[issue16715] Get rid of IOError. Use OSError instead

[Terry J. Reedy]

Terry J. Reedy added the comment:

I would wait and see if it happens gain or on other buildbots. As I am sure you know, intermittent failures, not reproducible on demand, are nasty.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16715>
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