This commit makes the ErrorKind enum extensible by adding a __Nonexhaustive variant. Callers should use this as a hint that exhaustive case analysis isn't possible in a stable way since new variants may be added in the future without a semver bump.
This commit makes the ErrorKind enum extensible by adding a __Nonexhaustive variant. Callers should use this as a hint that exhaustive case analysis isn't possible in a stable way since new variants may be added in the future without a semver bump.