async fn check_records(
session: &mut Imap,
checker: &Checker,
host: &str,
records: &mut [Record],
update: &mut Update,
) -> Result<(), SyncError>Expand description
New records checked as they come (Checked): each message fetched
whole (or its header block, above CHECK_WHOLE) from the folder open in
session, checked, the checks put in its record. Those left unchecked
(the DNS silent, a group cut short) wait for check_kept; a connection
lost is said, the checks made until then kept.