def upgrade_home_path_v1_1
      if !ENV["VAGRANT_UPGRADE_SILENT_1_5"]
        @ui.ask(I18n.t("vagrant.upgrading_home_path_v1_5"))
      end

      collection = BoxCollection.new(
        @home_path.join("boxes"), temp_dir_root: tmp_path)
      collection.upgrade_v1_1_v1_5
    end
def upgrade_home_path_v1_1
      if !ENV["VAGRANT_UPGRADE_SILENT_1_5"]
        @ui.ask(I18n.t("vagrant.upgrading_home_path_v1_5"))
      end

      collection = BoxCollection.new(
        @home_path.join("boxes"), temp_dir_root: tmp_path)
      collection.upgrade_v1_1_v1_5
    end
This upgrades a home directory that was in the v1.1 format to the
 v1.5 format. It will raise exceptions if anything fails.