It's great to have statistics, but assert is too big of a hammer. We don't need
to crash due to the lack of it, and can try our best to continue.
We currently have a problem (described in 265), in which we, for some reason,
fail to read the Statistics file. Throwing an exception will still cause us to
fail to boot, but at least it will be more informative.
Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>
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