So pm2 (a node process manager package on npm) just caused thousands of CI builds to fail because of an "optionalDependency" on a package called gkt which is requested as a tarball from a server that was returning 503. That package consists of one file which contains this:
[Notice Regarding the Transfer of the mstdn.jp / mastodon.cloud Services] We have received several inquiries showing interest in a transfer following the announcement of the end of the mstdn.jp and mastodon.cloud services. As a result of subsequently evaluating the situation and making preparations, we have decided that the corresponding services will be transferred to Sujitech, LLC. on June 30. Thank you.