Error(s) in re-building vignettes:
  ...
--- re-building ‘overview.Rmd’ using rmarkdown
Could not fetch https://travis-ci.org/daattali/lightsout.svg?branch=master
HttpExceptionRequest Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
 (TooManyRedirects [Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:26 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=B2l3HyrSQIQ9Ol6zduNy2VmnR9230mNaB%2BfckUVWdtT9S8VIV5xzVqLsZmMJWU8OXEflxOLS%2FTaEjtVSUKk0k%2Bvi9os6rwBZjb2bHeKWXWZoZ5ebWaxurJj%2FSD01tsyH\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea858d637881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:26 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=oJme1YuGBfy3CseFTlIsF575kJMQ%2BcpepFYq1yQi1Lip4xg5b%2BO1Sp2297YbhjtmmGU9w4kNc%2FFtfffTT41hlzumlNKlm962jEwU1u%2Bss6uKUbmObhosyElHIBfVjIJL\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea84cc267881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:26 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=skhPUAqyFM24on1frW5SrpzCXKVtFijQk4m9hgutXi2F14WreU9FdtkyRuDlifOV52XCQ5%2BTqnVvqm0MEnsBScfLMtHIPQtW8IipKhzVeRY23xMd4rpc23XRTGyb4sb3\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea83fb0c7881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:26 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=gAT34PKR7pqVbuanwxQJpzd84m5qAqQaciHhbSEg4T1PKHShmAM8HqCl8%2BXB42uJKdOA1E2Y%2BIYXAs7Ja%2BcEaOLFKmRkAOQ1FC%2BJE4XHhiFup5JDLbNuK%2FiOzorXXPpt\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea8339de7881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:26 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=JYb%2BM%2BpGUjtPjfxoa7AeA8Dz2gQefoRZGCFlmAdQy33BNbKX304e77%2Bl6aN%2B674gILVkMprfAV%2FjKHScblRekOy2Ixk60lku0JDSfzBTl37BfDQYU9DR1Y3HpV9JVT%2FT\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea8268877881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:25 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=rX80QclMwx4hE2den4RbK8RTdtx0XD9l58s2ZVf7lf7x%2FMnaPEeSrim5gp1fwwR%2FwY6%2BuFqsw0AcvhPkWjn9t3D0F9WRt6XsDj%2FxMtJjcOs0E2zEFlVqDoN8b9S%2B0vEq\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea81af297881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:25 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=Gu3LXvBc3Di0oE%2FQ3oTnHXLNGZK4kj9%2Bw3JjlfsShkWB2DsfEmeLGFzGs2c6I%2BbSuYIpkS4hlSM9DsE4i%2Fvd8b1XwL4HRKA9%2BlbE2M5koZ8h34k4ioeaT2onHBLXO8PO\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea80ee057881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:25 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=SVMjZm8NX%2BE8D3KWSbvb%2BSTnRix9R%2FII3wOsHYjMIdnDsrWf04bs2%2BypOHev9jNMb7P0e9dtqI7AhyEnxmxHrnKBbkiMtqdTaI3c27dZCRs1KrrbsSAZQ7eg14zejU3c\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea801cc77881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:25 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=mrQddsjVvLP9BI4H0uHcZ83IAuINg1z5ST07Ga%2BQzkoe0j%2BZO%2Fw6chq9oFfdmQFnQEbVRqtzFnRFdL0ixGnXJRixRUBP4yVKobmzbZLAPM9aQa7uAlT1ZTTDMmzz4K81\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea7f5bb07881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:25 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=aDWd2rQstPSv8Fs77M5DEr3WpkFs9SlBgfPZPYam70mmUeKs6vjYwiB7RRKJp22KytCF03Os%2F5O6Y1B%2FcLVcqLiMqLPU3ByDqGuXmYSAqRxF7Vfsx6FzYOrHlTVvxlGM\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea7e9a827881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
},Response {responseStatus = Status {statusCode = 308, statusMessage = "Permanent Redirect"}, responseVersion = HTTP/1.1, responseHeaders = [("Date","Sat, 25 Mar 2023 17:36:25 GMT"),("Content-Type","text/html"),("Transfer-Encoding","chunked"),("Connection","keep-alive"),("Location","https://travis-ci.org/daattali/lightsout.svg?branch=master"),("CF-Cache-Status","BYPASS"),("Report-To","{\"endpoints\":[{\"url\":\"https:\\/\\/a.nel.cloudflare.com\\/report\\/v3?s=KdVIK5wVBboLbJ3otd7fUzzLRAwdigxPdpqGJPaxwWmCafvVLfWQ%2FUP7P2KJRoa1R%2F258ekTogg%2FlcBZnm%2FPxnrkx040Dm2BJRkrbK%2FRoMqQoCQTWULgyzgAgJ9GbXr0\"}],\"group\":\"cf-nel\",\"max_age\":604800}"),("NEL","{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"),("Vary","Accept-Encoding"),("Server","cloudflare"),("CF-RAY","7ad8ea7d18277881-VIE"),("alt-svc","h3=\":443\"; ma=86400, h3-29=\":443\"; ma=86400")], responseBody = "<html>\r\n<head><title>308 Permanent Redirect</title></head>\r\n<body>\r\n<center><h1>308 Permanent Redirect</h1></center>\r\n<hr><center>openresty</center>\r\n</body>\r\n</html>\r\n", responseCookieJar = CJ {expose = []}, responseClose' = ResponseClose, responseOriginalRequest = Request {
  host                 = "travis-ci.org"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/daattali/lightsout.svg"
  queryString          = "?branch=master"
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
}])
Error: processing vignette ‘overview.Rmd’ failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building ‘overview.Rmd’

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

Error: Vignette re-building failed.
Execution halted