chore: checkpoint before Python removal

vendor/schemars/tests/time.rs

@@ -0,0 +1,16 @@
+mod util;
+use schemars::JsonSchema;
+use std::time::{Duration, SystemTime};
+use util::*;
+
+#[allow(dead_code)]
+#[derive(JsonSchema)]
+struct MyStruct {
+    duration: Duration,
+    time: SystemTime,
+}
+
+#[test]
+fn duration_and_systemtime() -> TestResult {
+    test_default_generated_schema::<MyStruct>("duration_and_systemtime")
+}