diff --git a/meilidb-core/src/query_builder.rs b/meilidb-core/src/query_builder.rs
index 8aaa7d41a..4f7fe5766 100644
--- a/meilidb-core/src/query_builder.rs
+++ b/meilidb-core/src/query_builder.rs
@@ -353,7 +353,7 @@ mod tests {
     pub struct TempDatabase {
         database: Database,
         index: Index,
-        tempdir: TempDir,
+        _tempdir: TempDir,
     }
 
     impl TempDatabase {
@@ -418,7 +418,7 @@ mod tests {
             writer.commit().unwrap();
             drop(rkv);
 
-            TempDatabase { database, index, tempdir }
+            TempDatabase { database, index, _tempdir: tempdir }
         }
     }
 
diff --git a/meilidb-core/src/store/documents_fields.rs b/meilidb-core/src/store/documents_fields.rs
index 955a6af80..bc1033807 100644
--- a/meilidb-core/src/store/documents_fields.rs
+++ b/meilidb-core/src/store/documents_fields.rs
@@ -94,21 +94,20 @@ impl DocumentsFields {
         &self,
         reader: &'r T,
         document_id: DocumentId,
-    ) -> Result<DocumentFieldsIter<'r, T>, rkv::StoreError>
+    ) -> Result<DocumentFieldsIter<'r>, rkv::StoreError>
     {
         let document_id_bytes = document_id.0.to_be_bytes();
         let iter = self.documents_fields.iter_from(reader, document_id_bytes)?;
-        Ok(DocumentFieldsIter { reader, document_id, iter })
+        Ok(DocumentFieldsIter { document_id, iter })
     }
 }
 
-pub struct DocumentFieldsIter<'r, T> {
-    reader: &'r T,
+pub struct DocumentFieldsIter<'r> {
     document_id: DocumentId,
     iter: rkv::store::single::Iter<'r>,
 }
 
-impl<'r, T: rkv::Readable + 'r> Iterator for DocumentFieldsIter<'r, T> {
+impl<'r> Iterator for DocumentFieldsIter<'r> {
     type Item = Result<(SchemaAttr, &'r [u8]), rkv::StoreError>;
 
     fn next(&mut self) -> Option<Self::Item> {
diff --git a/meilidb-core/src/update/documents_addition.rs b/meilidb-core/src/update/documents_addition.rs
index 9bc2c8920..d0eb6a8b5 100644
--- a/meilidb-core/src/update/documents_addition.rs
+++ b/meilidb-core/src/update/documents_addition.rs
@@ -1,7 +1,6 @@
 use std::collections::HashSet;
 
 use fst::{SetBuilder, set::OpBuilder};
-use meilidb_schema::Schema;
 use sdset::{SetOperation, duo::Union};
 use serde::Serialize;
 
@@ -76,7 +75,7 @@ pub fn push_documents_addition<D: serde::Serialize>(
     let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
 
     let update = Update::DocumentsAddition(values);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+    updates_store.put_update(writer, last_update_id, &update)?;
 
     Ok(last_update_id)
 }
diff --git a/meilidb-core/src/update/documents_deletion.rs b/meilidb-core/src/update/documents_deletion.rs
index d4e703aa8..c17452ea9 100644
--- a/meilidb-core/src/update/documents_deletion.rs
+++ b/meilidb-core/src/update/documents_deletion.rs
@@ -79,7 +79,7 @@ pub fn push_documents_deletion(
     let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
 
     let update = Update::DocumentsDeletion(deletion);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+    updates_store.put_update(writer, last_update_id, &update)?;
 
     Ok(last_update_id)
 }
diff --git a/meilidb-core/src/update/mod.rs b/meilidb-core/src/update/mod.rs
index 0d2504115..0386ecc02 100644
--- a/meilidb-core/src/update/mod.rs
+++ b/meilidb-core/src/update/mod.rs
@@ -17,8 +17,7 @@ use std::cmp;
 use log::debug;
 use serde::{Serialize, Deserialize};
 
-use crate::{store, Error, MResult, DocumentId, RankedMap};
-use crate::error::UnsupportedOperation;
+use crate::{store, MResult, DocumentId, RankedMap};
 use meilidb_schema::Schema;
 
 #[derive(Debug, Serialize, Deserialize)]
diff --git a/meilidb-core/src/update/schema_update.rs b/meilidb-core/src/update/schema_update.rs
index d25bfa526..6c258c388 100644
--- a/meilidb-core/src/update/schema_update.rs
+++ b/meilidb-core/src/update/schema_update.rs
@@ -25,7 +25,7 @@ pub fn push_schema_update(
     let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
 
     let update = Update::SchemaUpdate(schema);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+    updates_store.put_update(writer, last_update_id, &update)?;
 
     Ok(last_update_id)
 }
diff --git a/meilidb-core/src/update/synonyms_addition.rs b/meilidb-core/src/update/synonyms_addition.rs
index 69591b86e..7ed24a3d7 100644
--- a/meilidb-core/src/update/synonyms_addition.rs
+++ b/meilidb-core/src/update/synonyms_addition.rs
@@ -1,15 +1,11 @@
 use std::collections::BTreeMap;
-use std::sync::Arc;
 
 use fst::{SetBuilder, set::OpBuilder};
 use sdset::SetBuf;
 
 use crate::automaton::normalize_str;
-use crate::raw_indexer::RawIndexer;
-use crate::serde::{extract_document_id, Serializer, RamDocumentStore};
-use crate::store;
 use crate::update::{Update, next_update_id};
-use crate::{MResult, Error, RankedMap};
+use crate::{store, MResult};
 
 pub struct SynonymsAddition {
     updates_store: store::Updates,
@@ -67,7 +63,7 @@ pub fn push_synonyms_addition(
     let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
 
     let update = Update::SynonymsAddition(addition);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+    updates_store.put_update(writer, last_update_id, &update)?;
 
     Ok(last_update_id)
 }
diff --git a/meilidb-core/src/update/synonyms_deletion.rs b/meilidb-core/src/update/synonyms_deletion.rs
index 66ad1dd44..1acb553e1 100644
--- a/meilidb-core/src/update/synonyms_deletion.rs
+++ b/meilidb-core/src/update/synonyms_deletion.rs
@@ -1,16 +1,12 @@
 use std::collections::BTreeMap;
 use std::iter::FromIterator;
-use std::sync::Arc;
 
 use fst::{SetBuilder, set::OpBuilder};
 use sdset::SetBuf;
 
 use crate::automaton::normalize_str;
-use crate::raw_indexer::RawIndexer;
-use crate::serde::{extract_document_id, Serializer, RamDocumentStore};
-use crate::store;
 use crate::update::{Update, next_update_id};
-use crate::{MResult, Error, RankedMap};
+use crate::{store, MResult};
 
 pub struct SynonymsDeletion {
     updates_store: store::Updates,
@@ -77,7 +73,7 @@ pub fn push_synonyms_deletion(
     let last_update_id = next_update_id(writer, updates_store, updates_results_store)?;
 
     let update = Update::SynonymsDeletion(deletion);
-    let update_id = updates_store.put_update(writer, last_update_id, &update)?;
+    updates_store.put_update(writer, last_update_id, &update)?;
 
     Ok(last_update_id)
 }