diff --git a/src/configuration.rs b/src/configuration.rs
index f50b48b..ba409cc 100644
--- a/src/configuration.rs
+++ b/src/configuration.rs
@@ -41,7 +41,7 @@ impl DatabaseSettings {
         PgConnectOptions::new()
             .host(&self.host)
             .username(&self.username)
-            .password(&self.password.expose_secret())
+            .password(self.password.expose_secret())
             .port(self.port)
             .ssl_mode(ssl_mode)
     }
diff --git a/src/domain/subscriber_name.rs b/src/domain/subscriber_name.rs
index b3c6540..f3c0e77 100644
--- a/src/domain/subscriber_name.rs
+++ b/src/domain/subscriber_name.rs
@@ -72,7 +72,7 @@ mod tests {
 
     #[test]
     fn names_containing_an_invalid_character_are_rejected() {
-        for name in vec!['/', '(', ')', '"', '<', '>', '\\', '{', '}'] {
+        for name in &['/', '(', ')', '"', '<', '>', '\\', '{', '}'] {
             let name = name.to_string();
             assert_err!(SubscriberName::parse(name));
         }
diff --git a/tests/api/helpers.rs b/tests/api/helpers.rs
index 672728c..f88784c 100644
--- a/tests/api/helpers.rs
+++ b/tests/api/helpers.rs
@@ -62,8 +62,8 @@ impl TestApp {
             confirmation_link
         };
 
-        let html = get_link(&body["HtmlBody"].as_str().unwrap());
-        let plain_text = get_link(&body["TextBody"].as_str().unwrap());
+        let html = get_link(body["HtmlBody"].as_str().unwrap());
+        let plain_text = get_link(body["TextBody"].as_str().unwrap());
         ConfirmationLinks { html, plain_text }
     }
 }
diff --git a/tests/api/subscriptions.rs b/tests/api/subscriptions.rs
index b659024..efd4551 100644
--- a/tests/api/subscriptions.rs
+++ b/tests/api/subscriptions.rs
@@ -78,7 +78,7 @@ async fn subscribe_sends_a_confirmation_email_with_a_link() {
 
     // Assert
     let email_request = &app.email_server.received_requests().await.unwrap()[0];
-    let confirmation_links = app.get_confirmation_links(&email_request);
+    let confirmation_links = app.get_confirmation_links(email_request);
 
     // The two links should be identical
     assert_eq!(confirmation_links.html, confirmation_links.plain_text);
diff --git a/tests/api/subscriptions_confirm.rs b/tests/api/subscriptions_confirm.rs
index 23709bc..cda5de1 100644
--- a/tests/api/subscriptions_confirm.rs
+++ b/tests/api/subscriptions_confirm.rs
@@ -30,7 +30,7 @@ async fn the_link_returned_by_subscribe_returns_a_200_if_called() {
 
     app.post_subscriptions(body.into()).await;
     let email_request = &app.email_server.received_requests().await.unwrap()[0];
-    let confirmation_links = app.get_confirmation_links(&email_request);
+    let confirmation_links = app.get_confirmation_links(email_request);
 
     // Act
     let response = reqwest::get(confirmation_links.html).await.unwrap();
@@ -53,7 +53,7 @@ async fn clicking_on_the_confirmation_link_confirms_a_subscriber() {
 
     app.post_subscriptions(body.into()).await;
     let email_request = &app.email_server.received_requests().await.unwrap()[0];
-    let confirmation_links = app.get_confirmation_links(&email_request);
+    let confirmation_links = app.get_confirmation_links(email_request);
 
     // Act
     reqwest::get(confirmation_links.html)