Traceback (most recent call last):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 151, in _run_module_as_main
    mod_name, loader, code, fname = _get_module_details(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 109, in _get_module_details
    return _get_module_details(pkg_main_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/runpy.py", line 101, in _get_module_details
    loader = get_loader(mod_name)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", line 464, in get_loader
    return find_loader(fullname)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", line 474, in find_loader
    for importer in iter_importers(fullname):
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python/pkgutil.py", line 430, in iter_importers
    __import__(pkg)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage_setup/docbuild/__init__.py", line 22, in <module>
    import sage.all
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/all.py", line 105, in <module>
    import sage.symbolic.pynac
  File "sage/symbolic/pynac.pyx", line 2371, in init sage.symbolic.pynac (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:28292)
  File "sage/symbolic/pynac.pyx", line 2257, in sage.symbolic.pynac.init_pynac_I (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/symbolic/pynac.cpp:24698)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py", line 898, in QuadraticField
    return NumberField(f, name, check=False, embedding=embedding, latex_name=latex_name, **args)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py", line 511, in NumberField
    return NumberField_version2(polynomial=polynomial, name=name, check=check, embedding=embedding, latex_name=latex_name, assume_disc_small=assume_disc_small, maximize_at_primes=maximize_at_primes, structure=structure)
  File "sage/structure/factory.pyx", line 363, in sage.structure.factory.UniqueFactory.__call__ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1550)
  File "sage/structure/factory.pyx", line 406, in sage.structure.factory.UniqueFactory.get_object (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/factory.c:1905)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py", line 633, in create_object
    return NumberField_quadratic(polynomial, name, latex_name, check, embedding, assume_disc_small=assume_disc_small, maximize_at_primes=maximize_at_primes, structure=structure)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/number_field/number_field.py", line 10129, in __init__
    self._standard_embedding = CDF.has_coerce_map_from(self) and CDF(rootD).imag() > 0
  File "sage/rings/complex_double.pyx", line 333, in sage.rings.complex_double.ComplexDoubleField_class.__call__ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_double.c:5300)
  File "sage/structure/parent.pyx", line 1111, in sage.structure.parent.Parent.__call__ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/parent.c:9828)
  File "sage/categories/map.pyx", line 1691, in sage.categories.map.FormalCompositeMap._call_ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/categories/map.c:11323)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 124, in sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3111)
  File "sage/rings/number_field/number_field_morphisms.pyx", line 135, in sage.rings.number_field.number_field_morphisms.NumberFieldEmbedding._call_ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/number_field/number_field_morphisms.c:3046)
  File "sage/rings/polynomial/polynomial_rational_flint.pyx", line 497, in sage.rings.polynomial.polynomial_rational_flint.Polynomial_rational_flint.__call__ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_rational_flint.cpp:6926)
  File "sage/rings/polynomial/polynomial_element.pyx", line 733, in sage.rings.polynomial.polynomial_element.Polynomial.__call__ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:8438)
  File "sage/structure/element.pyx", line 880, in sage.structure.element.Element.is_zero (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8934)
  File "sage/structure/element.pyx", line 866, in sage.structure.element.Element.__nonzero__ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:8867)
  File "sage/structure/element.pyx", line 1005, in sage.structure.element.Element.__richcmp__ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9689)
  File "sage/structure/element.pyx", line 1040, in sage.structure.element.Element._richcmp_ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/structure/element.c:9870)
  File "sage/rings/real_lazy.pyx", line 699, in sage.rings.real_lazy.LazyFieldElement._cmp_ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:8629)
  File "sage/rings/real_lazy.pyx", line 771, in sage.rings.real_lazy.LazyFieldElement.approx (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:9310)
  File "sage/rings/real_lazy.pyx", line 1638, in sage.rings.real_lazy.LazyAlgebraic.eval (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_lazy.c:17724)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6496, in sage.rings.polynomial.polynomial_element.Polynomial.roots (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:54070)
  File "/home/stottmeister/downloads/sage-7.1/local/lib/python2.7/site-packages/sage/rings/polynomial/complex_roots.py", line 258, in complex_roots
    rts = cfac.roots(multiplicities=False)
  File "sage/rings/polynomial/polynomial_element.pyx", line 6421, in sage.rings.polynomial.polynomial_element.Polynomial.roots (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:51904)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5326, in sage.rings.polynomial.polynomial_element.Polynomial._pari_ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:46962)
  File "sage/rings/polynomial/polynomial_element.pyx", line 5379, in sage.rings.polynomial.polynomial_element.Polynomial._pari_with_name (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/polynomial/polynomial_element.c:47464)
  File "sage/rings/complex_number.pyx", line 575, in sage.rings.complex_number.ComplexNumber._pari_ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/complex_number.c:6870)
  File "sage/rings/real_mpfr.pyx", line 3108, in sage.rings.real_mpfr.RealNumber._pari_ (/home/stottmeister/downloads/sage-7.1/src/build/cythonized/sage/rings/real_mpfr.c:22176)
  File "src/cysignals/signals.pyx", line 108, in cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1342)
cysignals.signals.SignalError: Segmentation fault