don't re-use a download until it's been removed from the download set
don't re-use a download until it's been removed from the download set

iychoi/syndicate-core,syndicate-storage/syndicate-core,iychoi/syndicate-core,syndicate-storage/syndicate-core,syndicate-storage/syndicate-core,iychoi/syndicate-core,iychoi/syndicate-core,syndicate-storage/syndicate-core