Generate random runner tokens

src/id.rs

@@ -0,0 +1,14 @@
+use rand::{rngs::OsRng, seq::IteratorRandom};
+
+const ID_CHARS: &str = "0123456789abcdefghijklmnopqrstuvwxyz";
+
+fn random_id(prefix: &str, length: usize) -> String {
+    prefix
+        .chars()
+        .chain((0..length).map(|_| ID_CHARS.chars().choose(&mut OsRng).unwrap()))
+        .collect()
+}
+
+pub fn random_runner_token() -> String {
+    random_id("t", 30)
+}