feat: add rust-script

external/rust-script/tests/data/cargo-target-dir-env.rs

@@ -0,0 +1,13 @@
+use std::env;
+
+pub fn main() {
+    // Test that CARGO_TARGET_DIR is not set by rust-script to avoid
+    // interfering with cargo calls done by the script.
+    // See https://github.com/fornwall/rust-script/issues/27
+    let env_variable = env::var("CARGO_TARGET_DIR");
+    println!("--output--");
+    println!(
+        "{:?}",
+        matches!(env_variable, Err(env::VarError::NotPresent))
+    );
+}