From b3b3a61a903093cddb1e3835540de7b0d96ae822 Mon Sep 17 00:00:00 2001
From: Nadrieril
Date: Tue, 5 Mar 2019 02:33:47 +0100
Subject: Remove unused unstable features

---
 dhall/src/lib.rs    | 2 --
 dhall/src/parser.rs | 7 ++++---
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/dhall/src/lib.rs b/dhall/src/lib.rs
index e720ae1..9dbd3a6 100644
--- a/dhall/src/lib.rs
+++ b/dhall/src/lib.rs
@@ -1,6 +1,4 @@
 #![feature(box_patterns)]
-#![feature(concat_idents)]
-#![feature(transpose_result)]
 
 pub mod context;
 mod core;
diff --git a/dhall/src/parser.rs b/dhall/src/parser.rs
index 47c520e..36e1726 100644
--- a/dhall/src/parser.rs
+++ b/dhall/src/parser.rs
@@ -208,10 +208,11 @@ macro_rules! match_children {
         match_children!(@parse, $pairs $($rest)*);
     };
     (@parse, $pairs:expr, $x:ident? : $ty:ident $($rest:tt)*) => {
-        let $x = $x.map($ty).transpose();
+        let $x = $x.map($ty);
         let $x = match $x {
-            Ok(x) => x,
-            Err(e) => break Err(IterMatchError::Other(e)),
+            Some(Ok(x)) => Some(x),
+            Some(Err(e)) => break Err(IterMatchError::Other(e)),
+            None => None,
         };
         match_children!(@parse, $pairs $($rest)*);
     };
-- 
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