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GitHub Actions ReviewDog がエラー

Posted at 2021-03-08

ReviewDogをGithub actions経由で使っていたら急にエラーが発生

 Installing rubocop with extensions ... https://github.com/rubocop/rubocop
  ERROR:  While executing gem ... (Gem::FilePermissionError)
      You don't have write permissions for the /var/lib/gems/2.7.0 directory.

原因はubuntu-latetのデフォルトruby versionが 2.5.1から2.7.0に変わったこと。
https://github.com/actions/virtual-environments/issues/1816

reviewdoc.yaml

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: ruby/setup-ruby@v1
      with:
         ruby-version: 2.6.5 #マイクロバージョンまで指定可能

こんな感じでyamlにrubyのバージョンを指定するようにすればOK
他に指定できるバージョンはこちらから参照可能
https://github.com/ruby/setup-ruby

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GitHub Actions ReviewDog がエラー

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