From 9add5812e219b86b1ad422876a00d8922a1dc618 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sat, 23 Jan 2021 14:56:03 -0800
Subject: [PATCH] Update track_caller cfg link to show what version it's in

---
 serde_test/build.rs | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/serde_test/build.rs b/serde_test/build.rs
index 1db68e5d..f3e3a78e 100644
--- a/serde_test/build.rs
+++ b/serde_test/build.rs
@@ -11,11 +11,8 @@ fn main() {
         None => return,
     };
 
-    // Check ability to use #[track_caller]:
-    // https://doc.rust-lang.org/reference/attributes/codegen.html#the-track_caller-attribute
-    //
-    // Perhaps sometime it will be possible to replace by built-in `version` attribute:
-    // https://github.com/rust-lang/rust/issues/64796
+    // #[track_caller] stabilized in Rust 1.46:
+    // https://blog.rust-lang.org/2020/08/27/Rust-1.46.0.html#track_caller
     if minor >= 46 {
         println!("cargo:rustc-cfg=has_track_caller");
     }