-lcp.Rmd’ ‘quadtree-usage.Rmd’

Error: Vignette re-building failed.
Execution halted