macos/grpc_build_artifacts fails consistently with __rvm_rm_rf already gone #23027
Description
==> Installing gnupg
==> Pouring gnupg-2.2.20.high_sierra.bottle.tar.gz
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink bin/gpg
Target /usr/local/bin/gpg
already exists. You may want to remove it:
rm '/usr/local/bin/gpg'
To force the link and overwrite all conflicting files:
brew link --overwrite gnupg
To list all files that would be deleted:
brew link --overwrite --dry-run gnupg
Possible conflicting files are:
/usr/local/bin/gpg -> /usr/local/bin/gpg2
/usr/local/bin/gpgconf -> /usr/local/gnupg-2.2/bin/gpgconf
/usr/local/bin/gpgsm -> /usr/local/gnupg-2.2/bin/gpgsm
Full log of a recent run: https://source.cloud.google.com/results/invocations/6c84725a-b21f-46c8-8ab8-c774726f3896/targets
Looks like this starts to fail consistently since about late May 20 (yesterday): https://fusion.corp.google.com/projectanalysis/summary/KOKORO/prod%3Agrpc%2Fcore%2Fpull_request%2Fmacos%2Fgrpc_build_artifacts
This also affects macos/grpc_basictests_ruby too (same error): https://fusion.corp.google.com/projectanalysis/summary/KOKORO/prod%3Agrpc%2Fcore%2Fpull_request%2Fmacos%2Fgrpc_basictests_ruby
To be exact, the error seems to start happening between May 20 6:35pm PDT and 8:17pm PDT