test_marginal is flakey

[twiecki]

pymc_experimental/tests/test_marginal_model.py::test_marginalized_deterministic_and_potential - AssertionError: 
Arrays are not almost equal to 7 decimals

Mismatched elements: 2 / 5 (40%)
Max absolute difference: 2.3841858e-07
Max relative difference: 9.66977e-08
 x: array([ 1.6125156,  2.3487637,  2.4792917, -1.0471407,  2.4656074],
      dtype=float32)
 y: array([ 1.6125154,  2.3487637,  2.4792914, -1.0471407,  2.4656076],
      dtype=float32)
FAILED pymc_experimental/tests/distributions/test_continuous.py::TestGenExtremeClass::test_logcdf - AssertionError: 
Arrays are not almost equal to 2 decimals
{'mu': array(0.01, dtype=float32), 'sigma': array(1., dtype=float32), 'xi': array(0.99, dtype=float32), 'value': array(-1., dtype=float32)}
Mismatched elements: 1 / 1 (100%)
Max absolute difference: 1.86426127
Max relative difference: 0.00016986
 x: array(-10973.14, dtype=float32)
 y: array(-10975.01)