Developer credits
Git commits in Moodle 3.9.x by Colin Campbell
commit eeca35e4ad946382e82e16b6f4d757ffae9d5c62 Author: Colin Campbell <colin@umn.edu> Date: Thu, 10 Oct 2019 09:38:25 +0800 Tag: v3.9.0-beta MDL-52189 file: skip deleting temp files that appear during cleanup