Clarify that ErrorInfoValue is a NotComparableSkyValue because we don't expect equality, not because there's no implementation.
@@ -179,7 +179,7 @@ public abstract class ValueWithMetadata implements SkyValue {
/**
* Implementation of {@link ValueWithMetadata} for the error case.
*
- * ErorInfo does not override equals(), so it may as well be marked NotComparableSkyValue.
+ * <p>Mark NotComparableSkyValue because it's unlikely that re-evaluation gives the same error.
*/
private static final class ErrorInfoValue extends ValueWithMetadata
implements NotComparableSkyValue {
