diff --git a/pbs-api-types/src/datastore.rs b/pbs-api-types/src/datastore.rs
index 170d248fc..fbd01fc42 100644
--- a/pbs-api-types/src/datastore.rs
+++ b/pbs-api-types/src/datastore.rs
@@ -1190,7 +1190,7 @@ pub struct TypeCounts {
         },
     },
 )]
-#[derive(Clone, Serialize, Deserialize)]
+#[derive(Clone, Default, Serialize, Deserialize)]
 #[serde(rename_all = "kebab-case")]
 /// Garbage collection status.
 pub struct GarbageCollectionStatus {
@@ -1217,24 +1217,6 @@ pub struct GarbageCollectionStatus {
     pub still_bad: usize,
 }
 
-impl Default for GarbageCollectionStatus {
-    fn default() -> Self {
-        GarbageCollectionStatus {
-            upid: None,
-            index_file_count: 0,
-            index_data_bytes: 0,
-            disk_bytes: 0,
-            disk_chunks: 0,
-            removed_bytes: 0,
-            removed_chunks: 0,
-            pending_bytes: 0,
-            pending_chunks: 0,
-            removed_bad: 0,
-            still_bad: 0,
-        }
-    }
-}
-
 #[api(
     properties: {
         "gc-status": {
diff --git a/pbs-client/src/pxar/extract.rs b/pbs-client/src/pxar/extract.rs
index 95530e48a..161d2cef1 100644
--- a/pbs-client/src/pxar/extract.rs
+++ b/pbs-client/src/pxar/extract.rs
@@ -542,7 +542,7 @@ where
     let file = root
         .lookup(&path)
         .await?
-        .ok_or(format_err!("error opening '{:?}'", path.as_ref()))?;
+        .ok_or_else(|| format_err!("error opening '{:?}'", path.as_ref()))?;
 
     let mut components = file.entry().path().components();
     components.next_back(); // discard last
@@ -586,7 +586,7 @@ where
                         let entry = root
                             .lookup(&path)
                             .await?
-                            .ok_or(format_err!("error looking up '{:?}'", path))?;
+                            .ok_or_else(|| format_err!("error looking up '{:?}'", path))?;
                         let realfile = accessor.follow_hardlink(&entry).await?;
                         let metadata = realfile.entry().metadata();
                         let realpath = Path::new(link);
@@ -705,7 +705,7 @@ where
     let file = root
         .lookup(&path)
         .await?
-        .ok_or(format_err!("error opening '{:?}'", path.as_ref()))?;
+        .ok_or_else(|| format_err!("error opening '{:?}'", path.as_ref()))?;
 
     let prefix = {
         let mut components = file.entry().path().components();
@@ -753,7 +753,7 @@ where
                     let entry = root
                         .lookup(&path)
                         .await?
-                        .ok_or(format_err!("error looking up '{:?}'", path))?;
+                        .ok_or_else(|| format_err!("error looking up '{:?}'", path))?;
                     let realfile = accessor.follow_hardlink(&entry).await?;
                     let metadata = realfile.entry().metadata();
                     log::debug!("adding '{}' to zip", path.display());
@@ -841,7 +841,7 @@ where
     let file = root
         .lookup(&path)
         .await?
-        .ok_or(format_err!("error opening '{:?}'", path.as_ref()))?;
+        .ok_or_else(|| format_err!("error opening '{:?}'", path.as_ref()))?;
 
     recurse_files_extractor(&mut extractor, file).await
 }
@@ -917,8 +917,8 @@ fn get_filename(entry: &Entry) -> Result<(OsString, CString), Error> {
     Ok((file_name_os, file_name))
 }
 
-async fn recurse_files_extractor<'a, T>(
-    extractor: &'a mut Extractor,
+async fn recurse_files_extractor<T>(
+    extractor: &mut Extractor,
     file: FileEntry<T>,
 ) -> Result<(), Error>
 where
@@ -960,8 +960,8 @@ where
     Ok(())
 }
 
-async fn seq_files_extractor<'a, T>(
-    extractor: &'a mut Extractor,
+async fn seq_files_extractor<T>(
+    extractor: &mut Extractor,
     mut decoder: pxar::decoder::aio::Decoder<T>,
 ) -> Result<(), Error>
 where
diff --git a/pbs-client/src/pxar/tools.rs b/pbs-client/src/pxar/tools.rs
index 0a7da6ed3..ddb14edaf 100644
--- a/pbs-client/src/pxar/tools.rs
+++ b/pbs-client/src/pxar/tools.rs
@@ -134,10 +134,12 @@ pub fn format_single_line_entry(entry: &Entry) -> String {
         _ => ("0".to_string(), String::new()),
     };
 
+    let owner_string = format!("{}/{}", meta.stat.uid, meta.stat.gid);
+
     format!(
         "{} {:<13} {} {:>8} {:?}{}",
         mode_string,
-        format!("{}/{}", meta.stat.uid, meta.stat.gid),
+        owner_string,
         format_mtime(&meta.stat.mtime),
         size,
         entry.path(),
diff --git a/pbs-datastore/src/backup_info.rs b/pbs-datastore/src/backup_info.rs
index 1e5390926..7dce606f6 100644
--- a/pbs-datastore/src/backup_info.rs
+++ b/pbs-datastore/src/backup_info.rs
@@ -619,7 +619,7 @@ impl BackupInfo {
         })
     }
 
-    pub fn sort_list(list: &mut Vec<BackupInfo>, ascendending: bool) {
+    pub fn sort_list(list: &mut [BackupInfo], ascendending: bool) {
         if ascendending {
             // oldest first
             list.sort_unstable_by(|a, b| a.backup_dir.dir.time.cmp(&b.backup_dir.dir.time));
diff --git a/pbs-datastore/src/datastore.rs b/pbs-datastore/src/datastore.rs
index c871eae51..a539ddc5d 100644
--- a/pbs-datastore/src/datastore.rs
+++ b/pbs-datastore/src/datastore.rs
@@ -1181,7 +1181,7 @@ impl DataStore {
     /// stat'ed are placed at the end of the list
     pub fn get_chunks_in_order<F, A>(
         &self,
-        index: &Box<dyn IndexFile + Send>,
+        index: &(dyn IndexFile + Send),
         skip_chunk: F,
         check_abort: A,
     ) -> Result<Vec<(usize, u64)>, Error>
diff --git a/pbs-datastore/src/hierarchy.rs b/pbs-datastore/src/hierarchy.rs
index 260d54069..8b7af038b 100644
--- a/pbs-datastore/src/hierarchy.rs
+++ b/pbs-datastore/src/hierarchy.rs
@@ -209,7 +209,7 @@ impl Iterator for ListGroups {
                             group_type,
                         ) {
                             Ok(ty) => self.id_state = Some(ty),
-                            Err(err) => return Some(Err(err.into())),
+                            Err(err) => return Some(Err(err)),
                         }
                     }
                 }
diff --git a/pbs-datastore/src/snapshot_reader.rs b/pbs-datastore/src/snapshot_reader.rs
index a2bb6aa1d..5cc508815 100644
--- a/pbs-datastore/src/snapshot_reader.rs
+++ b/pbs-datastore/src/snapshot_reader.rs
@@ -146,7 +146,7 @@ impl<'a, F: Fn(&[u8; 32]) -> bool> Iterator for SnapshotChunkIterator<'a, F> {
                             Some(Operation::Read),
                         )?;
                         let order =
-                            datastore.get_chunks_in_order(&index, &self.skip_fn, |_| Ok(()))?;
+                            datastore.get_chunks_in_order(&*index, &self.skip_fn, |_| Ok(()))?;
 
                         self.current_index = Some((Arc::new(index), 0, order));
                     } else {
diff --git a/pbs-tape/src/linux_list_drives.rs b/pbs-tape/src/linux_list_drives.rs
index cc7765d34..39d2aac79 100644
--- a/pbs-tape/src/linux_list_drives.rs
+++ b/pbs-tape/src/linux_list_drives.rs
@@ -262,8 +262,8 @@ pub fn lookup_device<'a>(devices: &'a [TapeDeviceInfo], path: &str) -> Option<&'
 }
 
 /// Lookup optional drive identification attributes
-pub fn lookup_device_identification<'a>(
-    devices: &'a [TapeDeviceInfo],
+pub fn lookup_device_identification(
+    devices: &[TapeDeviceInfo],
     path: &str,
 ) -> OptionalDeviceIdentification {
     if let Some(info) = lookup_device(devices, path) {
diff --git a/pbs-tape/src/sg_pt_changer.rs b/pbs-tape/src/sg_pt_changer.rs
index d413c1e02..d5c1c5641 100644
--- a/pbs-tape/src/sg_pt_changer.rs
+++ b/pbs-tape/src/sg_pt_changer.rs
@@ -27,11 +27,10 @@ pub fn initialize_element_status<F: AsRawFd>(file: &mut F) -> Result<(), Error>
     // like mtx(1), set a very long timeout (30 minutes)
     sg_raw.set_timeout(30 * 60);
 
-    let mut cmd = Vec::new();
-    cmd.extend(&[0x07, 0, 0, 0, 0, 0]); // INITIALIZE ELEMENT STATUS (07h)
+    let cmd = &[0x07, 0, 0, 0, 0, 0]; // INITIALIZE ELEMENT STATUS (07h)
 
     sg_raw
-        .do_command(&cmd)
+        .do_command(cmd)
         .map_err(|err| format_err!("initializte element status (07h) failed - {}", err))?;
 
     Ok(())
@@ -123,15 +122,16 @@ fn read_element_address_assignment<F: AsRawFd>(
     let mut sg_raw = SgRaw::new(file, allocation_len as usize)?;
     sg_raw.set_timeout(SCSI_CHANGER_DEFAULT_TIMEOUT);
 
-    let mut cmd = Vec::new();
-    cmd.push(0x1A); // MODE SENSE6 (1Ah)
-    cmd.push(0x08); // DBD=1 (The Disable Block Descriptors)
-    cmd.push(0x1D); // Element Address Assignment Page
-    cmd.push(0);
-    cmd.push(allocation_len); // allocation len
-    cmd.push(0); //control
+    let cmd = &[
+        0x1A, // MODE SENSE6 (1Ah)
+        0x08, // DBD=1 (The Disable Block Descriptors)
+        0x1D, // Element Address Assignment Page
+        0,
+        allocation_len, // allocation len
+        0,              //control
+    ];
 
-    let data = execute_scsi_command(&mut sg_raw, &cmd, "read element address assignment", true)?;
+    let data = execute_scsi_command(&mut sg_raw, cmd, "read element address assignment", true)?;
 
     proxmox_lang::try_block!({
         let mut reader = &data[..];
@@ -146,6 +146,7 @@ fn read_element_address_assignment<F: AsRawFd>(
     .map_err(|err: Error| format_err!("decode element address assignment page failed - {}", err))
 }
 
+#[allow(clippy::vec_init_then_push)]
 fn scsi_move_medium_cdb(
     medium_transport_address: u16,
     source_element_address: u16,
@@ -276,6 +277,7 @@ impl ElementType {
     }
 }
 
+#[allow(clippy::vec_init_then_push)]
 fn scsi_read_element_status_cdb(
     start_element_address: u16,
     number_of_elements: u16,
diff --git a/pbs-tape/src/sg_tape.rs b/pbs-tape/src/sg_tape.rs
index 8ffd02dd8..784eb40ff 100644
--- a/pbs-tape/src/sg_tape.rs
+++ b/pbs-tape/src/sg_tape.rs
@@ -175,6 +175,7 @@ impl SgTape {
     /// of data. After the command is successfully completed, the
     /// drive is positioned immediately before End Of Data (not End Of
     /// Tape).
+    #[allow(clippy::vec_init_then_push)]
     pub fn erase_media(&mut self, fast: bool) -> Result<(), Error> {
         let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
         sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
@@ -273,6 +274,7 @@ impl SgTape {
         Ok(())
     }
 
+    #[allow(clippy::unusual_byte_groupings)]
     pub fn locate_file(&mut self, position: u64) -> Result<(), Error> {
         if position == 0 {
             return self.rewind();
@@ -534,8 +536,7 @@ impl SgTape {
         })?;
 
         sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
-        let mut cmd = Vec::new();
-        cmd.push(0x10);
+        let mut cmd = vec![0x10];
         if immediate {
             cmd.push(1); // IMMED=1
         } else {
@@ -668,16 +669,17 @@ impl SgTape {
         let mut sg_raw = SgRaw::new(&mut self.file, 0).unwrap(); // cannot fail with size 0
 
         sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
-        let mut cmd = Vec::new();
-        cmd.push(0x08); // READ
-        cmd.push(0x02); // VARIABLE SIZED BLOCKS, SILI=1
-                        //cmd.push(0x00); // VARIABLE SIZED BLOCKS, SILI=0
-        cmd.push(((transfer_len >> 16) & 0xff) as u8);
-        cmd.push(((transfer_len >> 8) & 0xff) as u8);
-        cmd.push((transfer_len & 0xff) as u8);
-        cmd.push(0); // control byte
+        let cmd = &[
+            0x08, // READ
+            0x02, // VARIABLE SIZED BLOCKS, SILI=1
+            //0x00, // VARIABLE SIZED BLOCKS, SILI=0
+            ((transfer_len >> 16) & 0xff) as u8,
+            ((transfer_len >> 8) & 0xff) as u8,
+            (transfer_len & 0xff) as u8,
+            0, // control byte
+        ];
 
-        let data = match sg_raw.do_in_command(&cmd, buffer) {
+        let data = match sg_raw.do_in_command(cmd, buffer) {
             Ok(data) => data,
             Err(ScsiError::Sense(SenseInfo {
                 sense_key: 0,
@@ -734,6 +736,7 @@ impl SgTape {
     }
 
     /// Set important drive options
+    #[allow(clippy::vec_init_then_push)]
     pub fn set_drive_options(
         &mut self,
         compression: Option<bool>,
diff --git a/pbs-tape/src/sg_tape/encryption.rs b/pbs-tape/src/sg_tape/encryption.rs
index bd841ba0a..20177d561 100644
--- a/pbs-tape/src/sg_tape/encryption.rs
+++ b/pbs-tape/src/sg_tape/encryption.rs
@@ -73,6 +73,7 @@ struct SspSetDataEncryptionPage {
     /* key follows */
 }
 
+#[allow(clippy::vec_init_then_push)]
 fn sg_spout_set_encryption<F: AsRawFd>(
     file: &mut F,
     algorythm_index: u8,
@@ -129,6 +130,7 @@ fn sg_spout_set_encryption<F: AsRawFd>(
 }
 
 // Warning: this blocks and fails if there is no media loaded
+#[allow(clippy::vec_init_then_push)]
 fn sg_spin_data_encryption_status<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
     let allocation_len: u32 = 8192 + 4;
 
@@ -157,6 +159,7 @@ fn sg_spin_data_encryption_status<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, E
 }
 
 // Warning: this blocks and fails if there is no media loaded
+#[allow(clippy::vec_init_then_push)]
 fn sg_spin_data_encryption_caps<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
     let allocation_len: u32 = 8192 + 4;
 
diff --git a/pbs-tape/src/sg_tape/mam.rs b/pbs-tape/src/sg_tape/mam.rs
index 4c9c5956a..01f62eb04 100644
--- a/pbs-tape/src/sg_tape/mam.rs
+++ b/pbs-tape/src/sg_tape/mam.rs
@@ -24,6 +24,7 @@ struct MamAttributeHeader {
     len: u16,
 }
 
+#[allow(clippy::upper_case_acronyms)]
 enum MamFormat {
     BINARY,
     ASCII,
diff --git a/pbs-tape/src/sg_tape/tape_alert_flags.rs b/pbs-tape/src/sg_tape/tape_alert_flags.rs
index 8b25d4bdb..1483d6255 100644
--- a/pbs-tape/src/sg_tape/tape_alert_flags.rs
+++ b/pbs-tape/src/sg_tape/tape_alert_flags.rs
@@ -79,6 +79,7 @@ pub fn read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<TapeAlertFlags,
     decode_tape_alert_flags(&data)
 }
 
+#[allow(clippy::vec_init_then_push)]
 fn sg_read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
     let mut sg_raw = SgRaw::new(file, 512)?;
 
diff --git a/pbs-tape/src/sg_tape/volume_statistics.rs b/pbs-tape/src/sg_tape/volume_statistics.rs
index 3bacfdc4e..002c011ea 100644
--- a/pbs-tape/src/sg_tape/volume_statistics.rs
+++ b/pbs-tape/src/sg_tape/volume_statistics.rs
@@ -22,6 +22,7 @@ pub fn read_volume_statistics<F: AsRawFd>(file: &mut F) -> Result<Lp17VolumeStat
     decode_volume_statistics(&data)
 }
 
+#[allow(clippy::vec_init_then_push)]
 fn sg_read_volume_statistics<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
     let alloc_len: u16 = 8192;
     let mut sg_raw = SgRaw::new(file, alloc_len as usize)?;
diff --git a/pbs-tape/src/sgutils2.rs b/pbs-tape/src/sgutils2.rs
index db92277b8..f74fb0e68 100644
--- a/pbs-tape/src/sgutils2.rs
+++ b/pbs-tape/src/sgutils2.rs
@@ -236,10 +236,12 @@ pub struct ModeParameterHeader {
 }
 
 impl ModeParameterHeader {
+    #[allow(clippy::unusual_byte_groupings)]
     pub fn buffer_mode(&self) -> u8 {
-        (self.flags3 & 0b0111_0000) >> 4
+        (self.flags3 & 0b0_111_0000) >> 4
     }
 
+    #[allow(clippy::unusual_byte_groupings)]
     pub fn set_buffer_mode(&mut self, buffer_mode: bool) {
         let mut mode = self.flags3 & 0b1_000_1111;
         if buffer_mode {
@@ -248,8 +250,9 @@ impl ModeParameterHeader {
         self.flags3 = mode;
     }
 
+    #[allow(clippy::unusual_byte_groupings)]
     pub fn write_protect(&self) -> bool {
-        (self.flags3 & 0b1000_0000) != 0
+        (self.flags3 & 0b1_000_0000) != 0
     }
 }
 
@@ -380,13 +383,11 @@ impl<'a, F: AsRawFd> SgRaw<'a, F> {
     ///
     /// The file must be a handle to a SCSI device.
     pub fn new(file: &'a mut F, buffer_size: usize) -> Result<Self, Error> {
-        let buffer;
-
-        if buffer_size > 0 {
-            buffer = alloc_page_aligned_buffer(buffer_size)?;
+        let buffer = if buffer_size > 0 {
+            alloc_page_aligned_buffer(buffer_size)?
         } else {
-            buffer = Box::new([]);
-        }
+            Box::new([])
+        };
 
         let sense_buffer = [0u8; 32];
 
@@ -683,8 +684,7 @@ pub fn scsi_mode_sense<F: AsRawFd, P: Endian>(
     let allocation_len: u16 = 4096;
     let mut sg_raw = SgRaw::new(file, allocation_len as usize)?;
 
-    let mut cmd = Vec::new();
-    cmd.push(0x5A); // MODE SENSE(10)
+    let mut cmd = vec![0x5A]; // MODE SENSE(10)
     if disable_block_descriptor {
         cmd.push(8); // DBD=1 (Disable Block Descriptors)
     } else {
diff --git a/proxmox-backup-client/src/main.rs b/proxmox-backup-client/src/main.rs
index fc7dc1faa..4bb9aa5e3 100644
--- a/proxmox-backup-client/src/main.rs
+++ b/proxmox-backup-client/src/main.rs
@@ -702,7 +702,7 @@ async fn create_backup(
 
     let backup_id = param["backup-id"]
         .as_str()
-        .unwrap_or(proxmox_sys::nodename());
+        .unwrap_or_else(|| proxmox_sys::nodename());
 
     let backup_ns = optional_ns_param(&param)?;
 
diff --git a/proxmox-restore-daemon/src/proxmox_restore_daemon/auth.rs b/proxmox-restore-daemon/src/proxmox_restore_daemon/auth.rs
index 1d6e2a8f1..6a3614d3d 100644
--- a/proxmox-restore-daemon/src/proxmox_restore_daemon/auth.rs
+++ b/proxmox-restore-daemon/src/proxmox_restore_daemon/auth.rs
@@ -59,7 +59,7 @@ impl ServerAdapter for StaticAuthAdapter {
     > {
         Box::pin(async move {
             match headers.get(hyper::header::AUTHORIZATION) {
-                Some(header) if header.to_str().unwrap_or("") == &self.ticket => {
+                Some(header) if header.to_str().unwrap_or("") == self.ticket => {
                     let user_info: Box<dyn UserInformation + Send + Sync> =
                         Box::new(SimpleUserInformation {});
                     Ok((String::from("root@pam"), user_info))
diff --git a/proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs b/proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs
index a3b7cfa4c..0aef30ea7 100644
--- a/proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs
+++ b/proxmox-restore-daemon/src/proxmox_restore_daemon/disk.rs
@@ -82,6 +82,7 @@ struct LVMBucketData {
 ///         more subdirectories
 /// e.g.: "/drive-scsi0/part/0/etc/passwd"
 #[derive(Clone)]
+#[allow(clippy::upper_case_acronyms)]
 enum Bucket {
     Partition(PartitionBucketData),
     RawFs(PartitionBucketData),
@@ -91,7 +92,7 @@ enum Bucket {
 
 impl Bucket {
     fn filter_mut<'a, A: AsRef<str>, B: AsRef<str>>(
-        haystack: &'a mut Vec<Bucket>,
+        haystack: &'a mut [Bucket],
         ty: A,
         comp: &[B],
     ) -> Option<&'a mut Bucket> {
diff --git a/src/acme/client.rs b/src/acme/client.rs
index 743712073..886be3e35 100644
--- a/src/acme/client.rs
+++ b/src/acme/client.rs
@@ -676,7 +676,7 @@ const fn retry() -> Retry {
 impl Retry {
     fn tick(&mut self) -> Result<(), Error> {
         if self.0 >= 3 {
-            Err(Error::Client(format!("kept getting a badNonce error!")))
+            Err(Error::Client("kept getting a badNonce error!".to_string()))
         } else {
             self.0 += 1;
             Ok(())
diff --git a/src/api2/access/openid.rs b/src/api2/access/openid.rs
index e75047f76..4a12e5710 100644
--- a/src/api2/access/openid.rs
+++ b/src/api2/access/openid.rs
@@ -257,7 +257,7 @@ fn openid_auth_url(
 
     let url = open_id.authorize_url(PROXMOX_BACKUP_RUN_DIR_M!(), &realm)?;
 
-    Ok(url.into())
+    Ok(url)
 }
 
 #[sortable]
diff --git a/src/api2/admin/datastore.rs b/src/api2/admin/datastore.rs
index 11a22e2a1..ff2f1f871 100644
--- a/src/api2/admin/datastore.rs
+++ b/src/api2/admin/datastore.rs
@@ -100,7 +100,7 @@ fn check_privs_and_load_store(
 
     if limited {
         let owner = datastore.get_owner(ns, backup_group)?;
-        check_backup_owner(&owner, &auth_id)?;
+        check_backup_owner(&owner, auth_id)?;
     }
 
     Ok(datastore)
@@ -778,6 +778,7 @@ pub async fn status(
 ///
 /// This function can verify a single backup snapshot, all backup from a backup group,
 /// or all backups in the datastore.
+#[allow(clippy::too_many_arguments)]
 pub fn verify(
     store: String,
     ns: Option<BackupNamespace>,
@@ -1287,7 +1288,7 @@ pub fn download_file(
 
         let backup_dir: pbs_api_types::BackupDir = Deserialize::deserialize(&param)?;
         let datastore = check_privs_and_load_store(
-            &store,
+            store,
             &backup_ns,
             &auth_id,
             PRIV_DATASTORE_READ,
@@ -1301,7 +1302,7 @@ pub fn download_file(
         println!(
             "Download {} from {} ({}/{})",
             file_name,
-            print_store_and_ns(&store, &backup_ns),
+            print_store_and_ns(store, &backup_ns),
             backup_dir,
             file_name
         );
@@ -1372,7 +1373,7 @@ pub fn download_file_decoded(
 
         let backup_dir_api: pbs_api_types::BackupDir = Deserialize::deserialize(&param)?;
         let datastore = check_privs_and_load_store(
-            &store,
+            store,
             &backup_ns,
             &auth_id,
             PRIV_DATASTORE_READ,
@@ -1394,7 +1395,7 @@ pub fn download_file_decoded(
         println!(
             "Download {} from {} ({}/{})",
             file_name,
-            print_store_and_ns(&store, &backup_ns),
+            print_store_and_ns(store, &backup_ns),
             backup_dir_api,
             file_name
         );
@@ -1403,7 +1404,7 @@ pub fn download_file_decoded(
         path.push(backup_dir.relative_path());
         path.push(&file_name);
 
-        let extension = file_name.rsplitn(2, '.').next().unwrap();
+        let (_, extension) = file_name.rsplit_once('.').unwrap();
 
         let body = match extension {
             "didx" => {
@@ -1503,7 +1504,7 @@ pub fn upload_backup_log(
         let backup_dir_api: pbs_api_types::BackupDir = Deserialize::deserialize(&param)?;
 
         let datastore = check_privs_and_load_store(
-            &store,
+            store,
             &backup_ns,
             &auth_id,
             0,
@@ -1524,7 +1525,7 @@ pub fn upload_backup_log(
 
         println!(
             "Upload backup log to {} {backup_dir_api}/{file_name}",
-            print_store_and_ns(&store, &backup_ns),
+            print_store_and_ns(store, &backup_ns),
         );
 
         let data = req_body
@@ -1667,7 +1668,7 @@ pub fn pxar_file_download(
 
         let backup_dir: pbs_api_types::BackupDir = Deserialize::deserialize(&param)?;
         let datastore = check_privs_and_load_store(
-            &store,
+            store,
             &ns,
             &auth_id,
             PRIV_DATASTORE_READ,
diff --git a/src/api2/backup/environment.rs b/src/api2/backup/environment.rs
index 8c1c42dbb..e9a5cbc87 100644
--- a/src/api2/backup/environment.rs
+++ b/src/api2/backup/environment.rs
@@ -255,7 +255,7 @@ impl BackupEnvironment {
     pub fn lookup_chunk(&self, digest: &[u8; 32]) -> Option<u32> {
         let state = self.state.lock().unwrap();
 
-        state.known_chunks.get(digest).map(|len| *len)
+        state.known_chunks.get(digest).copied()
     }
 
     /// Store the writer with an unique ID
diff --git a/src/api2/config/acme.rs b/src/api2/config/acme.rs
index 81455b47f..0f96986c1 100644
--- a/src/api2/config/acme.rs
+++ b/src/api2/config/acme.rs
@@ -246,9 +246,9 @@ pub async fn do_register_account<'a>(
     rsa_bits: Option<u32>,
 ) -> Result<&'a Account, Error> {
     let contact = account_contact_from_string(&contact);
-    Ok(client
+    client
         .new_account(name, agree_to_tos, contact, rsa_bits)
-        .await?)
+        .await
 }
 
 #[api(
diff --git a/src/api2/config/remote.rs b/src/api2/config/remote.rs
index a86a74a76..8c51f3d93 100644
--- a/src/api2/config/remote.rs
+++ b/src/api2/config/remote.rs
@@ -481,11 +481,7 @@ pub async fn scan_remote_groups(
 
     let client = remote_client(&remote, None).await.map_err(map_remote_err)?;
 
-    let args = if let Some(ns) = namespace {
-        Some(json!({ "ns": ns }))
-    } else {
-        None
-    };
+    let args = namespace.map(|ns| json!({ "ns": ns }));
 
     let api_res = client
         .get(&format!("api2/json/admin/datastore/{}/groups", store), args)
diff --git a/src/api2/config/tape_encryption_keys.rs b/src/api2/config/tape_encryption_keys.rs
index 9dc4d26ba..9a9f1b8dd 100644
--- a/src/api2/config/tape_encryption_keys.rs
+++ b/src/api2/config/tape_encryption_keys.rs
@@ -90,6 +90,7 @@ pub fn list_keys(
     },
 )]
 /// Change the encryption key's password (and password hint).
+#[allow(clippy::too_many_arguments)]
 pub fn change_passphrase(
     kdf: Option<Kdf>,
     password: Option<String>,
diff --git a/src/api2/node/certificates.rs b/src/api2/node/certificates.rs
index 1b9a88504..b3b468a01 100644
--- a/src/api2/node/certificates.rs
+++ b/src/api2/node/certificates.rs
@@ -397,7 +397,7 @@ async fn order_certificate(
                     .ok_or_else(|| format_err!("missing 'finalize' URL in order"))?;
                 if let Err(err) = acme.finalize(finalize, &csr.data).await {
                     if finalize_error_cnt >= 5 {
-                        return Err(err.into());
+                        return Err(err);
                     }
 
                     finalize_error_cnt += 1;
diff --git a/src/api2/node/disks/directory.rs b/src/api2/node/disks/directory.rs
index cada95cdb..1d3114ef3 100644
--- a/src/api2/node/disks/directory.rs
+++ b/src/api2/node/disks/directory.rs
@@ -88,7 +88,7 @@ pub fn list_datastore_mounts() -> Result<Vec<DatastoreMountInfo>, Error> {
         let name = data
             .Where
             .strip_prefix(BASE_MOUNT_DIR)
-            .unwrap_or_else(|| &data.Where)
+            .unwrap_or(&data.Where)
             .to_string();
 
         list.push(DatastoreMountInfo {
diff --git a/src/api2/node/journal.rs b/src/api2/node/journal.rs
index 1bedc8dc9..1ef302c7e 100644
--- a/src/api2/node/journal.rs
+++ b/src/api2/node/journal.rs
@@ -59,6 +59,7 @@ use pbs_api_types::{NODE_SCHEMA, PRIV_SYS_AUDIT};
     },
 )]
 /// Read syslog entries.
+#[allow(clippy::too_many_arguments)]
 fn get_journal(
     since: Option<i64>,
     until: Option<i64>,
diff --git a/src/api2/node/rrd.rs b/src/api2/node/rrd.rs
index 55e6099de..c43754b9a 100644
--- a/src/api2/node/rrd.rs
+++ b/src/api2/node/rrd.rs
@@ -41,9 +41,9 @@ pub fn create_value_from_rrd(
 
         let mut t = start;
 
-        for index in 0..data.len() {
-            let entry = timemap.entry(t).or_insert(json!({ "time": t }));
-            if let Some(value) = data[index] {
+        for value in data {
+            let entry = timemap.entry(t).or_insert_with(|| json!({ "time": t }));
+            if let Some(value) = value {
                 entry[*name] = value.into();
             }
             t += reso;
diff --git a/src/api2/node/syslog.rs b/src/api2/node/syslog.rs
index 15d3c2d1d..54b34334a 100644
--- a/src/api2/node/syslog.rs
+++ b/src/api2/node/syslog.rs
@@ -144,7 +144,7 @@ fn get_syslog(
 ) -> Result<Value, Error> {
     let service = param["service"]
         .as_str()
-        .map(|service| crate::api2::node::services::real_service_name(service));
+        .map(crate::api2::node::services::real_service_name);
 
     let (count, lines) = dump_journal(
         param["start"].as_u64(),
diff --git a/src/api2/pull.rs b/src/api2/pull.rs
index e05e946ec..8876aa5d9 100644
--- a/src/api2/pull.rs
+++ b/src/api2/pull.rs
@@ -216,6 +216,7 @@ The delete flag additionally requires the Datastore.Prune privilege on '/datasto
     },
 )]
 /// Sync store from other repository
+#[allow(clippy::too_many_arguments)]
 async fn pull(
     store: String,
     ns: Option<BackupNamespace>,
diff --git a/src/api2/status.rs b/src/api2/status.rs
index 0f2e42d63..d6dec9d22 100644
--- a/src/api2/status.rs
+++ b/src/api2/status.rs
@@ -49,7 +49,7 @@ pub async fn datastore_status(
         let user_privs = user_info.lookup_privs(&auth_id, &["datastore", store]);
         let allowed = (user_privs & (PRIV_DATASTORE_AUDIT | PRIV_DATASTORE_BACKUP)) != 0;
         if !allowed {
-            if let Ok(datastore) = DataStore::lookup_datastore(&store, Some(Operation::Lookup)) {
+            if let Ok(datastore) = DataStore::lookup_datastore(store, Some(Operation::Lookup)) {
                 if can_access_any_namespace(datastore, &auth_id, &user_info) {
                     list.push(DataStoreStatusListItem::empty(store, None));
                 }
@@ -57,7 +57,7 @@ pub async fn datastore_status(
             continue;
         }
 
-        let datastore = match DataStore::lookup_datastore(&store, Some(Operation::Read)) {
+        let datastore = match DataStore::lookup_datastore(store, Some(Operation::Read)) {
             Ok(datastore) => datastore,
             Err(err) => {
                 list.push(DataStoreStatusListItem::empty(store, Some(err.to_string())));
@@ -127,7 +127,7 @@ pub async fn datastore_status(
         list.push(entry);
     }
 
-    Ok(list.into())
+    Ok(list)
 }
 
 const SUBDIRS: SubdirMap = &[(
diff --git a/src/api2/tape/media.rs b/src/api2/tape/media.rs
index c6f6b52e7..ad7c43544 100644
--- a/src/api2/tape/media.rs
+++ b/src/api2/tape/media.rs
@@ -214,30 +214,28 @@ pub async fn list_media(
     let inventory = Inventory::load(status_path)?;
 
     let privs = user_info.lookup_privs(&auth_id, &["tape", "pool"]);
-    if (privs & PRIV_TAPE_AUDIT) != 0 {
-        if pool.is_none() {
-            for media_id in inventory.list_unassigned_media() {
-                let (mut status, location) = inventory.status_and_location(&media_id.label.uuid);
+    if (privs & PRIV_TAPE_AUDIT) != 0 && pool.is_none() {
+        for media_id in inventory.list_unassigned_media() {
+            let (mut status, location) = inventory.status_and_location(&media_id.label.uuid);
 
-                if status == MediaStatus::Unknown {
-                    status = MediaStatus::Writable;
-                }
-
-                list.push(MediaListEntry {
-                    uuid: media_id.label.uuid.clone(),
-                    ctime: media_id.label.ctime,
-                    label_text: media_id.label.label_text.to_string(),
-                    location,
-                    status,
-                    catalog: true, // empty, so we do not need a catalog
-                    expired: false,
-                    media_set_uuid: None,
-                    media_set_name: None,
-                    media_set_ctime: None,
-                    seq_nr: None,
-                    pool: None,
-                });
+            if status == MediaStatus::Unknown {
+                status = MediaStatus::Writable;
             }
+
+            list.push(MediaListEntry {
+                uuid: media_id.label.uuid.clone(),
+                ctime: media_id.label.ctime,
+                label_text: media_id.label.label_text.to_string(),
+                location,
+                status,
+                catalog: true, // empty, so we do not need a catalog
+                expired: false,
+                media_set_uuid: None,
+                media_set_name: None,
+                media_set_ctime: None,
+                seq_nr: None,
+                pool: None,
+            });
         }
     }
 
diff --git a/src/api2/tape/restore.rs b/src/api2/tape/restore.rs
index ba17bb6fd..2c8b08fc8 100644
--- a/src/api2/tape/restore.rs
+++ b/src/api2/tape/restore.rs
@@ -316,6 +316,7 @@ pub const ROUTER: Router = Router::new().post(&API_METHOD_RESTORE);
     },
 )]
 /// Restore data from media-set. Namespaces will be automatically created if necessary.
+#[allow(clippy::too_many_arguments)]
 pub fn restore(
     store: String,
     drive: String,
@@ -631,7 +632,7 @@ fn restore_list_worker(
             let mut restorable = Vec::new();
             // restore source namespaces
             for (store, snapshot) in catalog.list_snapshots() {
-                let (ns, dir) = match parse_ns_and_snapshot(&snapshot) {
+                let (ns, dir) = match parse_ns_and_snapshot(snapshot) {
                     Ok((ns, dir)) if store_map.has_full_mapping(store, &ns) => (ns, dir),
                     Err(err) => {
                         task_warn!(worker, "couldn't parse snapshot {snapshot} - {err}");
@@ -1194,7 +1195,6 @@ fn restore_partial_chunk_archive<'a>(
     let verify_and_write_channel = writer_pool.channel();
 
     while let Some((digest, blob)) = decoder.next_chunk()? {
-            
         worker.check_abort()?;
 
         if chunk_list.remove(&digest) {
@@ -1878,13 +1878,10 @@ pub fn fast_catalog_restore(
 
                 let catalog_uuid = &archive_header.uuid;
 
-                let wanted = media_set
-                    .media_list()
-                    .iter()
-                    .any(|e| match e {
-                        None => false,
-                        Some(uuid) => uuid == catalog_uuid,
-                    });
+                let wanted = media_set.media_list().iter().any(|e| match e {
+                    None => false,
+                    Some(uuid) => uuid == catalog_uuid,
+                });
 
                 if !wanted {
                     task_log!(
diff --git a/src/auth.rs b/src/auth.rs
index bd57fe87b..f1d5c0a19 100644
--- a/src/auth.rs
+++ b/src/auth.rs
@@ -17,6 +17,7 @@ pub trait ProxmoxAuthenticator {
     fn remove_password(&self, username: &UsernameRef) -> Result<(), Error>;
 }
 
+#[allow(clippy::upper_case_acronyms)]
 struct PAM();
 
 impl ProxmoxAuthenticator for PAM {
@@ -70,6 +71,7 @@ impl ProxmoxAuthenticator for PAM {
     }
 }
 
+#[allow(clippy::upper_case_acronyms)]
 struct PBS();
 
 const SHADOW_CONFIG_FILENAME: &str = configdir!("/shadow.json");
diff --git a/src/backup/hierarchy.rs b/src/backup/hierarchy.rs
index 0f05505af..640a7762d 100644
--- a/src/backup/hierarchy.rs
+++ b/src/backup/hierarchy.rs
@@ -85,7 +85,7 @@ pub fn can_access_any_namespace(
         PRIV_DATASTORE_AUDIT | PRIV_DATASTORE_MODIFY | PRIV_DATASTORE_READ | PRIV_DATASTORE_BACKUP;
     let name = store.name();
     iter.any(|ns| -> bool {
-        let user_privs = user_info.lookup_privs(&auth_id, &["datastore", name, &ns.to_string()]);
+        let user_privs = user_info.lookup_privs(auth_id, &["datastore", name, &ns.to_string()]);
         user_privs & wanted != 0
     })
 }
@@ -136,7 +136,7 @@ impl<'a> ListAccessibleBackupGroups<'a> {
             override_owner_priv: override_owner_priv.unwrap_or(0),
             owner_and_priv: owner_and_priv.unwrap_or(0),
             state: None,
-            store: store,
+            store,
             user_info: CachedUserInfo::new()?,
         })
     }
@@ -157,11 +157,10 @@ impl<'a> Iterator for ListAccessibleBackupGroups<'a> {
                             return Some(Ok(group));
                         }
                         if let Some(auth_id) = &self.auth_id {
-                            match self.store.owns_backup(
-                                &group.backup_ns(),
-                                group.group(),
-                                &auth_id,
-                            ) {
+                            match self
+                                .store
+                                .owns_backup(group.backup_ns(), group.group(), auth_id)
+                            {
                                 Ok(is_owner) if is_owner => return Some(Ok(group)),
                                 Ok(_) => continue,
                                 Err(err) => return Some(Err(err)),
@@ -182,8 +181,7 @@ impl<'a> Iterator for ListAccessibleBackupGroups<'a> {
                         if let Some(auth_id) = &self.auth_id {
                             let info = &self.user_info;
 
-                            let privs =
-                                info.lookup_privs(&auth_id, &ns.acl_path(self.store.name()));
+                            let privs = info.lookup_privs(auth_id, &ns.acl_path(self.store.name()));
 
                             if privs & NS_PRIVS_OK == 0 {
                                 continue;
@@ -196,7 +194,7 @@ impl<'a> Iterator for ListAccessibleBackupGroups<'a> {
                                 continue; // no owner override and no extra privs -> nothing visible
                             }
                         }
-                        self.state = match ListGroups::new(Arc::clone(&self.store), ns) {
+                        self.state = match ListGroups::new(Arc::clone(self.store), ns) {
                             Ok(iter) => Some((iter, override_owner)),
                             Err(err) => return Some(Err(err)),
                         };
diff --git a/src/backup/verify.rs b/src/backup/verify.rs
index 9ad45e5e3..3984e28dc 100644
--- a/src/backup/verify.rs
+++ b/src/backup/verify.rs
@@ -198,7 +198,7 @@ fn verify_index_chunks(
     let chunk_list =
         verify_worker
             .datastore
-            .get_chunks_in_order(&index, skip_chunk, check_abort)?;
+            .get_chunks_in_order(&*index, skip_chunk, check_abort)?;
 
     for (pos, _) in chunk_list {
         verify_worker.worker.check_abort()?;
diff --git a/src/bin/proxmox-backup-manager.rs b/src/bin/proxmox-backup-manager.rs
index 0ca3e990d..9857d7017 100644
--- a/src/bin/proxmox-backup-manager.rs
+++ b/src/bin/proxmox-backup-manager.rs
@@ -276,6 +276,7 @@ fn task_mgmt_cli() -> CommandLineInterface {
    }
 )]
 /// Sync datastore from another repository
+#[allow(clippy::too_many_arguments)]
 async fn pull_datastore(
     remote: String,
     remote_store: String,
diff --git a/src/config/node.rs b/src/config/node.rs
index 5a6a48d4e..881800a7c 100644
--- a/src/config/node.rs
+++ b/src/config/node.rs
@@ -231,10 +231,7 @@ pub struct NodeConfig {
 impl NodeConfig {
     pub fn acme_config(&self) -> Option<Result<AcmeConfig, Error>> {
         self.acme.as_deref().map(|config| -> Result<_, Error> {
-            Ok(crate::tools::config::from_property_string(
-                config,
-                &AcmeConfig::API_SCHEMA,
-            )?)
+            crate::tools::config::from_property_string(config, &AcmeConfig::API_SCHEMA)
         })
     }
 
diff --git a/src/server/email_notifications.rs b/src/server/email_notifications.rs
index 6fca41333..898bc8f31 100644
--- a/src/server/email_notifications.rs
+++ b/src/server/email_notifications.rs
@@ -538,7 +538,7 @@ pub fn send_updates_available(updates: &[&APTUpdateInfo]) -> Result<(), Error> {
 /// send email on certificate renewal failure.
 pub fn send_certificate_renewal_mail(result: &Result<(), Error>) -> Result<(), Error> {
     let error: String = match result {
-        Err(e) => e.to_string().into(),
+        Err(e) => e.to_string(),
         _ => return Ok(()),
     };
 
@@ -620,8 +620,7 @@ fn handlebars_humam_bytes_helper(
 ) -> HelperResult {
     let param = h
         .param(0)
-        .map(|v| v.value().as_u64())
-        .flatten()
+        .and_then(|v| v.value().as_u64())
         .ok_or_else(|| RenderError::new("human-bytes: param not found"))?;
 
     out.write(&HumanByte::from(param).to_string())?;
@@ -638,13 +637,11 @@ fn handlebars_relative_percentage_helper(
 ) -> HelperResult {
     let param0 = h
         .param(0)
-        .map(|v| v.value().as_f64())
-        .flatten()
+        .and_then(|v| v.value().as_f64())
         .ok_or_else(|| RenderError::new("relative-percentage: param0 not found"))?;
     let param1 = h
         .param(1)
-        .map(|v| v.value().as_f64())
-        .flatten()
+        .and_then(|v| v.value().as_f64())
         .ok_or_else(|| RenderError::new("relative-percentage: param1 not found"))?;
 
     if param1 == 0.0 {
diff --git a/src/server/jobstate.rs b/src/server/jobstate.rs
index 5cd43c848..4f347ad1a 100644
--- a/src/server/jobstate.rs
+++ b/src/server/jobstate.rs
@@ -324,10 +324,12 @@ pub fn compute_schedule_status(
         }
     };
 
-    let mut status = JobScheduleStatus::default();
-    status.last_run_upid = upid.map(String::from);
-    status.last_run_state = state;
-    status.last_run_endtime = endtime;
+    let mut status = JobScheduleStatus {
+        last_run_upid: upid.map(String::from),
+        last_run_state: state,
+        last_run_endtime: endtime,
+        ..Default::default()
+    };
 
     if let Some(schedule) = schedule {
         if let Ok(event) = schedule.parse::<CalendarEvent>() {
diff --git a/src/server/prune_job.rs b/src/server/prune_job.rs
index a62177e4f..4e261b489 100644
--- a/src/server/prune_job.rs
+++ b/src/server/prune_job.rs
@@ -164,9 +164,9 @@ pub fn do_prune_job(
     let worker_type = job.jobtype().to_string();
     let auth_id = auth_id.clone();
     let worker_id = match &prune_options.ns {
-        Some(ns) if ns.is_root() => format!("{store}"),
+        Some(ns) if ns.is_root() => store,
         Some(ns) => format!("{store}:{ns}"),
-        None => format!("{store}"),
+        None => store,
     };
 
     let upid_str = WorkerTask::new_thread(
diff --git a/src/server/pull.rs b/src/server/pull.rs
index b159c75d3..95d3b981a 100644
--- a/src/server/pull.rs
+++ b/src/server/pull.rs
@@ -788,7 +788,7 @@ fn check_and_create_ns(params: &PullParameters, ns: &BackupNamespace) -> Result<
     let mut created = false;
     let store_ns_str = print_store_and_ns(params.store.name(), ns);
 
-    if !ns.is_root() && !params.store.namespace_path(&ns).exists() {
+    if !ns.is_root() && !params.store.namespace_path(ns).exists() {
         check_ns_modification_privs(params.store.name(), ns, &params.owner)
             .map_err(|err| format_err!("Creating {ns} not allowed - {err}"))?;
 
@@ -817,7 +817,7 @@ fn check_and_create_ns(params: &PullParameters, ns: &BackupNamespace) -> Result<
 }
 
 fn check_and_remove_ns(params: &PullParameters, local_ns: &BackupNamespace) -> Result<bool, Error> {
-    check_ns_modification_privs(&params.store.name(), local_ns, &params.owner)
+    check_ns_modification_privs(params.store.name(), local_ns, &params.owner)
         .map_err(|err| format_err!("Removing {local_ns} not allowed - {err}"))?;
 
     params.store.remove_namespace_recursive(local_ns, true)
diff --git a/src/tape/file_formats/chunk_archive.rs b/src/tape/file_formats/chunk_archive.rs
index 8ed2f61d8..708470125 100644
--- a/src/tape/file_formats/chunk_archive.rs
+++ b/src/tape/file_formats/chunk_archive.rs
@@ -116,13 +116,11 @@ impl<'a> ChunkArchiveWriter<'a> {
             } else {
                 self.write_all(&blob_data[start..end])?
             };
-            if leom {
-                if self.close_on_leom {
-                    let mut writer = self.writer.take().unwrap();
-                    writer.finish(false)?;
-                    self.bytes_written = writer.bytes_written();
-                    return Ok(chunk_is_complete);
-                }
+            if leom && self.close_on_leom {
+                let mut writer = self.writer.take().unwrap();
+                writer.finish(false)?;
+                self.bytes_written = writer.bytes_written();
+                return Ok(chunk_is_complete);
             }
             start = end;
         }
diff --git a/src/tape/media_catalog.rs b/src/tape/media_catalog.rs
index 7fd007be9..25c752526 100644
--- a/src/tape/media_catalog.rs
+++ b/src/tape/media_catalog.rs
@@ -610,9 +610,7 @@ impl MediaCatalog {
         }
         self.pending.extend(store.as_bytes());
 
-        self.content
-            .entry(store.to_string())
-            .or_default();
+        self.content.entry(store.to_string()).or_default();
 
         self.current_archive = Some((uuid, file_number, store.to_string()));
 
@@ -726,10 +724,7 @@ impl MediaCatalog {
         self.pending.push(b':');
         self.pending.extend(path.as_bytes());
 
-        let content = self
-            .content
-            .entry(store.to_string())
-            .or_default();
+        let content = self.content.entry(store.to_string()).or_default();
 
         content.snapshot_index.insert(path, file_number);
 
@@ -857,9 +852,7 @@ impl MediaCatalog {
 
                     self.check_start_chunk_archive(file_number)?;
 
-                    self.content
-                        .entry(store.to_string())
-                        .or_default();
+                    self.content.entry(store.to_string()).or_default();
 
                     self.current_archive = Some((uuid, file_number, store.to_string()));
                 }
@@ -893,10 +886,7 @@ impl MediaCatalog {
                     let _ = parse_ns_and_snapshot(snapshot)?;
                     self.check_register_snapshot(file_number)?;
 
-                    let content = self
-                        .content
-                        .entry(store.to_string())
-                        .or_default();
+                    let content = self.content.entry(store.to_string()).or_default();
 
                     content
                         .snapshot_index
@@ -1015,19 +1005,14 @@ impl MediaSetCatalog {
     /// as (datastore, snapshot).
     /// The snapshot contains namespaces in the format 'ns/namespace'.
     pub fn list_snapshots(&self) -> impl Iterator<Item = (&str, &str)> {
-        self.catalog_list
-            .values()
-            .flat_map(|catalog| {
-                catalog
-                    .content
-                    .iter()
-                    .flat_map(|(store, content)| {
-                        content
-                            .snapshot_index
-                            .keys()
-                            .map(move |key| (store.as_str(), key.as_str()))
-                    })
+        self.catalog_list.values().flat_map(|catalog| {
+            catalog.content.iter().flat_map(|(store, content)| {
+                content
+                    .snapshot_index
+                    .keys()
+                    .map(move |key| (store.as_str(), key.as_str()))
             })
+        })
     }
 }
 
diff --git a/src/tape/media_pool.rs b/src/tape/media_pool.rs
index 0593feb4d..07413f1ff 100644
--- a/src/tape/media_pool.rs
+++ b/src/tape/media_pool.rs
@@ -344,13 +344,11 @@ impl MediaPool {
             MediaLocation::Online(name) => {
                 if self.force_media_availability {
                     true
+                } else if let Some(ref changer_name) = self.changer_name {
+                    name == changer_name
                 } else {
-                    if let Some(ref changer_name) = self.changer_name {
-                        name == changer_name
-                    } else {
-                        // a standalone drive cannot use media currently inside a library
-                        false
-                    }
+                    // a standalone drive cannot use media currently inside a library
+                    false
                 }
             }
             MediaLocation::Offline => {
@@ -686,10 +684,8 @@ impl MediaPool {
                     let media_location = media.location();
                     if self.location_is_available(media_location) {
                         last_is_writable = true;
-                    } else {
-                        if let MediaLocation::Vault(vault) = media_location {
-                            bail!("writable media offsite in vault '{}'", vault);
-                        }
+                    } else if let MediaLocation::Vault(vault) = media_location {
+                        bail!("writable media offsite in vault '{}'", vault);
                     }
                 }
                 _ => bail!(
diff --git a/src/tools/apt.rs b/src/tools/apt.rs
index 58cd605be..45b64cee7 100644
--- a/src/tools/apt.rs
+++ b/src/tools/apt.rs
@@ -110,13 +110,12 @@ fn get_changelog_url(
         command.arg("--print-uris");
         command.arg(package);
         let output = proxmox_sys::command::run_command(command, None)?; // format: 'http://foo/bar' package.changelog
-        let output = match output.splitn(2, ' ').next() {
-            Some(output) => {
-                if output.len() < 2 {
-                    bail!("invalid output (URI part too short) from 'apt-get changelog --print-uris': {}", output)
-                }
-                output[1..output.len() - 1].to_owned()
-            }
+        let output = match output.split_once(' ') {
+            Some((uri, _file_name)) if uri.len() > 2 => uri[1..uri.len() - 1].to_owned(),
+            Some((uri, _file_name)) => bail!(
+                "invalid output (URI part too short) from 'apt-get changelog --print-uris': {}",
+                uri
+            ),
             None => bail!(
                 "invalid output from 'apt-get changelog --print-uris': {}",
                 output
diff --git a/src/tools/disks/mod.rs b/src/tools/disks/mod.rs
index 35ec99963..6d070cd4c 100644
--- a/src/tools/disks/mod.rs
+++ b/src/tools/disks/mod.rs
@@ -478,7 +478,7 @@ impl Disk {
             let stat = unsafe { std::str::from_utf8_unchecked(&stat) };
             let stat: Vec<u64> = stat
                 .split_ascii_whitespace()
-                .map(|s| u64::from_str_radix(s, 10).unwrap_or(0))
+                .map(|s| s.parse().unwrap_or_default())
                 .collect();
 
             if stat.len() < 15 {
@@ -821,7 +821,7 @@ fn get_partitions_info(
 
             let mut used = PartitionUsageType::Unused;
 
-            if let Some(devnum) = disk.devnum().ok() {
+            if let Ok(devnum) = disk.devnum() {
                 if lvm_devices.contains(&devnum) {
                     used = PartitionUsageType::LVM;
                 } else if zfs_devices.contains(&devnum) {
diff --git a/src/tools/disks/smart.rs b/src/tools/disks/smart.rs
index 3738cdfd7..621527e99 100644
--- a/src/tools/disks/smart.rs
+++ b/src/tools/disks/smart.rs
@@ -203,7 +203,7 @@ pub fn get_smart_data(disk: &super::Disk, health_only: bool) -> Result<SmartData
     })
 }
 
-static WEAROUT_FIELD_ORDER: &[&'static str] = &[
+static WEAROUT_FIELD_ORDER: &[&str] = &[
     "Media_Wearout_Indicator",
     "SSD_Life_Left",
     "Wear_Leveling_Count",
diff --git a/src/tools/disks/zfs.rs b/src/tools/disks/zfs.rs
index 30a6cc0ca..45df81d9f 100644
--- a/src/tools/disks/zfs.rs
+++ b/src/tools/disks/zfs.rs
@@ -21,9 +21,9 @@ lazy_static! {
 
 fn get_pool_from_dataset(dataset: &str) -> &str {
     if let Some(idx) = dataset.find('/') {
-        &dataset[0..idx].as_ref()
+        dataset[0..idx].as_ref()
     } else {
-        dataset.as_ref()
+        dataset
     }
 }
 
@@ -53,7 +53,7 @@ pub fn zfs_pool_stats(pool: &OsStr) -> Result<Option<BlockDevStat>, Error> {
     // All times are nanoseconds
     let stat: Vec<u64> = lines[2]
         .split_ascii_whitespace()
-        .map(|s| u64::from_str_radix(s, 10).unwrap_or(0))
+        .map(|s| s.parse().unwrap_or_default())
         .collect();
 
     let ticks = (stat[4] + stat[7]) / 1_000_000; // convert to milisec
@@ -147,12 +147,10 @@ fn parse_objset_stat(pool: &str, objset_id: &str) -> Result<(String, BlockDevSta
         let value = parts.next().ok_or_else(|| format_err!("no value found"))?;
         match name {
             Some("dataset_name") => dataset_name = value.to_string(),
-            Some("writes") => stat.write_ios = u64::from_str_radix(value, 10).unwrap_or(0),
-            Some("nwritten") => {
-                stat.write_sectors = u64::from_str_radix(value, 10).unwrap_or(0) / 512
-            }
-            Some("reads") => stat.read_ios = u64::from_str_radix(value, 10).unwrap_or(0),
-            Some("nread") => stat.read_sectors = u64::from_str_radix(value, 10).unwrap_or(0) / 512,
+            Some("writes") => stat.write_ios = value.parse().unwrap_or_default(),
+            Some("nwritten") => stat.write_sectors = value.parse::<u64>().unwrap_or_default() / 512,
+            Some("reads") => stat.read_ios = value.parse().unwrap_or_default(),
+            Some("nread") => stat.read_sectors = value.parse::<u64>().unwrap_or_default() / 512,
             _ => {}
         }
     }
diff --git a/src/tools/disks/zpool_status.rs b/src/tools/disks/zpool_status.rs
index cb87c81f6..679ed1a6f 100644
--- a/src/tools/disks/zpool_status.rs
+++ b/src/tools/disks/zpool_status.rs
@@ -1,4 +1,4 @@
-use std::mem::replace;
+use std::mem::{replace, take};
 
 use anyhow::{bail, Error};
 use serde::{Deserialize, Serialize};
@@ -255,7 +255,7 @@ where
             stack.push(StackItem {
                 node: replace(&mut cur.node, node),
                 level: replace(&mut cur.level, vdev_level),
-                children_of_parent: replace(&mut cur.children_of_parent, Vec::new()),
+                children_of_parent: take(&mut cur.children_of_parent),
             });
         } else {
             // same indentation level, add to children of the previous level:
diff --git a/src/tools/mod.rs b/src/tools/mod.rs
index 408249c2d..fadb55ef3 100644
--- a/src/tools/mod.rs
+++ b/src/tools/mod.rs
@@ -56,7 +56,7 @@ impl<T: Any> AsAny for T {
 
 /// The default 2 hours are far too long for PBS
 pub const PROXMOX_BACKUP_TCP_KEEPALIVE_TIME: u32 = 120;
-pub const DEFAULT_USER_AGENT_STRING: &'static str = "proxmox-backup-client/1.0";
+pub const DEFAULT_USER_AGENT_STRING: &str = "proxmox-backup-client/1.0";
 
 /// Returns a new instance of `SimpleHttp` configured for PBS usage.
 pub fn pbs_simple_http(proxy_config: Option<ProxyConfig>) -> SimpleHttp {
@@ -64,7 +64,6 @@ pub fn pbs_simple_http(proxy_config: Option<ProxyConfig>) -> SimpleHttp {
         proxy_config,
         user_agent: Some(DEFAULT_USER_AGENT_STRING.to_string()),
         tcp_keepalive: Some(PROXMOX_BACKUP_TCP_KEEPALIVE_TIME),
-        ..Default::default()
     };
 
     SimpleHttp::with_options(options)