From 45ad60d05ad904e1a3de1089480a614fcd4e90dd Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Thu, 23 May 2024 15:53:28 +0200
Subject: [PATCH] Copy core/alloc check-cfg message also in std

---
 library/std/Cargo.toml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/library/std/Cargo.toml b/library/std/Cargo.toml
index db4aea6a1ea..e56f03808b3 100644
--- a/library/std/Cargo.toml
+++ b/library/std/Cargo.toml
@@ -100,6 +100,9 @@ test = true
 
 [lints.rust.unexpected_cfgs]
 level = "warn"
+# x.py uses beta cargo, so `check-cfg` entries do not yet take effect
+# for rust-lang/rust. But for users of `-Zbuild-std` it does.
+# The unused warning is waiting for rust-lang/cargo#13925 to reach beta.
 check-cfg = [
     'cfg(bootstrap)',
     'cfg(target_arch, values("xtensa"))',