async fn recv_gc_regions_reply(
peer: &Peer,
regions: &[RegionId],
description: &str,
mailbox_rx: MailboxReceiver,
) -> Result<GcReport>async fn recv_gc_regions_reply(
peer: &Peer,
regions: &[RegionId],
description: &str,
mailbox_rx: MailboxReceiver,
) -> Result<GcReport>