Github all checks have failed

Describes the cause and action for error messages.

Error Message(English)：
all checks have failed

Resolution

一部の PR では Scrivito に関するテストが落ちる問題を解決したい - GitHub
https://github.com/coderdojo-japan/coderdojo.jp/issues/160

Git Pull Requests are Failing - Stack Overflow
https://stackoverflow.com/questions/40828632/git-pull-requests-are-failing

Jenkins2.0のPipelineを触ってみたら便利だった - be-hase blog
https://be-hase.hatenablog.com/entry/2016/04/28/175311

Heroku - プルリクの際のHeroku CIのエラー｜teratail
https://teratail.com/questions/169884

githubでプルリクをする ? ソフトウェアエンジニアの技術ブログ ? Software ...
http://hpscript.com/blog/github%E3%81%A7%E3%83%97%E3%83%AB%E3%83%AA%E3%82%AF%E3%82%92%E3%81%99%E3%82・・・

Open Pull Request | Contribute to CircuitPython with Git and GitHub ...
https://learn.adafruit.com/contribute-to-circuitpython-with-git-and-github/open-pull-request

Contributing Code with Pull Requests | Marlin Firmware
http://marlinfw.org/docs/development/getting_started_pull_requests.html

SpECTRE: Travis CI
https://spectre-code.org/travis_guide.html

Learn Continuous Integration ? Git In-depth - Frontend Masters
https://frontendmasters.com/courses/git-in-depth/continuous-integration/