_testembed: ../Objects/object.c:196: _PyRefchain_Remove: Assertion `value == REFCHAIN_VALUE' failed.

#5  0x00007fbd32045eb2 in __GI___assert_fail (    assertion=assertion@entry=0x55f8c78ecded "value == REFCHAIN_VALUE",     file=file@entry=0x55f8c78ecd93 "../Objects/object.c", line=line@entry=196,     function=function@entry=0x55f8c78edba0 <__PRETTY_FUNCTION__.13> "_PyRefchain_Remove")    at ./assert/assert.c:101#6  0x000055f8c76c9999 in _PyRefchain_Remove (interp=<optimized out>, obj=obj@entry=0x7fbd3183d710)    at ../Objects/object.c:196#7  0x000055f8c76cb6c3 in _Py_ForgetReference (op=op@entry=0x7fbd3183d710) at ../Objects/object.c:2548#8  0x000055f8c76ca91d in _Py_Dealloc (op=op@entry=0x7fbd3183d710) at ../Objects/object.c:2923#9  0x000055f8c76b2ad4 in Py_DECREF (filename=filename@entry=0x55f8c78b4f72 "../Include/refcount.h",     lineno=lineno@entry=476, op=0x7fbd3183d710) at ../Include/refcount.h:367#10 0x000055f8c76b2af3 in Py_XDECREF (op=<optimized out>) at ../Include/refcount.h:476#11 0x000055f8c76b2c0f in dictkeys_decref (interp=interp@entry=0x7fbd31f6e020,     dk=dk@entry=0x55f8c9b29030, use_qsbr=use_qsbr@entry=false) at ../Objects/dictobject.c:459#12 0x000055f8c76bca24 in dict_dealloc (self=0x7fbd31765070) at ../Objects/dictobject.c:3187#13 0x000055f8c76ca923 in _Py_Dealloc (op=op@entry=0x7fbd31765070) at ../Objects/object.c:2925#14 0x000055f8c76c67ab in Py_DECREF (    filename=filename@entry=0x55f8c78ec613 "../Objects/moduleobject.c", lineno=lineno@entry=1118,     op=0x7fbd31765070) at ../Include/refcount.h:367#15 0x000055f8c76c6bdb in module_clear (self=0x7fbd31764110) at ../Objects/moduleobject.c:1118#16 0x000055f8c77e604a in delete_garbage (tstate=tstate@entry=0x7fbd31fa4d18,     gcstate=gcstate@entry=0x7fbd31f6fd08, collectable=collectable@entry=0x7ffd93cac500,     old=old@entry=0x7fbd31f6fd50) at ../Python/gc.c:1126#17 0x000055f8c77e62f7 in gc_collect_region (tstate=tstate@entry=0x7fbd31fa4d18,     from=from@entry=0x7fbd31f6fd50, to=to@entry=0x7fbd31f6fd50, untrack=untrack@entry=3,     stats=stats@entry=0x7ffd93cac5e0) at ../Python/gc.c:1585#18 0x000055f8c77e6790 in gc_collect_full (tstate=tstate@entry=0x7fbd31fa4d18,     stats=stats@entry=0x7ffd93cac5e0) at ../Python/gc.c:1498#19 0x000055f8c77e7070 in _PyGC_Collect (tstate=0x7fbd31fa4d18, generation=generation@entry=2,     reason=reason@entry=_Py_GC_REASON_SHUTDOWN) at ../Python/gc.c:1862#20 0x000055f8c77e70ce in _PyGC_CollectNoFail (tstate=tstate@entry=0x7fbd31fa4d18)    at ../Python/gc.c:1903#21 0x000055f8c7818408 in finalize_modules (tstate=tstate@entry=0x7fbd31fa4d18)    at ../Python/pylifecycle.c:1716#22 0x000055f8c781e9f4 in Py_EndInterpreter (tstate=tstate@entry=0x7fbd31fa4d18)    at ../Python/pylifecycle.c:2409#23 0x000055f8c781ec3a in finalize_subinterpreters () at ../Python/pylifecycle.c:2484#24 0x000055f8c781edc3 in _Py_Finalize (runtime=runtime@entry=0x55f8c7b1e000 <_PyRuntime>)    at ../Python/pylifecycle.c:2088#25 0x000055f8c781ef34 in Py_Finalize () at ../Python/pylifecycle.c:2216#26 0x000055f8c75e90ec in test_audit_subinterpreter () at ../Programs/_testembed.c:1431#27 0x000055f8c75ece41 in main (argc=<optimized out>, argv=0x7ffd93cac888)    at ../Programs/_testembed.c:2520

(rr) p *op$3 = {{ob_refcnt = 0, ob_refcnt_split = {0, 0}}, ob_type = 0x55f8c7b00c40 <PyUnicode_Type>}(rr) p op$4 = 'time_ns'

--- a/Objects/object.c+++ b/Objects/object.c@@ -2537,6 +2537,13 @@ _Py_ForgetReference(PyObject *op)      PyInterpreterState *interp = _PyInterpreterState_GET(); +    if (!_PyRefchain_IsTraced(interp, op) &&+        PyUnicode_Check(op) &&+        PyUnicode_CHECK_INTERNED(op) &&+        interp != _PyInterpreterState_Main()) {+        return;+    }+ #ifdef SLOW_UNREF_CHECK     if (!_PyRefchain_Get(interp, op)) {         /* Not found */