From 6f2359c36d57db4fe04b440caa94f462279ea971 Mon Sep 17 00:00:00 2001
From: Martin von Zweigbergk <martinvonz@google.com>
Date: Fri, 4 Nov 2022 23:46:39 -0700
Subject: [PATCH] lib: remove ineffective enabling of `map_first_last`

If I'm reading this attribute correctly, it says that if the
`map_first_last` feature is enabled, then we should enable the
`map_first_last` feature, which seems like it would not have any
effect. We started getting warnings from the nightly compiler about
this line because it tries to enable a feature that's stable in that
version.
---
 lib/src/lib.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/src/lib.rs b/lib/src/lib.rs
index 0e8b4d0b1..60e70c26a 100644
--- a/lib/src/lib.rs
+++ b/lib/src/lib.rs
@@ -13,7 +13,6 @@
 // limitations under the License.
 
 #![deny(unused_must_use)]
-#![cfg_attr(feature = "map_first_last", feature(map_first_last))]
 
 pub mod backend;
 pub mod commit;