Fix clippy warnings

src/database/database.rs

@@ -7,5 +7,5 @@ pub fn connect() -> PgConnection{
     dotenv().ok();
 
     let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set!");
-    PgConnection::establish(&database_url).expect(&format!("Error connecting to {}", database_url))
-}
+    PgConnection::establish(&database_url).unwrap_or_else(|_| panic!("Error connecting to {}", database_url))
+}