1. 2021-03-02 [ruby-core:102708] [Ruby master Bug#16979] FileUtils# ruby-core usa 2. 2020-06-27 [ruby-core:98976] [Ruby master Bug#16979] FileUtils#c ruby-core nagachika00 3. 2020-06-27 [ruby-core:98974] [Ruby master Bug#16979] FileUtils#c ruby-core nobu 4. 2020-06-24 [ruby-core:98926] [Ruby master Bug#16979] FileUtils#c ruby-core shyouhei 5. 2020-06-23 [ruby-core:98922] [Ruby master Bug#16979] FileUtils#c ruby-core daniele