builtins_test has an assertion failure

[tekknolagi]

cedar% ./build/bin/python library/builtins_test.py
.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................../home/max/Documents/code/skybison/runtime/interpreter.cpp:5297 loadMethodUpdateCache: check 'location.isValueCell()' failed: location must be ValueCell
Stack (most recent call first):
  File "library/builtins_test.py", line 7983 in test_delattr_deletes_module_attribute
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/case.py", line 633 in _callTestMethod
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/case.py", line 676 in run
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/case.py", line 736 in __call__
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/suite.py", line 122 in run
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/suite.py", line 84 in __call__
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/suite.py", line 122 in run
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/suite.py", line 84 in __call__
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/runner.py", line 176 in run
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/main.py", line 271 in runTests
  File "/home/max/Documents/code/skybison/build/lib/skybison3.8/unittest/main.py", line 101 in __init__
  File "", line ??? in _type_dunder_call
  File "library/builtins_test.py", line 12736 in <module>
zsh: IOT instruction (core dumped)  ./build/bin/python library/builtins_test.py
cedar%