CI Failure: R CPU

[haojin2]

https://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-cpu/detail/PR-14606/4/pipeline/248
and
https://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-cpu/detail/PR-14606/4/pipeline/249

The downloaded source packages are in
	'/tmp/Rtmp9NpgwT/downloaded_packages'
Warning message:
In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE,  :
  there is no package called 'roxygen2'
Rscript -e "library(devtools); library(methods); options(repos=c(CRAN='https://cloud.r-project.org/')); install_deps(pkg='R-package', dependencies = TRUE)"
Error in match.arg(upgrade, c("ask", "always", "never")) : 
  'arg' must be of length 1
Calls: install_deps ... upgradable_packages -> resolve_upgrade -> match.arg
Execution halted
Makefile:621: recipe for target 'rpkg' failed
make: *** [rpkg] Error 1

[mxnet-label-bot]

Hey, this is the MXNet Label Bot.
Thank you for submitting the issue! I will try and suggest some labels so that the appropriate MXNet community members can help resolve it.
Here are my recommended labels: Test, CI

[zachgk]

This seems to completely break the CI. Here are some more errors

• Avoid secondary deployment of package to local #14647 with https://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-cpu/detail/PR-14647/1/pipeline and https://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-gpu/detail/PR-14647/1/pipeline
• Speed up SequenceReverse #14627 with https://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-cpu/detail/PR-14627/6/pipeline and https://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-gpu/detail/PR-14627/7/pipeline
• Optimize transpose operator with MKL-DNN #14545 with https://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-cpu/detail/PR-14545/8/pipeline and https://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-gpu/detail/PR-14545/8/pipeline

But, this seems to have affected every PR that has gone through the CI in the last 9 hours

[lanking520]

Some stackoverflow stuff:
https://stackoverflow.com/questions/55208794/trouble-installing-r-packages-with-devtools-on-travis

[lanking520]

Update: The author of R remote seemed to update their cron package. Please try to clean the cache on CI and build again: r-lib/devtools#2020

[lanking520]

The problem should resolve itself, no further action needed. Please restart the CI and feel free to close this issue if you are not facing this problems.

[lanking520]

Close this issue for now since there is no forseen problems in CI. Please feel free to reopen if you are still facing the problems