diff --git a/rust/src/components/inventory.rs b/rust/src/components/inventory.rs
index f5083f6..5e9e529 100644
--- a/rust/src/components/inventory.rs
+++ b/rust/src/components/inventory.rs
@@ -14,14 +14,14 @@ impl Inventory {
             div id="pkglist-item-manager" {
                 div ."p-8" ."grid" ."grid-cols-4" ."gap-3" {
                     div ."col-span-2" {
-                        ({<InventoryCategoryList as Into<Markup>>::into(InventoryCategoryList::build(&categories).await?)})
+                        ({<InventoryCategoryList as Into<Markup>>::into(InventoryCategoryList::build(&categories))})
                     }
                     div ."col-span-2" {
                         h1 ."text-2xl" ."mb-5" ."text-center" { "Items" }
                         @if state.active_category_id.is_some() {
-                            ({<InventoryItemList as Into<Markup>>::into(InventoryItemList::build(categories.iter().find(|category| category.active).unwrap().items()).await?)})
+                            ({<InventoryItemList as Into<Markup>>::into(InventoryItemList::build(categories.iter().find(|category| category.active).unwrap().items()))})
                         }
-                        ({<InventoryNewItemForm as Into<Markup>>::into(InventoryNewItemForm::build(&state, &categories).await?)})
+                        ({<InventoryNewItemForm as Into<Markup>>::into(InventoryNewItemForm::build(&state, &categories))})
 
                     }
                 }
@@ -43,10 +43,10 @@ pub struct InventoryCategoryList {
 }
 
 impl InventoryCategoryList {
-    pub async fn build(categories: &Vec<Category>) -> Result<Self, Error> {
+    pub fn build(categories: &Vec<Category>) -> Self {
         let biggest_category_weight: u32 = categories
             .iter()
-            .map(|category| category.total_weight())
+            .map(Category::total_weight)
             .max()
             .unwrap_or(1);
 
@@ -116,8 +116,8 @@ impl InventoryCategoryList {
                                             format!(
                                                 "width: {width}%;position:absolute;left:0;bottom:0;right:0;",
                                                 width=(
-                                                    category.total_weight() as f32
-                                                    / biggest_category_weight as f32
+                                                    f64::from(category.total_weight())
+                                                    / f64::from(biggest_category_weight)
                                                     * 100.0
                                                 )
                                             )
@@ -131,7 +131,7 @@ impl InventoryCategoryList {
                             }
                             td ."border" ."p-0" ."m-0" {
                                 p ."p-2" ."m-2" {
-                                    (categories.iter().map(|category| category.total_weight()).sum::<u32>().to_string())
+                                    (categories.iter().map(Category::total_weight).sum::<u32>().to_string())
                                 }
                             }
                         }
@@ -140,7 +140,7 @@ impl InventoryCategoryList {
             }
         );
 
-        Ok(Self { doc })
+        Self { doc }
     }
 }
 
@@ -155,7 +155,7 @@ pub struct InventoryItemList {
 }
 
 impl InventoryItemList {
-    pub async fn build(items: &Vec<Item>) -> Result<Self, Error> {
+    pub fn build(items: &Vec<Item>) -> Self {
         let biggest_item_weight: u32 = items.iter().map(|item| item.weight).max().unwrap_or(1);
         let doc = html!(
             div #items {
@@ -196,7 +196,7 @@ impl InventoryItemList {
                                         position:absolute;
                                         left:0;
                                         bottom:0;
-                                        right:0;", width=(item.weight as f32 / biggest_item_weight as f32 * 100.0))) {}
+                                        right:0;", width=(f64::from(item.weight) / f64::from(biggest_item_weight) * 100.0))) {}
                                     }
                                     td
                                         ."border"
@@ -222,7 +222,7 @@ impl InventoryItemList {
             }
         );
 
-        Ok(Self { doc })
+        Self { doc }
     }
 }
 
@@ -237,7 +237,7 @@ pub struct InventoryNewItemForm {
 }
 
 impl InventoryNewItemForm {
-    pub async fn build(state: &ClientState, categories: &Vec<Category>) -> Result<Self, Error> {
+    pub fn build(state: &ClientState, categories: &Vec<Category>) -> Self {
         let doc = html!(
 
             form
@@ -335,7 +335,7 @@ impl InventoryNewItemForm {
             }
         );
 
-        Ok(Self { doc })
+        Self { doc }
     }
 }
 
diff --git a/rust/src/components/mod.rs b/rust/src/components/mod.rs
index c5e4537..122a035 100644
--- a/rust/src/components/mod.rs
+++ b/rust/src/components/mod.rs
@@ -19,7 +19,7 @@ pub enum TopLevelPage {
 }
 
 impl Root {
-    pub fn build(body: Markup, active_page: TopLevelPage) -> Self {
+    pub fn build(body: Markup, active_page: &TopLevelPage) -> Self {
         let doc = html!(
             (DOCTYPE)
             html {
diff --git a/rust/src/main.rs b/rust/src/main.rs
index 424b715..127d448 100644
--- a/rust/src/main.rs
+++ b/rust/src/main.rs
@@ -103,7 +103,7 @@ async fn main() -> Result<(), sqlx::Error> {
 async fn root() -> (StatusCode, Html<String>) {
     (
         StatusCode::OK,
-        Html::from(Root::build(Home::build().into(), TopLevelPage::None).into_string()),
+        Html::from(Root::build(Home::build().into(), &TopLevelPage::None).into_string()),
     )
 }
 
@@ -133,7 +133,7 @@ async fn inventory(
 
     let mut categories = query("SELECT id,name,description FROM inventoryitemcategories")
         .fetch(&state.database_pool)
-        .map_ok(|row| row.try_into())
+        .map_ok(std::convert::TryInto::try_into)
         .try_collect::<Vec<Result<Category, models::Error>>>()
         .await
         // we have two error handling lines here. these are distinct errors
@@ -166,7 +166,7 @@ async fn inventory(
                     .await
                     .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, Html::from(e.to_string())))?
                     .into(),
-                TopLevelPage::Inventory,
+                &TopLevelPage::Inventory,
             )
             .into_string(),
         ),
@@ -178,7 +178,7 @@ async fn trips(
 ) -> Result<(StatusCode, Html<String>), (StatusCode, Html<String>)> {
     let trips = query("SELECT * FROM trips")
         .fetch(&state.database_pool)
-        .map_ok(|row| row.try_into())
+        .map_ok(std::convert::TryInto::try_into)
         .try_collect::<Vec<Result<Trip, models::Error>>>()
         .await
         // we have two error handling lines here. these are distinct errors
@@ -192,7 +192,7 @@ async fn trips(
 
     Ok((
         StatusCode::OK,
-        Html::from(Root::build(TripList::build(trips).into(), TopLevelPage::Trips).into_string()),
+        Html::from(Root::build(TripList::build(trips).into(), &TopLevelPage::Trips).into_string()),
     ))
 }
 
diff --git a/rust/src/models.rs b/rust/src/models.rs
index f91eba3..7a94434 100644
--- a/rust/src/models.rs
+++ b/rust/src/models.rs
@@ -17,10 +17,10 @@ impl fmt::Display for Error {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
             Self::SqlError { description } => {
-                write!(f, "SQL error: {}", description)
+                write!(f, "SQL error: {description}")
             }
             Self::UuidError { description } => {
-                write!(f, "UUID error: {}", description)
+                write!(f, "UUID error: {description}")
             }
         }
     }
@@ -29,7 +29,7 @@ impl fmt::Display for Error {
 impl fmt::Debug for Error {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         // defer to Display
-        write!(f, "SQL error: {}", self)
+        write!(f, "SQL error: {self}")
     }
 }
 
@@ -129,7 +129,7 @@ impl<'a> Category {
             id = self.id
         ))
         .fetch(&pool)
-        .map_ok(|row| row.try_into())
+        .map_ok(std::convert::TryInto::try_into)
         .try_collect::<Vec<Result<Item, Error>>>()
         .await?
         .into_iter()