Bug: Non-fatal assertion ei failed in launch_intro_point_circuits at src/or/hs_service.c:1784
I had the following non-fatal assert trigger for me when I SIGTERMed my service in chutney:
Aug 08 10:34:25.000 [warn] Bug: Non-fatal assertion ei failed in launch_intro_point_circuits at src/or/hs_service.c:1784. Stack trace: (bon Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(log_backtrace+0x42) [0x2802a2] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(tor_bug_occurred_+0xb7) [0x299127] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(hs_service_run_scheduled_events+0x189d) [0x27339d] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(+0x4b198) [0x153198] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(+0x69e10) [0x171e10] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5(event_base_loop+0x7fc) [0x53613dc] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(do_main_loop+0x244) [0x156674] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(tor_main+0x1c35) [0x159ec5] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(main+0x19) [0x151de9] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x623db45] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:25.000 [warn] Bug: ./src/or/tor(+0x49e39) [0x151e39] (on Tor 0.3.2.0-alpha-dev eafb26f30db8c809)
Aug 08 10:34:26.000 [notice] Catching signal TERM, exiting cleanly.
I have not reproed it since then.