urb@locnyl-dacdel:~$ lldb -c core
(lldb) target create --core "core"
Core file '/home/urb/core' (x86_64) was loaded.
(lldb) bt all
* thread #1, name = 'urbit', stop reason = signal SIGABRT
  * frame #0: 0x00007f243a9b0be0 libc.so.6`__GI_raise + 256
    frame #1: 0x00007f243a9b1e90 libc.so.6`__GI_abort + 528
    frame #2: 0x00007f243a9a96e7 libc.so.6`__assert_fail_base + 279
    frame #3: 0x00007f243a9a9792 libc.so.6`__GI___assert_fail + 66
    frame #4: 0x0000000000451af3 urbit`u3m_bail + 339
    frame #5: 0x000000000045199e urbit`c3_cooked + 14
    frame #6: 0x000000000046874a urbit`_write.part.0 + 74
    frame #7: 0x0000000000468c87 urbit`_term_spinner_cb + 855
    frame #8: 0x00000000004c5a97 urbit`uv__thread_start(arg=<unavailable>) at thread.c:52
    frame #9: 0x00007f243a7645a7 libpthread.so.0`start_thread + 199
    frame #10: 0x00007f243aa6e22f libc.so.6`__GI___clone + 63
  thread #2, stop reason = signal 0
    frame #0: 0x00007f243a76d86c libpthread.so.0`__lll_lock_wait + 28
    frame #1: 0x00007f243a766b65 libpthread.so.0`__GI___pthread_mutex_lock + 117
    frame #2: 0x00000000004c5ba9 urbit`uv_mutex_lock(mutex=<unavailable>) at thread.c:153
    frame #3: 0x000000000046a0db urbit`u3_term_stop_spinner + 139
    frame #4: 0x000000000046e8c6 urbit`_pier_work_poke + 1510
    frame #5: 0x000000000045553d urbit`_newt_read_cb + 285
    frame #6: 0x00000000004c385f urbit`uv__read(stream=0x00000000013e3190) at stream.c:1192
    frame #7: 0x00000000004c3f4c urbit`uv__stream_io(loop=<unavailable>, w=0x00000000013e3218, events=1) at stream.c:1259
    frame #8: 0x00000000004c89f0 urbit`uv__io_poll(loop=0x0000000000901d00, timeout=116560) at linux-core.c:380
    frame #9: 0x00000000004bae18 urbit`uv_run(loop=0x0000000000901d00, mode=UV_RUN_DEFAULT) at core.c:354
    frame #10: 0x00000000004665ca urbit`u3_daemon_commence + 266
    frame #11: 0x0000000000409bde urbit`main + 1422
    frame #12: 0x00007f243a99db8e libc.so.6`__libc_start_main + 238
    frame #13: 0x000000000040a6ba urbit`_start at start.S:120
  thread #3, stop reason = signal 0
    frame #0: 0x00007f243a76a592 libpthread.so.0`__pthread_cond_wait + 274
    frame #1: 0x00000000004c5f59 urbit`uv_cond_wait(cond=<unavailable>, mutex=<unavailable>) at thread.c:443
    frame #2: 0x00000000004b8148 urbit`worker(arg=<unavailable>) at threadpool.c:75
    frame #3: 0x00000000004c5a97 urbit`uv__thread_start(arg=<unavailable>) at thread.c:52
    frame #4: 0x00007f243a7645a7 libpthread.so.0`start_thread + 199
    frame #5: 0x00007f243aa6e22f libc.so.6`__GI___clone + 63
  thread #4, stop reason = signal 0
    frame #0: 0x00007f243a76a592 libpthread.so.0`__pthread_cond_wait + 274
    frame #1: 0x00000000004c5f59 urbit`uv_cond_wait(cond=<unavailable>, mutex=<unavailable>) at thread.c:443
    frame #2: 0x00000000004b8148 urbit`worker(arg=<unavailable>) at threadpool.c:75
    frame #3: 0x00000000004c5a97 urbit`uv__thread_start(arg=<unavailable>) at thread.c:52
    frame #4: 0x00007f243a7645a7 libpthread.so.0`start_thread + 199
    frame #5: 0x00007f243aa6e22f libc.so.6`__GI___clone + 63
  thread #5, stop reason = signal 0
    frame #0: 0x00007f243a76a592 libpthread.so.0`__pthread_cond_wait + 274
    frame #1: 0x00000000004c5f59 urbit`uv_cond_wait(cond=<unavailable>, mutex=<unavailable>) at thread.c:443
    frame #2: 0x00000000004b8148 urbit`worker(arg=<unavailable>) at threadpool.c:75
    frame #3: 0x00000000004c5a97 urbit`uv__thread_start(arg=<unavailable>) at thread.c:52
    frame #4: 0x00007f243a7645a7 libpthread.so.0`start_thread + 199
    frame #5: 0x00007f243aa6e22f libc.so.6`__GI___clone + 63
  thread #6, stop reason = signal 0
    frame #0: 0x00007f243a76a592 libpthread.so.0`__pthread_cond_wait + 274
    frame #1: 0x00000000004c5f59 urbit`uv_cond_wait(cond=<unavailable>, mutex=<unavailable>) at thread.c:443
    frame #2: 0x00000000004b8148 urbit`worker(arg=<unavailable>) at threadpool.c:75
    frame #3: 0x00000000004c5a97 urbit`uv__thread_start(arg=<unavailable>) at thread.c:52
    frame #4: 0x00007f243a7645a7 libpthread.so.0`start_thread + 199
    frame #5: 0x00007f243aa6e22f libc.so.6`__GI___clone + 63
(lldb)