Structural equality — two JsonFailure values are equal iff they are the same case with the same arguments (DecodingFailure falls back to reference equality inside DecodeFailed via the circe-provided equals).
Structural equality — two JsonFailure values are equal iff they are the same case with the same arguments (DecodingFailure falls back to reference equality inside DecodeFailed via the circe-provided equals).
Required for Eq[Chain[JsonFailure]] to be summonable at specs2-=== call sites.