numpy.core.tests.test_regression.TestRegression.test_scalar_compare ... ok
numpy.core.tests.test_regression.TestRegression.test_scalar_copy ... Fatal error in cpyext, CPython compatibility layer, calling PyUnicode_AsASCIIString
Either report a bug or consider not using this particular extension
<StackOverflow object at 0x7ffff6d82b78>
RPython traceback:
  File "pypy_module_cpyext.c", line 8037, in wrapper_second_level__star_1_7
  File "pypy_module_cpyext_1.c", line 34923, in make_ref__StdObjSpaceConst_SomeInstance_NoneCons
  File "pypy_module_cpyext_1.c", line 46576, in create_ref
  File "pypy_objspace.c", line 858, in len
  File "pypy_interpreter.c", line 39311, in BuiltinCode1_fastcall_1
  File "rpython_rlib.c", line 22275, in stack_check_slowpath

Program received signal SIGSEGV, Segmentation fault.