From aa755b9fb5afbb229c61479ae0f8636901ec499c Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 3 Oct 2020 00:24:17 +0100
Subject: [PATCH] use fehler here

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/api.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/api.rs b/src/api.rs
index 051b2bf1..8acee6c3 100644
--- a/src/api.rs
+++ b/src/api.rs
@@ -320,8 +320,9 @@ fn api_pin(form : Json<ApiPiece<ApiPiecePin>>) -> impl response::Responder<'stat
   api_piece_op(form)
 }
 impl ApiPieceOp for ApiPiecePin {
+  #[throws(ApiPieceOpError)]
   fn op(&self, gs: &mut GameState, player: PlayerId, piece: PieceId,
-        p: &dyn Piece, lens: &dyn Lens) -> Result<PieceUpdateFromOp,ApiPieceOpError> {
+        p: &dyn Piece, lens: &dyn Lens) -> PieceUpdateFromOp {
     let pc = gs.pieces.byid_mut(piece).unwrap();
     let pl = gs.players.byid(player).unwrap();
     pc.pinned = self.0;
@@ -332,8 +333,8 @@ impl ApiPieceOp for ApiPiecePin {
       if pc.pinned { "pinned" } else { "unpinned" },
       p.describe_pri(&lens.log_pri(piece, pc)).0
     ))}];
-    Ok((WhatResponseToClientOp::Predictable,
-     update, logents))
+    (WhatResponseToClientOp::Predictable,
+     update, logents)
   }
 }
 
-- 
2.30.2