diff --git a/TODO.txt b/TODO.txt
index ce3f9261..206ea5e4 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -1,13 +1,4 @@
 TODO
-* phuslu/slog
-  x get it done
-  x what's up with TestLevelVar: LevelVar unused warning?
-    Seems to happen to all handlers that don't use it.
-  - Required [Mismatch] Logged record does not match expected: Attributes: ?Any
-    Handler seems to dump JSON in a string instead of group object for some types.
-    IP data and mac (h/w) address are good examples.
-    Fix it with encoding/json magic or configure a unique warning?
-    Apply the unique warning where currently using the strFields list.
 * Discuss slog_madkins_replattr benchmark somewhere
 * Use json.Expect and reflect.DeepEqual()/assert.Equal() more often
 * Creator could have:
diff --git a/bench/tests/checks.go b/bench/tests/checks.go
index 73aee187..115a572b 100644
--- a/bench/tests/checks.go
+++ b/bench/tests/checks.go
@@ -66,24 +66,23 @@ func fields(testName string, fields ...string) VerifyFn {
 func finder(testName string, expected map[string]any) VerifyFn {
 	return func(captured []byte, logMap map[string]any, manager *warning.Manager) error {
 		logMap = getLogMap(captured, logMap, manager)
-		if badFields, strFields, err := finderDeep(expected, logMap, ""); err != nil {
+		badFields, strFields, err := finderDeep(expected, logMap, "")
+		if err != nil {
 			return fmt.Errorf("finderDeep: %w", err)
-		} else if len(badFields) > 0 || len(strFields) > 0 {
-			var fields []string
-			for _, field := range badFields {
-				test.Debugf(2, ">?>   bad %s: %v != %v\n", field, expected[field], logMap[field])
-				fields = append(fields, "!"+field)
-			}
-			for _, field := range strFields {
-				test.Debugf(2, ">?>   str %s: %v != %v\n", field, expected[field], logMap[field])
-				fields = append(fields, "?"+field)
-			}
-			text := testName + ": " + strings.Join(fields, ",")
+		}
+		if len(badFields) > 0 {
+			text := testName + ": " + strings.Join(badFields, ",")
 			manager.AddWarningFn(warning.Mismatch, text, string(captured))
-			return warning.Mismatch.ErrorExtra(text)
-		} else {
-			return nil
+		} else if manager.HasWarning(warning.Mismatch) {
+			manager.AddUnused(warning.Mismatch, string(captured))
+		}
+		if len(strFields) > 0 {
+			text := testName + ": " + strings.Join(strFields, ",")
+			manager.AddWarningFn(warning.StringAny, text, string(captured))
+		} else if manager.HasWarning(warning.StringAny) {
+			manager.AddUnused(warning.StringAny, string(captured))
 		}
+		return nil
 	}
 }
 
diff --git a/internal/warning/suggested.go b/internal/warning/suggested.go
index 3a0808ef..48939076 100644
--- a/internal/warning/suggested.go
+++ b/internal/warning/suggested.go
@@ -44,6 +44,10 @@ var (
 		The log level name is not what was expected (e.g. "WARNING" instead of "WARN").
 		This is different from the LevelCase warning which is from the right level name but the wrong character case.`)
 
+	StringAny = NewWarning(LevelSuggested, "StringAny", "Some structs are converted to strings in log records", `
+		The ^slog.JSONHandler^ converts ^Any^ objects that are ^struct^s into JSON maps.
+		Some handlers convert one or more of these into strings instead of maps.`)
+
 	TimeMillis = NewWarning(LevelSuggested, "TimeMillis", "slog.Time() logs milliseconds instead of nanoseconds", `
 		The ^slog.JSONHandler^ uses nanoseconds for ^time.Time^ but some other handlers use milliseconds.
 		This does _not_ apply to the basic ^time^ field, only attribute fields.
@@ -61,7 +65,7 @@ var (
 
 func init() {
 	// Always update this number when adding or removing Warning objects.
-	addTestCount(LevelSuggested, 9)
+	addTestCount(LevelSuggested, 10)
 }
 
 // Suggested returns an array of all LevelSuggested warnings.