Dynamic (#77)

tests/dynamic_fixtures/class_method/rust/benign.rs

@@ -0,0 +1,14 @@
+// Phase 19 (Track M.1) — class-method benign control for Rust.
+
+#[derive(Default)]
+pub struct UserService;
+
+impl UserService {
+    pub fn run(&self, input: &str) -> String {
+        let out = std::process::Command::new("true")
+            .arg(input)
+            .output()
+            .expect("exec");
+        String::from_utf8_lossy(&out.stdout).into_owned()
+    }
+}