Failed example:: Got: Family (1, B1, B3, B0, B2, B4, B5)

Failed example:: Got: False

Failed example:: Got:

Failed example:: Got: False

Failed example:: Got: Ad

Failed example:: Got: Chow ring of Wheel(2): Regular matroid of rank 2 on 4 elements with 5 bases

Failed example:: Exception raised: Traceback (most recent call last): File "sage/structure/category_object.pyx", line 857, in sage.structure.category_object.CategoryObject.getattr_from_category return self._cached_methods[name] KeyError: '_gens_constructor' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/sage/src/sage/doctest/forker.py", line 714, in _run self.compile_and_execute(example, compiler, test.globs) File "/sage/src/sage/doctest/forker.py", line 1144, in compile_and_execute exec(compiled, globs) File "<doctest sage.matroids.matroid.Matroid.chow_ring[2]>", line 1, in <module> A._gens_constructor() # needs sage.libs.singular File "sage/structure/category_object.pyx", line 851, in sage.structure.category_object.CategoryObject.__getattr__ return self.getattr_from_category(name) File "sage/structure/category_object.pyx", line 866, in sage.structure.category_object.CategoryObject.getattr_from_category attr = getattr_from_other_class(self, cls, name) File "sage/cpython/getattr.pyx", line 358, in sage.cpython.getattr.getattr_from_other_class raise AttributeError(dummy_error_message) AttributeError: 'ChowRing_with_category' object has no attribute '_gens_constructor'. Did you mean: '_test_construction'?

Failed example:: Got: A0^2

Failed example:: Got: Chow ring of Fano: Binary matroid of rank 3 on 7 elements, type (3, 0)

Failed example:: Got:

buildx failed with: ERROR: failed to solve: process "/bin/sh -c make SAGE_SPKG=\"sage-spkg -y -o\" ${USE_MAKEFLAGS} ${TARGETS}" did not complete successfully: exit code: 2