From b9909cef3d1d69f1412712f0953ecc6d37aee06c Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sun, 15 Dec 2019 19:52:59 -0800
Subject: [PATCH] Revert "Remove never_type feature gate"

This reverts commit 533fb9cc443eb48604250c14a4d70648752ad17b.
---
 serde/src/lib.rs             | 2 +-
 test_suite/tests/test_de.rs  | 1 +
 test_suite/tests/test_ser.rs | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/serde/src/lib.rs b/serde/src/lib.rs
index 4e50604a..26a57fe7 100644
--- a/serde/src/lib.rs
+++ b/serde/src/lib.rs
@@ -82,7 +82,7 @@
 // discussion of these features please refer to this issue:
 //
 //    https://github.com/serde-rs/serde/issues/812
-#![cfg_attr(feature = "unstable", feature(specialization))]
+#![cfg_attr(feature = "unstable", feature(specialization, never_type))]
 #![allow(unknown_lints, bare_trait_objects, deprecated)]
 #![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
 #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
diff --git a/test_suite/tests/test_de.rs b/test_suite/tests/test_de.rs
index 5fe6fd8a..025d87b0 100644
--- a/test_suite/tests/test_de.rs
+++ b/test_suite/tests/test_de.rs
@@ -1,4 +1,5 @@
 #![allow(clippy::decimal_literal_representation, clippy::unreadable_literal)]
+#![cfg_attr(feature = "unstable", feature(never_type))]
 
 use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
 use std::default::Default;
diff --git a/test_suite/tests/test_ser.rs b/test_suite/tests/test_ser.rs
index 05dafc9c..a62569af 100644
--- a/test_suite/tests/test_ser.rs
+++ b/test_suite/tests/test_ser.rs
@@ -1,4 +1,5 @@
 #![allow(clippy::unreadable_literal)]
+#![cfg_attr(feature = "unstable", feature(never_type))]
 
 use std::cell::RefCell;
 use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};