1. 2015-10-01 [ruby-core:70960] [Ruby trunk - Misc #11548] FileUtil ruby-core wiltave 2. 2015-09-25 [ruby-core:70910] [Ruby trunk - Misc #11548] FileUtil ruby-core nobu 3. 2015-09-25 [ruby-core:70907] [Ruby trunk - Misc #11548] FileUtil ruby-core duerst