Arvados

I don't know whether or how often this is going to recur, but in run-tests-doc-pysdk-api-fuse: #589 :

trying URL 'https://cloud.r-project.org/src/contrib/xfun_0.49.tar.gz'
Error in download.file(url, destfile, method, mode = "wb", ...) : 
  (converted from warning) cannot open URL 'https://cloud.r-project.org/src/contrib/xfun_0.49.tar.gz': HTTP status was '403 Forbidden'
Error in download.packages(pkgs, destdir = tmpd, available = available,  : 
  (converted from warning) download of package ‘xfun’ failed
Calls: <Anonymous> ... with_envvar -> force -> force -> i.p -> download.packages
Execution halted
======= sdk/R install -- FAILED