referrerpolicy=no-referrer-when-downgrade

EXPIRED_UNPROMOTED

sc_hop::metrics::removal_reasons

Constant EXPIRED_UNPROMOTED 

Source 
pub const EXPIRED_UNPROMOTED: &str = "expired_unpromoted";
Expand description

Expired without the node ever observing the entry on-chain. An upper bound on loss: re-checking stops at MAX_PROMOTION_ATTEMPTS.