bridgestrap returning ECONNREFUSED for all bridges?

First reported on tor-relays@ but I just checked a bridge I got from bridgedb, and which I used successfully in my tor browser, but e.g. https://bridges.torproject.org/status?id=892CF98FB2151BA4C1AD519E63B1F84C48238616 says

Bridge 892CF98FB2151BA4C1AD519E63B1F84C48238616 advertises:

* obfs4: dysfunctional
  Error: We got an ECONNREFUSED while connecting to the target OR.
  Last tested: 2021-03-22 22:51:46.804048996 +0000 UTC (8h4m5.867658121s ago)

I'm guessing something got wedged. Maybe the Tor client connected to bridgestrap crashed? Maybe we want some sort of monitoring for this service? Maybe we already have it? :)