15 worst offenders in 8.5.rc0:
['src/sage/dynamics/arithmetic_dynamics/wehlerK3.py # 21 doctests failed',
'src/sage/matroids/matroid.pyx # 21 doctests failed',
'src/sage/rings/polynomial/multi_polynomial_ideal.py # 21 doctests failed',
'src/sage/homology/simplicial_complex.py # 22 doctests failed',
'src/sage/sandpiles/sandpile.py # 22 doctests failed',
'src/sage/numerical/linear_tensor_element.pyx # 23 doctests failed',
'src/sage/misc/decorators.py # 28 doctests failed',
'src/sage/numerical/linear_tensor_constraints.py # 28 doctests failed',
'src/sage/graphs/graph.py # 30 doctests failed',
'src/sage/numerical/linear_functions.pyx # 30 doctests failed',
'src/sage/schemes/riemann_surfaces/riemann_surface.py # 36 doctests failed',
'src/sage/numerical/mip.pyx # 47 doctests failed',
'src/doc/en/thematic_tutorials/sandpile.rst # 49 doctests failed',
'src/sage/misc/explain_pickle.py # 70 doctests failed',
'src/sage/graphs/generic_graph.py # 74 doctests failed']
