Activate some warnings

src/lib.rs

@@ -1,3 +1,14 @@
+#![forbid(unsafe_code)]
+// Rustc lint groups
+#![warn(future_incompatible)]
+#![warn(rust_2018_idioms)]
+#![warn(unused)]
+// Rustc lints
+#![warn(noop_method_call)]
+#![warn(single_use_lifetimes)]
+// Clippy lints
+#![warn(clippy::use_self)]
+
 #[cfg(feature = "tokio")]
 pub mod tokio;
 

src/tokio.rs

@@ -57,7 +57,7 @@ pub type Result<R> = result::Result<R, Error>;
 ///
 /// The migration does not need to update the `user_version` or commit the
 /// transaction.
-pub type Migration = fn(&mut Transaction, usize) -> rusqlite::Result<()>;
+pub type Migration = fn(&mut Transaction<'_>, usize) -> rusqlite::Result<()>;
 
 fn migrate(conn: &mut Connection, migrations: &[Migration]) -> rusqlite::Result<()> {
     let mut tx = conn.transaction()?;