Error in re-building vignettes:
  ...
Found GPG 1.4.21. Using keyring: NA
Searching: https://pgp.mit.edu
Searching: https://pgp.mit.edu
pandoc.exe: Could not fetch https://jeroenooms.github.io/figures/pubkey-crypto/publickey-comic-m.png
StatusCodeException (Status {statusCode = 404, statusMessage = "Not Found"}) [("Server","GitHub.com"),("Content-Type","text/html; charset=utf-8"),("Strict-Transport-Security","max-age=31557600"),("ETag","W/\"58c827b5-105\""),("Access-Control-Allow-Origin","*"),("Content-Encoding","gzip"),("X-GitHub-Request-Id","B740:1820:30CBC6A:42694E5:58C8C3FF"),("Content-Length","179"),("Accept-Ranges","bytes"),("Date","Wed, 15 Mar 2017 04:33:04 GMT"),("Via","1.1 varnish"),("Age","0"),("Connection","keep-alive"),("X-Served-By","cache-hhn1544-HHN"),("X-Cache","MISS"),("X-Cache-Hits","0"),("X-Timer","S1489552383.934797,VS0,VE94"),("Vary","Accept-Encoding"),("X-Fastly-Request-ID","5bdc7640bd571a875736eeee7cf3dd069d0fd31a"),("X-Response-Body-Start","<html>\n<head>\n<title> Homepage redirect </title>\n<script>\nwindow.location.hostname = \"jeroen.github.io\"\n</script>\n</head>\n<body>\n<h1> Moved! </h1>\n<p> My homepage has moved to <a href=\"https://jeroen.github.io\">https://jeroen.github.io</a>.</p>\n</body>\n</html>\n"),("X-Request-URL","GET https://jeroenooms.github.io:443/figures/pubkey-crypto/publickey-comic-m.png")] (CJ {expose = []})
Warning: running command '"D:/compiler/pandoc/pandoc" +RTS -K512m -RTS intro.utf8.md --to html --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash-implicit_figures --output intro.html --smart --email-obfuscation none --self-contained --standalone --section-divs --table-of-contents --toc-depth 3 --variable toc_float=1 --variable toc_selectors=h1,h2,h3 --variable toc_print=1 --template "d:\RCompile\CRANpkg\lib\3.2\rmarkdown\rmd\h\default.html" --no-highlight --variable highlightjs=1 --variable "theme:bootstrap" --include-in-header "D:\temp\Rtmp69aWy6\rmarkdown-str2240433d2ac2.html"' had status 67
Error: processing vignette 'intro.Rmd' failed with diagnostics:
pandoc document conversion failed with error 67
Execution halted