There is a specific POSIX error "EIO" which seems to be the "general
purpose we don't know what went wrong but its probably bad" exception.
Our investigations in #855 resulted in the conclusion that it is likely
due to some sort of filesystem corruption or something like that.
Either way, it is annoying many people, so we need to prevent it or
ignore it, rather than prompting the user to submit a bug report.
After much investigation it was unable to be reproduced other than by
one of the original bug reporters. As such, this change ignores it.
Unfortunately Java `IOException`s don't have an API for getting the
errno of a POSIX IO error. Thus, this change results to parsing the
exception message instead :(
Fixes#855.
dacebceff6