背景

2022/12月になってからgithub actionでdb migrate周りでエラーになり出したので対処の覚書。
(原因を完全に特定しているわけではないのでさっくり)

エラー内容抜粋

LoadError: libffi.so.7: cannot open shared object file: No such file or directory - /home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/ffi-1.15.5/lib/ffi_c.so
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/bootsnap-1.15.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/bootsnap-1.15.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/activesupport-6.1.4.6/lib/active_support/dependencies.rb:332:in `block in require'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/activesupport-6.1.4.6/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/activesupport-6.1.4.6/lib/active_support/dependencies.rb:332:in `require'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/ffi-1.15.5/lib/ffi.rb:5:in `rescue in <main>'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/ffi-1.15.5/lib/ffi.rb:2:in `<main>'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/bootsnap-1.15.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/bootsnap-1.15.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/activesupport-6.1.4.6/lib/active_support/dependencies.rb:332:in `block in require'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/activesupport-6.1.4.6/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/runner/work/appname/vendor/bundle/ruby/3.0.0/gems/activesupport-6.1.4.6/lib/active_support/dependencies.rb:332:in `require'
...

似ていそうな問題
https://github.com/ffi/ffi/issues/881
https://github.com/orgs/community/discussions/24949

当方も　ruby/setup-ruby@v1 を利用しており、bundlerのキャッシュが効いている状態でffi周りのファイルが足りないと言うエラーが発生した。

対応

github actionのymlで cache-version を変更

      - name: Setup ruby
        uses: ruby/setup-ruby@v1
        with:
          bundler-cache: true
          ruby-version: 3.0.2
-         cache-version: 1
+         cache-version: 2