From 5db6258ef60bbbb3d697ea0242ac6272c5e750f3 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 22 Mar 2021 01:44:50 +0000
Subject: [PATCH] traits: Sprinkle another Sync

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/gamestate.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gamestate.rs b/src/gamestate.rs
index 24d61865..237e1d6f 100644
--- a/src/gamestate.rs
+++ b/src/gamestate.rs
@@ -99,7 +99,7 @@ impl_downcast!(PieceXData);
 
 #[enum_dispatch]
 #[dyn_upcast]
-pub trait OutlineTrait: Debug + Send + 'static {
+pub trait OutlineTrait: Debug + Sync + Send + 'static {
   fn outline_path(&self, scale: f64) -> Result<Html, IE>;
   fn surround_path(&self) -> Result<Html, IE> {
     self.outline_path(SELECT_SCALE)
-- 
2.30.2