Bug: Duplicate call to connection_mark_for_close at ../src/feature/dirclient/dirclient.c:2861

(and other assorted bugs seemingly trigged by it), like

• tor_bug_occurred_(): Bug: ../src/core/mainloop/connection.c:1140: connection_mark_for_close_internal_: This line should not have been reached.
• Bug: Tor 0.4.8.16: Line unexpectedly reached at connection_mark_for_close_internal_ at ../src/core/mainloop/connection.c:1140
• Bug: Tor 0.4.8.16: Line unexpectedly reached at connection_edge_about_to_close at ../src/core/or/connection_edge.c:1086
• connection_ap_about_to_close(): Bug: Closing stream (marked at ../src/core/or/circuitlist.c:2716) without having set end_reason. (on Tor 0.4.8.16 )
• etc.

01:24:28 We're low on memory (cell queues total alloc: 1584 buffer total alloc: 520192, tor compress total alloc: 292862025 (zlib: 0, zstd: 0, lzma: 292861977), rendezvous cache total alloc: 0). Killing circuits withover-long queues. (This behavior is controlled by MaxMemInQueues.)
01:24:28 Removed 513584 bytes by killing 11 circuits; 0 circuits remain alive. Also killed 1 non-linked directory connections. Killed 2 edge connections
01:24:28 connection_mark_for_close_internal_(): Bug: Duplicate call to connection_mark_for_close at ../src/feature/dirclient/dirclient.c:2861 (first at ../src/core/or/circuitlist.c:2716) (on Tor 0.4.8.16 )
01:24:28 tor_bug_occurred_(): Bug: ../src/core/mainloop/connection.c:1140: connection_mark_for_close_internal_: This line should not have been reached. (Future instances of this warning will be silenced.) (on Tor 0.4.8.16 )
01:24:28 Bug: Tor 0.4.8.16: Line unexpectedly reached at connection_mark_for_close_internal_ at ../src/core/mainloop/connection.c:1140. Stack trace: (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(log_backtrace_impl+0x74) [0x5558d791d4] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(tor_bug_occurred_+0x148) [0x5558d859e8] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(connection_dir_reached_eof+0x394) [0x5558e5f1f4] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(+0x1b0bb0) [0x5558e30bb0] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(+0x6fba0) [0x5558cefba0] (on Tor 0.4.8.16 )
01:24:28 Bug:     /lib/aarch64-linux-gnu/libevent-2.1.so.7(+0x22610) [0x7fa1c82610] (on Tor 0.4.8.16 )
01:24:28 Bug:     /lib/aarch64-linux-gnu/libevent-2.1.so.7(event_base_loop+0x414) [0x7fa1c82db4] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(do_main_loop+0xe4) [0x5558cf1210] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(tor_run_main+0xe4) [0x5558cec0e4] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(tor_main+0x64) [0x5558ce8464] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(main+0x28) [0x5558ce7e68] (on Tor 0.4.8.16 )
01:24:28 Bug:     /lib/aarch64-linux-gnu/libc.so.6(+0x2229c) [0x7fa110229c] (on Tor 0.4.8.16 )
01:24:28 Bug:     /lib/aarch64-linux-gnu/libc.so.6(__libc_start_main+0x9c) [0x7fa110237c] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(_start+0x30) [0x5558ce7f30] (on Tor 0.4.8.16 )
01:24:28 connection_edge_about_to_close(): Bug: (Harmless.) Edge connection (marked at ../src/core/or/circuitlist.c:2716) hasn't sent end yet? (on Tor 0.4.8.16 )
01:24:28 tor_bug_occurred_(): Bug: ../src/core/or/connection_edge.c:1086: connection_edge_about_to_close: This line should not have been reached. (Future instances of this warning will be silenced.) (on Tor 0.4.8.16 )
01:24:28 Bug: Tor 0.4.8.16: Line unexpectedly reached at connection_edge_about_to_close at ../src/core/or/connection_edge.c:1086. Stack trace: (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(log_backtrace_impl+0x74) [0x5558d791d4] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(tor_bug_occurred_+0x148) [0x5558d859e8] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(connection_ap_about_to_close+0x30) [0x5558e339f4] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(+0x6ecb0) [0x5558ceecb0] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(+0x6f51c) [0x5558cef51c] (on Tor 0.4.8.16 )
01:24:28 Bug:     /lib/aarch64-linux-gnu/libevent-2.1.so.7(+0x22610) [0x7fa1c82610] (on Tor 0.4.8.16 )
01:24:28 Bug:     /lib/aarch64-linux-gnu/libevent-2.1.so.7(event_base_loop+0x414) [0x7fa1c82db4] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(do_main_loop+0xe4) [0x5558cf1210] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(tor_run_main+0xe4) [0x5558cec0e4] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(tor_main+0x64) [0x5558ce8464] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(main+0x28) [0x5558ce7e68] (on Tor 0.4.8.16 )
01:24:28 Bug:     /lib/aarch64-linux-gnu/libc.so.6(+0x2229c) [0x7fa110229c] (on Tor 0.4.8.16 )
01:24:28 Bug:     /lib/aarch64-linux-gnu/libc.so.6(__libc_start_main+0x9c) [0x7fa110237c] (on Tor 0.4.8.16 )
01:24:28 Bug:     /usr/bin/tor(_start+0x30) [0x5558ce7f30] (on Tor 0.4.8.16 )
01:24:28 connection_ap_about_to_close(): Bug: Closing stream (marked at ../src/core/or/circuitlist.c:2716) without having set end_reason. (on Tor 0.4.8.16 )
01:24:28 connection_edge_about_to_close(): Bug: (Harmless.) Edge connection (marked at ../src/core/or/circuitlist.c:2716) hasn't sent end yet? (on Tor 0.4.8.16 )
01:24:28 connection_ap_about_to_close(): Bug: Closing stream (marked at ../src/core/or/circuitlist.c:2716) without having set end_reason. (on Tor 0.4.8.16 )
01:24:29 Self-testing indicates your ORPort 9173 is reachable from the outside. Excellent. Publishing server descriptor.
01:24:30 We're low on memory (cell queues total alloc: 528 buffer total alloc: 8192, tor compress total alloc: 292862025 (zlib: 0, zstd: 0, lzma: 292861977), rendezvous cache total alloc: 0). Killing circuits withover-long queues. (This behavior is controlled by MaxMemInQueues.)
01:24:30 Removed 8720 bytes by killing 6 circuits; 0 circuits remain alive. Also killed 0 non-linked directory connections. Killed 1 edge connections
01:24:30 connection_edge_about_to_close(): Bug: (Harmless.) Edge connection (marked at ../src/core/or/circuitlist.c:2716) hasn't sent end yet? (on Tor 0.4.8.16 )
01:24:30 connection_ap_about_to_close(): Bug: Closing stream (marked at ../src/core/or/circuitlist.c:2716) without sending back a socks reply. (on Tor 0.4.8.16 )
01:24:30 connection_ap_about_to_close(): Bug: Closing stream (marked at ../src/core/or/circuitlist.c:2716) without having set end_reason. (on Tor 0.4.8.16 )