FYI I run the relay 855BC2DABE24C861CD887DB9B2E950424B49FC34. Today I found a message in the log file I have not seen before:
Jun 26 18:05:20.000 [warn] circuit_unlink_all_from_channel(): Bug: Circuit on detached list which I had no reason to mark
Relay continues to run fine with 30 days uptime.