Vendor dependencies for 0.3.0 release

vendor/sysinfo/test_bin/main.rs

@@ -0,0 +1,25 @@
+// Does nothing and just exits after waiting for 30 seconds.
+
+use std::process::{Child, Command};
+
+fn maybe_start_child(last: String, args: &[String]) -> Option<Child> {
+    if last == "1" {
+        let mut cmd = Command::new(&args[0]);
+        for arg in &args[1..] {
+            cmd.arg(arg);
+        }
+        Some(cmd.spawn().expect("failed to run command"))
+    } else {
+        None
+    }
+}
+
+fn main() {
+    let mut args: Vec<String> = std::env::args().collect();
+    let child = args.pop().and_then(|last| maybe_start_child(last, &args));
+    if child.is_some() {
+        std::thread::sleep(std::time::Duration::from_secs(3));
+    } else {
+        std::thread::sleep(std::time::Duration::from_secs(30));
+    }
+}