Workaround for old android not having echo

Author: ChrisDenton

library/std/src/process/tests.rs

@@ -585,7 +585,14 @@ fn run_canonical_bat_script() {
 
 #[test]
 fn terminate_exited_process() {
-    let mut p = known_command().arg("hello").spawn().unwrap();
+    let mut cmd = if cfg!(target_os = "android") {
+        let mut p = shell_cmd();
+        p.args(&["-c", "true"]);
+        p
+    } else {
+        known_command()
+    };
+    let mut p = cmd.stdout(Stdio::null()).spawn().unwrap();
     p.wait().unwrap();
     assert!(p.kill().is_ok());
     assert!(p.kill().is_ok());