diff --git a/milli/src/fields_ids_map/global.rs b/milli/src/fields_ids_map/global.rs
index 2b948b377..32aefbfdf 100644
--- a/milli/src/fields_ids_map/global.rs
+++ b/milli/src/fields_ids_map/global.rs
@@ -62,10 +62,6 @@ impl LocalFieldsIdsMap {
     fn metadata(&self, id: FieldId) -> Option<Metadata> {
         self.metadata.get(&id).copied()
     }
-
-    fn iter(&self) -> impl Iterator<Item = (FieldId, &str, Metadata)> {
-        self.ids_names.iter().map(|(k, v)| (*k, v.as_str(), self.metadata.get(k).copied().unwrap()))
-    }
 }
 
 impl<'indexing> GlobalFieldsIdsMap<'indexing> {
diff --git a/milli/src/fields_ids_map/metadata.rs b/milli/src/fields_ids_map/metadata.rs
index 8198bd415..54fdc7b4b 100644
--- a/milli/src/fields_ids_map/metadata.rs
+++ b/milli/src/fields_ids_map/metadata.rs
@@ -158,8 +158,7 @@ impl MetadataBuilder {
         let localized_attributes_rule_id = self
             .localized_attributes
             .iter()
-            .map(|v| v.iter())
-            .flatten()
+            .flat_map(|v| v.iter())
             .position(|rule| rule.match_str(field))
             .map(|id| NonZeroU16::new(id.saturating_add(1).try_into().unwrap()).unwrap());
 
diff --git a/milli/src/prompt/document.rs b/milli/src/prompt/document.rs
index d6aadce65..28c0f47af 100644
--- a/milli/src/prompt/document.rs
+++ b/milli/src/prompt/document.rs
@@ -520,7 +520,7 @@ impl<'doc> ValueView for ParseableValue<'doc> {
             Value::Null => ValueView::to_kstr(&LiquidValue::Nil),
             Value::Bool(v) => ValueView::to_kstr(v),
             Value::Number(_number) => self.render().to_string().into(),
-            Value::String(s) => KStringCow::from_ref(*s),
+            Value::String(s) => KStringCow::from_ref(s),
             Value::Array(raw_vec) => ParseableArray::as_parseable(raw_vec).to_kstr(),
             Value::Object(raw_map) => ParseableMap::as_parseable(raw_map).to_kstr(),
         }
@@ -577,10 +577,7 @@ impl<'doc> ValueView for ParseableValue<'doc> {
 
     fn is_scalar(&self) -> bool {
         use raw_collections::Value;
-        match &self.value {
-            Value::Bool(_) | Value::Number(_) | Value::String(_) => true,
-            _ => false,
-        }
+        matches!(&self.value, Value::Bool(_) | Value::Number(_) | Value::String(_))
     }
 
     fn as_array(&self) -> Option<&dyn liquid::model::ArrayView> {
diff --git a/milli/src/prompt/fields.rs b/milli/src/prompt/fields.rs
index b5d86b348..ab15c31b0 100644
--- a/milli/src/prompt/fields.rs
+++ b/milli/src/prompt/fields.rs
@@ -316,11 +316,3 @@ impl<'a, 'map, D: ObjectView> fmt::Display for ArrayRender<'a, 'map, D> {
         Ok(())
     }
 }
-
-fn convert_index(index: i64, max_size: i64) -> i64 {
-    if 0 <= index {
-        index
-    } else {
-        max_size + index
-    }
-}
diff --git a/milli/src/prompt/mod.rs b/milli/src/prompt/mod.rs
index fd843cd3c..bbcf054e6 100644
--- a/milli/src/prompt/mod.rs
+++ b/milli/src/prompt/mod.rs
@@ -128,7 +128,7 @@ impl Prompt {
         let context = Context::new(&document, &fields);
         let mut rendered = bumpalo::collections::Vec::with_capacity_in(
             self.max_bytes.unwrap_or_else(default_max_bytes).get(),
-            &doc_alloc,
+            doc_alloc,
         );
         self.template
             .render_to(&mut rendered, &context)