The current runner (ubuntu-24.04-x64) was detected as self-hosted because the platform does not match a GitHub-hosted runner image (or that image is deprecated and no longer supported). In such a case, you should install Ruby in the $RUNNER_TOOL_CACHE yourself, for example using https://github.com/rbenv/ruby-build You can take inspiration from this workflow for more details: https://github.com/ruby/ruby-builder/blob/master/.github/workflows/build.yml $ ruby-build 3.2.2 /opt/hostedtoolcache/Ruby/3.2.2/x64 Once that completes successfully, mark it as complete with: $ touch /opt/hostedtoolcache/Ruby/3.2.2/x64.complete It is your responsibility to ensure installing Ruby like that is not done in parallel.

The current runner (ubuntu-24.04-x64) was detected as self-hosted because the platform does not match a GitHub-hosted runner image (or that image is deprecated and no longer supported). In such a case, you should install Ruby in the $RUNNER_TOOL_CACHE yourself, for example using https://github.com/rbenv/ruby-build You can take inspiration from this workflow for more details: https://github.com/ruby/ruby-builder/blob/master/.github/workflows/build.yml $ ruby-build 3.2.2 /opt/hostedtoolcache/Ruby/3.2.2/x64 Once that completes successfully, mark it as complete with: $ touch /opt/hostedtoolcache/Ruby/3.2.2/x64.complete It is your responsibility to ensure installing Ruby like that is not done in parallel.

The following actions use a deprecated Node.js version and will be forced to run on node20: ruby/setup-ruby@55283cc23133118229fd3f97f9336ee23a179fcf. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/