From ee414707be0d4b6f0f109d0a85e4d10651e4aa2c Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sat, 30 Dec 2023 16:45:08 -0800
Subject: [PATCH] RUSTC must be set by Cargo for build script

---
 build.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build.rs b/build.rs
index f1c1394..d515e86 100644
--- a/build.rs
+++ b/build.rs
@@ -146,7 +146,7 @@ fn compile_probe(rustc_bootstrap: bool) -> bool {
 }
 
 fn rustc_minor_version() -> Option<u32> {
-    let rustc = env::var_os("RUSTC")?;
+    let rustc = cargo_env_var("RUSTC");
     let output = Command::new(rustc).arg("--version").output().ok()?;
     let version = str::from_utf8(&output.stdout).ok()?;
     let mut pieces = version.split('.');