Shutdown IO queue when file can't be opened #471
Merged
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If any errors happen while processing IO (including
errors opening the destination file), we should shutdown
the IO queue.
As part of this change I added an integration test. This also
demonstrated an issue with python3 retrying socket.errors because
they're now aliased to OSErrors. I updated the compat module
to give us the appropriate "something went wrong on the socket"
exception based on python version.
Fixes #367.
cc @kyleknap @mtdowling @rayluo @JordonPhillips