Use stable 'parking_lot::const_mutex()' in todo.

examples/todo/Cargo.toml

@@ -14,7 +14,7 @@ diesel_migrations = "1.3"
 log = "0.4"
 
 [dev-dependencies]
-parking_lot = { version = "0.10", features = ["nightly"] }
+parking_lot = "0.11"
 rand = "0.6"
 
 [dependencies.rocket_contrib]

examples/todo/src/task.rs

@@ -13,8 +13,8 @@ mod schema {
 use self::schema::tasks;
 use self::schema::tasks::dsl::{tasks as all_tasks, completed as task_completed};
 
-#[table_name="tasks"]
 #[derive(Serialize, Queryable, Insertable, Debug, Clone)]
+#[table_name="tasks"]
 pub struct Task {
     pub id: Option<i32>,
     pub description: String,

examples/todo/src/tests.rs

@@ -2,7 +2,7 @@ extern crate parking_lot;
 extern crate rand;
 
 use super::task::Task;
-use self::parking_lot::Mutex;
+use self::parking_lot::{Mutex, const_mutex};
 use self::rand::{Rng, thread_rng, distributions::Alphanumeric};
 
 use rocket::local::Client;
@@ -11,7 +11,7 @@ use rocket::http::{Status, ContentType};
 // We use a lock to synchronize between tests so DB operations don't collide.
 // For now. In the future, we'll have a nice way to run each test in a DB
 // transaction so we can regain concurrency.
-static DB_LOCK: Mutex<()> = Mutex::new(());
+static DB_LOCK: Mutex<()> = const_mutex(());
 
 macro_rules! run_test {
     (|$client:ident, $conn:ident| $block:expr) => ({