diff --git a/Cargo.lock b/Cargo.lock
index 30a01f4..f7e8b85 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -197,9 +197,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.77"
+version = "1.0.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9f73505338f7d905b19d18738976aae232eb46b8efc15554ffc56deb5d9ebe4"
+checksum = "a20104e2335ce8a659d6dd92a51a767a0c062599c73b343fd152cb401e828c3d"
 dependencies = [
  "jobserver",
 ]
@@ -987,9 +987,9 @@ dependencies = [
 
 [[package]]
 name = "hyper-rustls"
-version = "0.23.1"
+version = "0.23.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59df7c4e19c950e6e0e868dcc0a300b09a9b88e9ec55bd879ca819087a77355d"
+checksum = "1788965e61b367cd03a62950836d5cd41560c3577d90e40e0819373194d1661c"
 dependencies = [
  "http",
  "hyper",
@@ -1107,9 +1107,9 @@ dependencies = [
 
 [[package]]
 name = "ipnet"
-version = "2.5.1"
+version = "2.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f88c5561171189e69df9d98bcf18fd5f9558300f7ea7b801eb8a0fd748bd8745"
+checksum = "11b0d96e660696543b251e58030cf9787df56da39dab19ad60eae7353040917e"
 
 [[package]]
 name = "itertools"
@@ -2211,9 +2211,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.22.0"
+version = "1.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d76ce4a75fb488c605c54bf610f221cea8b0dafb53333c1a67e8ee199dcd2ae3"
+checksum = "eab6d665857cc6ca78d6e80303a02cea7a7851e85dfbd77cbdc09bd129f1ef46"
 dependencies = [
  "autocfg",
  "bytes",
@@ -2223,7 +2223,7 @@ dependencies = [
  "num_cpus",
  "pin-project-lite",
  "socket2",
- "winapi",
+ "windows-sys",
 ]
 
 [[package]]
@@ -2294,9 +2294,9 @@ checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
 [[package]]
 name = "typenum"
-version = "1.15.0"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
+checksum = "497961ef93d974e23eb6f433eb5fe1b7930b659f06d12dec6fc44a8f554c0bba"
 
 [[package]]
 name = "unicode-bidi"
@@ -2483,9 +2483,9 @@ dependencies = [
 
 [[package]]
 name = "webpki-roots"
-version = "0.22.5"
+version = "0.22.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "368bfe657969fb01238bb756d351dcade285e0f6fcbd36dcb23359a5169975be"
+checksum = "b6c71e40d7d2c34a5106301fb632274ca37242cd0c9d3e64dbece371a40a2d87"
 dependencies = [
  "webpki",
 ]
diff --git a/src/backend/cache.rs b/src/backend/cache.rs
index fccb5cf..78a20c2 100644
--- a/src/backend/cache.rs
+++ b/src/backend/cache.rs
@@ -225,7 +225,7 @@ impl Cache {
         let mut file = fs::OpenOptions::new()
             .create(true)
             .write(true)
-            .open(&filename)?;
+            .open(filename)?;
         file.write_all(&buf)?;
         Ok(())
     }
diff --git a/src/backend/local.rs b/src/backend/local.rs
index 8c945e6..1128eca 100644
--- a/src/backend/local.rs
+++ b/src/backend/local.rs
@@ -125,7 +125,7 @@ impl WriteBackend for LocalBackend {
         let mut file = fs::OpenOptions::new()
             .create(true)
             .write(true)
-            .open(&filename)?;
+            .open(filename)?;
         file.set_len(buf.len().try_into()?)?;
         file.write_all(&buf)?;
         file.sync_all()?;
@@ -146,12 +146,12 @@ impl LocalBackend {
     }
 
     pub fn remove_file(&self, filename: impl AsRef<Path>) -> Result<()> {
-        Ok(fs::remove_file(&filename)?)
+        Ok(fs::remove_file(filename)?)
     }
 
     pub fn create_dir(&self, item: impl AsRef<Path>) -> Result<()> {
         let dirname = self.path.join(item);
-        fs::create_dir_all(&dirname)?;
+        fs::create_dir_all(dirname)?;
         Ok(())
     }
 
@@ -161,7 +161,7 @@ impl LocalBackend {
             set_file_mtime(&filename, mtime)?;
         }
         if let Some(atime) = meta.atime.map(|t| FileTime::from_system_time(t.into())) {
-            set_file_atime(&filename, atime)?;
+            set_file_atime(filename, atime)?;
         }
         Ok(())
     }
@@ -203,7 +203,7 @@ impl LocalBackend {
 
         if let Some(mode) = meta.mode() {
             let mode = map_mode_from_go(*mode);
-            std::fs::set_permissions(&filename, fs::Permissions::from_mode(mode))?;
+            std::fs::set_permissions(filename, fs::Permissions::from_mode(mode))?;
         }
         Ok(())
     }
@@ -249,7 +249,7 @@ impl LocalBackend {
 
     pub fn read_at(&self, item: impl AsRef<Path>, offset: u64, length: u64) -> Result<Bytes> {
         let filename = self.path.join(item);
-        let mut file = File::open(&filename)?;
+        let mut file = File::open(filename)?;
         file.seek(SeekFrom::Start(offset))?;
         let mut vec = vec![0; length.try_into()?];
         file.read_exact(&mut vec)?;
@@ -275,7 +275,7 @@ impl LocalBackend {
         let file = fs::OpenOptions::new()
             .create(true)
             .write(true)
-            .open(&filename)?;
+            .open(filename)?;
         file.write_all_at(data, offset)?;
         Ok(())
     }
diff --git a/src/commands/check.rs b/src/commands/check.rs
index 99a821b..0d8e5d4 100644
--- a/src/commands/check.rs
+++ b/src/commands/check.rs
@@ -140,7 +140,7 @@ fn check_cache_files(
         return Ok(());
     }
 
-    let total_size = files.iter().map(|(_, size)| *size as u64).sum();
+    let total_size = files.values().map(|size| *size as u64).sum();
     p.set_length(total_size);
 
     files.into_par_iter()
diff --git a/src/commands/prune.rs b/src/commands/prune.rs
index 6fea832..0bf33b8 100644
--- a/src/commands/prune.rs
+++ b/src/commands/prune.rs
@@ -874,8 +874,7 @@ impl Pruner {
         if !self.existing_packs.is_empty() {
             if opts.instant_delete {
                 let p = progress_counter("removing unindexed packs...");
-                let existing_packs: Vec<_> =
-                    self.existing_packs.into_iter().map(|(id, _)| id).collect();
+                let existing_packs: Vec<_> = self.existing_packs.into_keys().collect();
                 be.delete_list(FileType::Pack, true, existing_packs, p)?;
             } else {
                 info!("marking not needed unindexed pack files for deletion...");
diff --git a/src/main.rs b/src/main.rs
index 433fbb4..9afc258 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,7 +4,6 @@
 //    trivial_casts??
 #![warn(
     bad_style,
-    const_err,
     dead_code,
     improper_ctypes,
     missing_copy_implementations,