Travis CI: Why does enabling sudo cause the tests to fail?

[cclauss]

Demonstrated: #217 Output: https://travis-ci.org/RaRe-Technologies/smart_open/builds/413337196

Blocks #215

[menshikh-iv]

@cclauss I think that's a question to boto3 team, can you submit an issue to https://github.com/boto/boto3?

[cclauss]

https://github.com/boto/boto3/blob/develop/.travis.yml#L23-L25

[menshikh-iv]

@cclauss That's not an answer to the question "why this happens", I see that it works in the boto3 repo, but this is different way of installation (we using PyPI, boto3 use boto3 repo).