From a81968af3caea9528e8e935a9a19ccad19a16778 Mon Sep 17 00:00:00 2001
From: ppc <hjiayz@gmail.com>
Date: Thu, 2 Jan 2020 08:53:12 +0800
Subject: [PATCH] Turn panic to error in SystemTime serialization

---
 serde/src/ser/impls.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/serde/src/ser/impls.rs b/serde/src/ser/impls.rs
index 803c739e..0a6c3d46 100644
--- a/serde/src/ser/impls.rs
+++ b/serde/src/ser/impls.rs
@@ -616,7 +616,7 @@ impl Serialize for SystemTime {
         use super::SerializeStruct;
         let duration_since_epoch = self
             .duration_since(UNIX_EPOCH)
-            .expect("SystemTime must be later than UNIX_EPOCH");
+            .map_err(|_|S::Error::custom("SystemTime must be later than UNIX_EPOCH"))?;
         let mut state = try!(serializer.serialize_struct("SystemTime", 2));
         try!(state.serialize_field("secs_since_epoch", &duration_since_epoch.as_secs()));
         try!(state.serialize_field("nanos_since_epoch", &duration_since_epoch.subsec_nanos()));