diff --git a/src/backend/decrypt.rs b/src/backend/decrypt.rs
index dcf5eca..4bf0c35 100644
--- a/src/backend/decrypt.rs
+++ b/src/backend/decrypt.rs
@@ -25,7 +25,7 @@ impl<R: ReadBackend> DecryptBackend<R> {
     pub fn new(be: &R, key: Key) -> Self {
         Self {
             backend: be.clone(),
-            key: key,
+            key,
         }
     }
 }
@@ -38,15 +38,13 @@ impl<R: ReadBackend> ReadBackend for DecryptBackend<R> {
     }
 
     fn list(&self, tpe: FileType) -> Result<Vec<Id>, Self::Error> {
-        self.backend
-            .list(tpe)
-            .map_err(|err| RepoError::RepoError(err))
+        self.backend.list(tpe).map_err(RepoError::RepoError)
     }
 
     fn read_full(&self, tpe: FileType, id: Id) -> Result<Vec<u8>, Self::Error> {
         self.key
             .decrypt_data(&self.backend.read_full(tpe, id)?)
-            .map_err(|err| RepoError::CryptoError(err))
+            .map_err(RepoError::CryptoError)
     }
 
     fn read_partial(
@@ -58,6 +56,6 @@ impl<R: ReadBackend> ReadBackend for DecryptBackend<R> {
     ) -> Result<Vec<u8>, Self::Error> {
         self.key
             .decrypt_data(&self.backend.read_partial(tpe, id, offset, length)?)
-            .map_err(|err| RepoError::CryptoError(err))
+            .map_err(RepoError::CryptoError)
     }
 }
diff --git a/src/blob/tree.rs b/src/blob/tree.rs
index 9eb47a5..e1d77f4 100644
--- a/src/blob/tree.rs
+++ b/src/blob/tree.rs
@@ -3,7 +3,7 @@ use std::path::PathBuf;
 
 use anyhow::{anyhow, Result};
 use chrono::{DateTime, Local};
-use derive_more::{Constructor, Display};
+use derive_more::Constructor;
 use serde::{Deserialize, Serialize};
 use serde_aux::prelude::*;
 
@@ -96,8 +96,8 @@ where
                 .unwrap()
                 .nodes
                 .into_iter(),
-            be: be,
-            index: index,
+            be,
+            index,
             open_iterators: Vec::new(),
             path: PathBuf::new(),
         }
@@ -135,7 +135,7 @@ where
                         } else {
                             self.path.join(&node.name)
                         },
-                        node: node,
+                        node,
                     });
                 }
                 None => match self.open_iterators.pop() {
diff --git a/src/commands/ls.rs b/src/commands/ls.rs
index f3bd787..dd56483 100644
--- a/src/commands/ls.rs
+++ b/src/commands/ls.rs
@@ -1,10 +1,10 @@
-use anyhow::{anyhow, bail, Result};
+use anyhow::{anyhow, Result};
 use clap::Parser;
 
 use crate::backend::{FileType, MapResult, ReadBackend};
-use crate::blob::{Tree, TreeIterator};
+use crate::blob::TreeIterator;
 use crate::id::Id;
-use crate::index::{indexfiles::AllIndexFiles, ReadIndex};
+use crate::index::indexfiles::AllIndexFiles;
 use crate::repo::SnapshotFile;
 
 #[derive(Parser)]
diff --git a/src/id.rs b/src/id.rs
index 5498bd5..9db7fce 100644
--- a/src/id.rs
+++ b/src/id.rs
@@ -30,7 +30,7 @@ impl Id {
         ))
     }
 
-    pub fn to_hex(&self) -> String {
-        hex::encode(&self.0)
+    pub fn to_hex(self) -> String {
+        hex::encode(self.0)
     }
 }
diff --git a/src/index/indexfiles.rs b/src/index/indexfiles.rs
index 4b3673f..bfc82c9 100644
--- a/src/index/indexfiles.rs
+++ b/src/index/indexfiles.rs
@@ -10,7 +10,7 @@ pub struct AllIndexFiles<BE> {
 
 impl<BE: ReadBackend> AllIndexFiles<BE> {
     pub fn new(be: BE) -> Self {
-        Self { be: be }
+        Self { be }
     }
 }
 
@@ -26,7 +26,7 @@ impl<BE: ReadBackend> AllIndexFiles<BE> {
                     .packs()
                     .into_iter()
                     .flat_map(|p| {
-                        let id = p.id().clone();
+                        let id = *p.id();
                         p.blobs()
                             .into_iter()
                             .map(move |b| IndexEntry::new(id, b.to_bi()))