Tor repeatedly tells me that "Your Guard is failing an extremely large amount of circuits" when using snowflake

Of course, Snowflake works and I have no idea why the guard must be failing. Moreover, it says that message right after the 85% in the bootstrap and 90%:

[notice] Bootstrapped 80%: Connecting to the Tor network
[notice] Bootstrapped 85%: Finishing handshake with first hop
[warn] Your Guard [scrubbed] is failing an extremely large amount of circuits. This could indicate a route manipulation attack, extreme network overload, or a bug. Success counts are 50/169. Use counts are 73/76. 162 circuits completed, 1 were unusable, 112 collapsed, and 4 timed out. For reference, your timeout cutoff is 60 seconds.
[notice] Tor has successfully opened a circuit. Looks like client functionality is working.
[notice] Bootstrapped 100%: Done
[warn] Your Guard [scrubbed] is failing a very large amount of circuits. Most likely this means the Tor network is overloaded, but it could also mean an attack against you or potentially the guard itself. Success counts are 52/171. Use counts are 73/76. 164 circuits completed, 1 were unusable, 112 collapsed, and 4 timed out. For reference, your timeout cutoff is 60 seconds.