CI: py 3.10 build failing
@seberg this build is using numpy 1.22dev, looks like a bunch of the failures are raising in `np.iinfo(np.int64).max`

```
    return np.iinfo(np.int64).max
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <[AttributeError("'iinfo' object has no attribute 'kind'") raised in repr()] iinfo object at 0x7f986b9aa830>
int_type = <class 'numpy.int64'>

    def __init__(self, int_type):
        try:
            self.dtype = numeric.dtype(int_type)
        except TypeError:
>           self.dtype = numeric.dtype(type(int_type))
E           TypeError: 'numpy.dtype[bool_]' object is not callable

/opt/hostedtoolcache/Python/3.10.0-beta.2/x64/lib/python3.10/site-packages/numpy/core/getlimits.py:518: TypeError
```