Because we are banned by AppVeyor. https://lists.apache.org/thread.html/rb56a964fc59bded278cf3cbc753a879c70b2078e9c0758057c982a2f%40%3Cdev.arrow.apache.org%3E **Reporter**: [Kouhei Sutou](https://issues.apache.org/jira/browse/ARROW-10539) / @kou **Assignee**: [Kouhei Sutou](https://issues.apache.org/jira/browse/ARROW-10539) / @kou #### PRs and other links: - [GitHub Pull Request #8620](https://github.com/apache/arrow/pull/8620) <sub>**Note**: *This issue was originally created as [ARROW-10539](https://issues.apache.org/jira/browse/ARROW-10539). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*</sub>