./sage -tp --random-seed=11559027636060728728796865698718805166 src/sage/quadratic_forms/binary_qf.py

Doctesting 1 file using 8 threads.
sage -t --random-seed=11559027636060728728796865698718805166 src/sage/quadratic_forms/binary_qf.py
**********************************************************************
File "src/sage/quadratic_forms/binary_qf.py", line 1597, in sage.quadratic_forms.binary_qf.BinaryQF.solve_integer
Failed example:
    xy = Q.solve_integer(n)
Exception raised:
    Traceback (most recent call last):
      File "/home/scratch/scratch2/dimpase/sage/sage/src/sage/doctest/forker.py", line 695, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File "/home/scratch/scratch2/dimpase/sage/sage/src/sage/doctest/forker.py", line 1093, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.quadratic_forms.binary_qf.BinaryQF.solve_integer[18]>", line 1, in <module>
        xy = Q.solve_integer(n)
      File "/home/scratch/scratch2/dimpase/sage/sage/src/sage/quadratic_forms/binary_qf.py", line 1634, in solve_integer
        y = y_num // Q._b
      File "sage/structure/element.pyx", line 1838, in sage.structure.element.Element.__floordiv__
        return (<Element>left)._floordiv_(right)
      File "sage/rings/integer.pyx", line 2091, in sage.rings.integer.Integer._floordiv_
        raise ZeroDivisionError("Integer division by zero")
    ZeroDivisionError: Integer division by zero
**********************************************************************
File "src/sage/quadratic_forms/binary_qf.py", line 1598, in sage.quadratic_forms.binary_qf.BinaryQF.solve_integer
Failed example:
    Q(*xy) == n
Exception raised:
    Traceback (most recent call last):
      File "/home/scratch/scratch2/dimpase/sage/sage/src/sage/doctest/forker.py", line 695, in _run
        self.compile_and_execute(example, compiler, test.globs)
      File "/home/scratch/scratch2/dimpase/sage/sage/src/sage/doctest/forker.py", line 1093, in compile_and_execute
        exec(compiled, globs)
      File "<doctest sage.quadratic_forms.binary_qf.BinaryQF.solve_integer[19]>", line 1, in <module>
        Q(*xy) == n
    TypeError: 207872*x^2 - 2156672*x*y + 5593868*y^2 argument after * must be an iterable, not NoneType
**********************************************************************
1 item had failures:
   2 of  23 in sage.quadratic_forms.binary_qf.BinaryQF.solve_integer
    [313 tests, 2 failures, 0.21 s]
----------------------------------------------------------------------
sage -t --random-seed=11559027636060728728796865698718805166 src/sage/quadratic_forms/binary_qf.py  # 2 doctests failed
----------------------------------------------------------------------

sage: RR.<x,y>=ZZ[]
sage: Q=BinaryQF(207872*x^2 - 2156672*x*y + 5593868*y^2)
sage: Q.solve_integer(812)
---------------------------------------------------------------------------
ZeroDivisionError                         Traceback (most recent call last)
Cell In [10], line 1
----> 1 Q.solve_integer(Integer(812))

File /home/scratch/scratch2/dimpase/sage/sage/src/sage/quadratic_forms/binary_qf.py:1638, in BinaryQF.solve_integer(self, n)
   1636     y_num = n // x - Q._a * x
   1637     if Q._b.divides(y_num):
-> 1638         y = y_num // Q._b
   1639         return tuple(row[0]*x + row[1]*y for row in M.rows())
   1641 return None

File /home/scratch/scratch2/dimpase/sage/sage/src/sage/structure/element.pyx:1838, in sage.structure.element.Element.__floordiv__()
   1836 cdef int cl = classify_elements(left, right)
   1837 if HAVE_SAME_PARENT(cl):
-> 1838     return (<Element>left)._floordiv_(right)
   1839 if BOTH_ARE_ELEMENT(cl):
   1840     return coercion_model.bin_op(left, right, floordiv)

File /home/scratch/scratch2/dimpase/sage/sage/src/sage/rings/integer.pyx:2091, in sage.rings.integer.Integer._floordiv_()
   2089 """
   2090 if not mpz_sgn((<Integer>right).value):
-> 2091     raise ZeroDivisionError("Integer division by zero")
   2092 
   2093 cdef Integer z = <Integer>PY_NEW(Integer)

ZeroDivisionError: Integer division by zero