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We've been having errors in CI from Coveralls, when trying to upload results.
(As mentioned in this comment)
This error seems to be because our coveralls gem is pretty old and abandoned,
and probably using a TLS version that is no longer supported.
(Reference: lemurheavy/coveralls-ruby#163)
One option recommended in that issue is to switch to a different
coveralls-ruby-reborn
gem.However, given that we only use
coveralls
to upload results to the cloud,only so we can have a badge in our README reporting 100%, in the interest of
security, I think i'd rather get rid of
coveralls
altogether, and usesimplecov
directly instead, which reports the coverage when running thetests and doesn't upload them anywhere.