Aha, looking at Test::Direcory, I would infer that the remove_files() and remove_directories() methods are used to remove files &/or directories from within the directory created by the constructor i.e. personally, I would expect the call $dir->remove_directories($log_dir); to fail because $log_dir is not a subdirectory of itself, the clean() method takes no args and is/should be used to rmdir the directory created by the constructor i.e. $log_dir.

HTH ,