Backport PR #32242 on branch 1.0.x (BUG: Fixed bug, where pandas._libs.lib.maybe_convert_objects function improperly handled arrays with bools and NaNs)

[meeseeksmachine]

Backport PR #32242: BUG: Fixed bug, where pandas._libs.lib.maybe_convert_objects function improperly handled arrays with bools and NaNs

[TomAugspurger]

I think the azure failure is from https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=30283&view=logs&j=5291ec4e-9543-503b-43ce-895cf0e06ba3&t=ba0a2b35-e1f8-54df-fd66-2b9fde6f4b1f&l=38. statsmodel's DNS service was having issues earlier today, perhaps that's related.

[TomAugspurger]

The failures at https://travis-ci.org/pandas-dev/pandas/jobs/660210730?utm_medium=notification&utm_source=github_status are more concerning.

[WillAyd]

Hmm what's the point of that repo? Looks like the travis config needs updating (still using Python 3.5?) maybe a conflict in requirements is responsible

[jorisvandenbossche]

The failures at https://travis-ci.org/pandas-dev/pandas/jobs/660210730?utm_medium=notification&utm_source=github_status are more concerning.

That points to a green build ?

[TomAugspurger]

Sorry, I restarted it :)

[TomAugspurger]

Going to merge this, since all the CI failures should have resolved themselves.