Description: use unqualified rustc none below CARGO_HOME
 rustc executable below CARGO_HOME is an artifact of rustup,
 unavailablæe in Debian.packaged rustc.
Author: Blair Noctis <ncts@debian.org>
Bug: https://github.com/mozilla/sccache/issues/2303
Last-Update: 2025-01-11
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
--- a/src/compiler/rust.rs
+++ b/src/compiler/rust.rs
@@ -3250,16 +3250,18 @@
     #[test]
     fn test_rlib_dep_reader_call() {
         let cargo_home = std::env::var("CARGO_HOME");
-        assert!(cargo_home.is_ok());
+        //assert!(cargo_home.is_ok());
 
         let mut env_vars = vec![];
         if let Some(rustup_home) = std::env::var_os("RUSTUP_HOME") {
             env_vars.push(("RUSTUP_HOME".into(), rustup_home));
         }
 
-        let mut rustc_path = PathBuf::from(cargo_home.unwrap());
-        rustc_path.push("bin");
-        rustc_path.push("rustc");
+        let rustc_path = cargo_home.ok()
+            .map(PathBuf::from)
+            .map(|mut path| { path.push("bin"); path.push("rustc"); path })
+            .map(|path| if path.exists() { path } else { "rustc".into() })
+            .unwrap_or_else(|| "rustc".into());
 
         let rlib_dep_reader = RlibDepReader::new_with_check(rustc_path, &env_vars);
         let is_ok = rlib_dep_reader.is_ok();