diff --git a/tutorials/tour-of-restate-rust/Cargo.toml b/tutorials/tour-of-restate-rust/Cargo.toml
index dbb4c433..e4869bf6 100644
--- a/tutorials/tour-of-restate-rust/Cargo.toml
+++ b/tutorials/tour-of-restate-rust/Cargo.toml
@@ -20,12 +20,12 @@ path = "src/part1/main.rs"
 
 [[bin]]
 name = "part2"
-path = "src/part1/main.rs"
+path = "src/part2/main.rs"
 
 [[bin]]
 name = "part3"
-path = "src/part1/main.rs"
+path = "src/part3/main.rs"
 
 [[bin]]
 name = "part4"
-path = "src/part1/main.rs"
+path = "src/part4/main.rs"
diff --git a/tutorials/tour-of-restate-rust/src/part2/cart_object.rs b/tutorials/tour-of-restate-rust/src/part2/cart_object.rs
index 5658999f..3e790273 100644
--- a/tutorials/tour-of-restate-rust/src/part2/cart_object.rs
+++ b/tutorials/tour-of-restate-rust/src/part2/cart_object.rs
@@ -1,3 +1,4 @@
+use std::collections::HashSet;
 use crate::checkout_service::{CheckoutRequest, CheckoutServiceClient};
 use crate::ticket_object::TicketObjectClient;
 use restate_sdk::prelude::*;
@@ -43,7 +44,7 @@ impl CartObject for CartObjectImpl {
             .service_client::<CheckoutServiceClient>()
             .handle(Json(CheckoutRequest {
                 user_id: ctx.key().parse()?,
-                tickets: vec!(String::from("seat2B")),
+                tickets: HashSet::from([String::from("seat2B")]),
             }))
             .call()
             .await?;
diff --git a/tutorials/tour-of-restate-rust/src/part2/checkout_service.rs b/tutorials/tour-of-restate-rust/src/part2/checkout_service.rs
index 4a80218e..08b5ee30 100644
--- a/tutorials/tour-of-restate-rust/src/part2/checkout_service.rs
+++ b/tutorials/tour-of-restate-rust/src/part2/checkout_service.rs
@@ -1,6 +1,4 @@
 use std::collections::HashSet;
-use crate::auxiliary::email_client::EmailClient;
-use crate::auxiliary::payment_client::PaymentClient;
 use restate_sdk::prelude::*;
 use serde::{Deserialize, Serialize};
 
@@ -21,8 +19,8 @@ pub struct CheckoutServiceImpl;
 impl CheckoutService for CheckoutServiceImpl {
     async fn handle(
         &self,
-        mut ctx: Context<'_>,
-        Json(CheckoutRequest { user_id, tickets }): Json<CheckoutRequest>,
+        _ctx: Context<'_>,
+        Json(CheckoutRequest { user_id: _, tickets: _ }): Json<CheckoutRequest>,
     ) -> Result<bool, HandlerError> {
         Ok(true)
     }
diff --git a/tutorials/tour-of-restate-rust/src/part2/ticket_object.rs b/tutorials/tour-of-restate-rust/src/part2/ticket_object.rs
index ffed55ba..71a72fc9 100644
--- a/tutorials/tour-of-restate-rust/src/part2/ticket_object.rs
+++ b/tutorials/tour-of-restate-rust/src/part2/ticket_object.rs
@@ -1,4 +1,3 @@
-use crate::auxiliary::ticket_status::TicketStatus;
 use restate_sdk::prelude::*;
 
 #[restate_sdk::object]
@@ -12,15 +11,15 @@ pub(crate) trait TicketObject {
 pub struct TicketObjectImpl;
 
 impl TicketObject for TicketObjectImpl {
-    async fn reserve(&self, ctx: ObjectContext<'_>) -> Result<bool, HandlerError> {
+    async fn reserve(&self, _ctx: ObjectContext<'_>) -> Result<bool, HandlerError> {
         Ok(true)
     }
 
-    async fn unreserve(&self, ctx: ObjectContext<'_>) -> Result<(), HandlerError> {
+    async fn unreserve(&self, _ctx: ObjectContext<'_>) -> Result<(), HandlerError> {
         Ok(())
     }
 
-    async fn mark_as_sold(&self, ctx: ObjectContext<'_>) -> Result<(), HandlerError> {
+    async fn mark_as_sold(&self, _ctx: ObjectContext<'_>) -> Result<(), HandlerError> {
         Ok(())
     }
 }
diff --git a/tutorials/tour-of-restate-rust/src/part3/cart_object.rs b/tutorials/tour-of-restate-rust/src/part3/cart_object.rs
index 8d3b16bf..b49c5f72 100644
--- a/tutorials/tour-of-restate-rust/src/part3/cart_object.rs
+++ b/tutorials/tour-of-restate-rust/src/part3/cart_object.rs
@@ -1,3 +1,4 @@
+use std::collections::HashSet;
 use crate::checkout_service::{CheckoutRequest, CheckoutServiceClient};
 use crate::ticket_object::TicketObjectClient;
 use restate_sdk::prelude::*;
@@ -34,7 +35,7 @@ impl CartObject for CartObjectImpl {
                 .await?
                 .unwrap_or_default()
                 .into_inner();
-            tickets.push(ticket_id.clone());
+            tickets.insert(ticket_id.clone());
             ctx.set("tickets", Json(tickets));
 
             ctx.object_client::<CartObjectClient>(ctx.key())
diff --git a/tutorials/tour-of-restate-rust/src/part3/checkout_service.rs b/tutorials/tour-of-restate-rust/src/part3/checkout_service.rs
index 4a80218e..08b5ee30 100644
--- a/tutorials/tour-of-restate-rust/src/part3/checkout_service.rs
+++ b/tutorials/tour-of-restate-rust/src/part3/checkout_service.rs
@@ -1,6 +1,4 @@
 use std::collections::HashSet;
-use crate::auxiliary::email_client::EmailClient;
-use crate::auxiliary::payment_client::PaymentClient;
 use restate_sdk::prelude::*;
 use serde::{Deserialize, Serialize};
 
@@ -21,8 +19,8 @@ pub struct CheckoutServiceImpl;
 impl CheckoutService for CheckoutServiceImpl {
     async fn handle(
         &self,
-        mut ctx: Context<'_>,
-        Json(CheckoutRequest { user_id, tickets }): Json<CheckoutRequest>,
+        _ctx: Context<'_>,
+        Json(CheckoutRequest { user_id: _, tickets: _ }): Json<CheckoutRequest>,
     ) -> Result<bool, HandlerError> {
         Ok(true)
     }
diff --git a/tutorials/tour-of-restate-rust/src/part4/cart_object.rs b/tutorials/tour-of-restate-rust/src/part4/cart_object.rs
index f4a3b5e5..825006e0 100644
--- a/tutorials/tour-of-restate-rust/src/part4/cart_object.rs
+++ b/tutorials/tour-of-restate-rust/src/part4/cart_object.rs
@@ -1,5 +1,4 @@
 use std::collections::HashSet;
-use std::hash::Hash;
 use crate::checkout_service::{CheckoutRequest, CheckoutServiceClient};
 use crate::ticket_object::TicketObjectClient;
 use restate_sdk::prelude::*;
diff --git a/tutorials/tour-of-restate-rust/src/part4/checkout_service.rs b/tutorials/tour-of-restate-rust/src/part4/checkout_service.rs
index 473ec9fb..83efbe2a 100644
--- a/tutorials/tour-of-restate-rust/src/part4/checkout_service.rs
+++ b/tutorials/tour-of-restate-rust/src/part4/checkout_service.rs
@@ -31,14 +31,14 @@ impl CheckoutService for CheckoutServiceImpl {
 
         let pay_client = PaymentClient::new();
         let success = ctx
-            .run(|| PaymentClient.call(&idempotency_key, total_price))
+            .run(|| pay_client.call(&idempotency_key, total_price))
             .await?;
 
         if success {
-            ctx.run(|| EmailClient.notify_user_of_payment_success(&user_id))
+            ctx.run(|| EmailClient::notify_user_of_payment_success(&user_id))
                 .await?;
         } else {
-            ctx.run(|| EmailClient.notify_user_of_payment_failure(&user_id))
+            ctx.run(|| EmailClient::notify_user_of_payment_failure(&user_id))
                 .await?;
         }
         Ok(success)