work around RAs RUSTC_WRAPPER hack

build.rs

@@ -70,15 +70,9 @@ fn compile_probe() -> Option<ExitStatus> {
     let probefile = Path::new(&out_dir).join("probe.rs");
     fs::write(&probefile, PROBE).ok()?;
 
-    // Make sure to pick up Cargo rustc configuration.
-    let mut cmd = if let Some(wrapper) = env::var_os("RUSTC_WRAPPER") {
-        let mut cmd = Command::new(wrapper);
-        // The wrapper's first argument is supposed to be the path to rustc.
-        cmd.arg(rustc);
-        cmd
-    } else {
-        Command::new(rustc)
-    };
+    // Deliberately ignoring RUSTC_WRAPPER to work around
+    // <https://github.com/rust-lang/rust-analyzer/issues/12973>.
+    let mut cmd = Command::new(rustc);
 
     cmd.stderr(Stdio::null())
         .arg("--edition=2018")