pathbias_count_use_attempt(): Bug: Used circuit 8 is in strange path state new. Circuit is a General-purpose client currently open.

On my Tor 0.4.7.2-alpha-dev 9d8b0c5b, I can induce this log message:

Nov 11 07:07:06.365 [notice] pathbias_count_use_attempt(): Bug: Used circuit 8 is in strange path state new. Circuit is a General-purpose client currently open. (on Tor 0.4.7.2-alpha-dev 9d8b0c5bdc6f7589)
Nov 11 07:07:06.392 [notice] pathbias_mark_use_success(): Bug: Used circuit 8 is in strange path state new. Circuit is a General-purpose client currently open. (on Tor 0.4.7.2-alpha-dev 9d8b0c5bdc6f7589)
Nov 11 07:07:06.393 [notice] pathbias_count_use_attempt(): Bug: Used circuit 8 is in strange path state new. Circuit is a General-purpose client currently open. (on Tor 0.4.7.2-alpha-dev 9d8b0c5bdc6f7589)

The way I do it is by going into the controller, and doing an

extendcircuit 0 moria1,CalyxInstitute14
mapaddress 10.10.10.11=128.31.0.34.0011BD2485AD45D984EC4159C88FC066E5E3300E.exit

and then from my shell, doing a

torify telnet 10.10.10.11 80

I successfully connect via that exit to the desired webserver. But the circuit that Tor made via extendcircuit hasn't set whatever flags or the like it was expecting to have set.