diff --git a/crates/reportify/src/lib.rs b/crates/reportify/src/lib.rs
index 0dd2583..44be1bc 100644
--- a/crates/reportify/src/lib.rs
+++ b/crates/reportify/src/lib.rs
@@ -840,7 +840,6 @@ impl<T, E> ResultExt<T, E> for Result<T, E> {
     }
 
     #[track_caller]
-    #[must_use]
     fn whatever<F, C>(self, description: C) -> Result<T, Report<F>>
     where
         F: Whatever,
@@ -854,7 +853,6 @@ impl<T, E> ResultExt<T, E> for Result<T, E> {
     }
 
     #[track_caller]
-    #[must_use]
     fn whatever_with<F, C, X>(self, description: X) -> Result<T, Report<F>>
     where
         F: Whatever,
diff --git a/crates/reportify/src/renderer.rs b/crates/reportify/src/renderer.rs
index 96cc235..af52784 100644
--- a/crates/reportify/src/renderer.rs
+++ b/crates/reportify/src/renderer.rs
@@ -117,7 +117,7 @@ enum ReportTreeNode<'report> {
     },
 }
 
-impl<'report> TreeNode for ReportTreeNode<'report> {
+impl TreeNode for ReportTreeNode<'_> {
     fn render(&self, renderer: &mut Renderer) -> fmt::Result {
         use std::fmt::Write;
         match self {
diff --git a/crates/rugpi-common/src/artifact/format/decode.rs b/crates/rugpi-common/src/artifact/format/decode.rs
index 81c6393..dce9f25 100644
--- a/crates/rugpi-common/src/artifact/format/decode.rs
+++ b/crates/rugpi-common/src/artifact/format/decode.rs
@@ -27,18 +27,18 @@ pub enum DecodeError {
 pub trait Decode: Sized {
     /// Try to decode the structure from a segment.
     #[allow(unused_variables)]
-    fn decode_segment<'r, R: BufRead>(segment: SegmentDecoder<'r, R>) -> Result<Self, DecodeError> {
+    fn decode_segment<R: BufRead>(segment: SegmentDecoder<'_, R>) -> Result<Self, DecodeError> {
         todo!("cannot be decoded from segment")
     }
 
     /// Try to decode the structure from a value.
     #[allow(unused_variables)]
-    fn decode_value<'r, R: BufRead>(value: ValueDecoder<'r, R>) -> Result<Self, DecodeError> {
+    fn decode_value<R: BufRead>(value: ValueDecoder<'_, R>) -> Result<Self, DecodeError> {
         todo!("cannot be decoded from value")
     }
 
     /// Try to decode the structure from either a segment or a value.
-    fn decode<'r, R: BufRead>(decoder: Decoder<'r, R>) -> Result<Self, DecodeError> {
+    fn decode<R: BufRead>(decoder: Decoder<'_, R>) -> Result<Self, DecodeError> {
         match decoder {
             Decoder::Segment(segment) => Self::decode_segment(segment),
             Decoder::Value(value) => Self::decode_value(value),
@@ -46,10 +46,7 @@ pub trait Decode: Sized {
     }
 
     #[allow(unused_variables)]
-    fn decode_extension<'r, R: BufRead>(
-        &mut self,
-        decoder: Decoder<'r, R>,
-    ) -> Result<(), DecodeError> {
+    fn decode_extension<R: BufRead>(&mut self, decoder: Decoder<'_, R>) -> Result<(), DecodeError> {
         todo!(
             "cannot decode extension of {}",
             std::any::type_name::<Self>()
@@ -62,14 +59,11 @@ pub trait Decode: Sized {
 }
 
 impl<T: Decode> Decode for Option<T> {
-    fn decode<'r, R: BufRead>(decoder: Decoder<'r, R>) -> Result<Self, DecodeError> {
+    fn decode<R: BufRead>(decoder: Decoder<'_, R>) -> Result<Self, DecodeError> {
         Ok(Some(decoder.decode()?))
     }
 
-    fn decode_extension<'r, R: BufRead>(
-        &mut self,
-        decoder: Decoder<'r, R>,
-    ) -> Result<(), DecodeError> {
+    fn decode_extension<R: BufRead>(&mut self, decoder: Decoder<'_, R>) -> Result<(), DecodeError> {
         match self {
             Some(inner) => inner.decode_extension(decoder),
             None => {
@@ -85,14 +79,11 @@ impl<T: Decode> Decode for Option<T> {
 }
 
 impl<T: Decode> Decode for Vec<T> {
-    fn decode<'r, R: BufRead>(decoder: Decoder<'r, R>) -> Result<Self, DecodeError> {
+    fn decode<R: BufRead>(decoder: Decoder<'_, R>) -> Result<Self, DecodeError> {
         Ok(vec![decoder.decode()?])
     }
 
-    fn decode_extension<'r, R: BufRead>(
-        &mut self,
-        decoder: Decoder<'r, R>,
-    ) -> Result<(), DecodeError> {
+    fn decode_extension<R: BufRead>(&mut self, decoder: Decoder<'_, R>) -> Result<(), DecodeError> {
         self.push(decoder.decode()?);
         Ok(())
     }
@@ -103,19 +94,19 @@ impl<T: Decode> Decode for Vec<T> {
 }
 
 impl Decode for String {
-    fn decode_value<'r, R: BufRead>(mut value: ValueDecoder<'r, R>) -> Result<Self, DecodeError> {
+    fn decode_value<R: BufRead>(mut value: ValueDecoder<'_, R>) -> Result<Self, DecodeError> {
         String::from_utf8(value.consume_bytes()?).map_err(|_| todo!("handle invalid UTF-8"))
     }
 }
 
 impl Decode for Bytes {
-    fn decode_value<'r, R: BufRead>(mut value: ValueDecoder<'r, R>) -> Result<Self, DecodeError> {
+    fn decode_value<R: BufRead>(mut value: ValueDecoder<'_, R>) -> Result<Self, DecodeError> {
         Ok(value.consume_bytes()?.into())
     }
 }
 
 impl Decode for bool {
-    fn decode_value<'r, R: BufRead>(mut value: ValueDecoder<'r, R>) -> Result<Self, DecodeError> {
+    fn decode_value<R: BufRead>(mut value: ValueDecoder<'_, R>) -> Result<Self, DecodeError> {
         Ok(value.consume_array::<1>()?[0] != 0)
     }
 }
@@ -124,7 +115,7 @@ macro_rules! impl_decode_for_int {
     ($($int:ty),*) => {
         $(
             impl Decode for $int {
-                fn decode_value<'r, R: BufRead>(mut value: ValueDecoder<'r, R>) -> Result<Self, DecodeError> {
+                fn decode_value<R: BufRead>(mut value: ValueDecoder<'_, R>) -> Result<Self, DecodeError> {
                     Ok(Self::from_be_bytes(value.consume_array()?))
                 }
             }
@@ -134,9 +125,7 @@ macro_rules! impl_decode_for_int {
 
 impl_decode_for_int! { i8, u8, i16, u16, i32, u32, i64, u64, i128, u128 }
 
-pub fn start_decoder<'r, R: BufRead>(
-    reader: &'r mut R,
-) -> Result<Option<Decoder<'r, R>>, DecodeError> {
+pub fn start_decoder<R: BufRead>(reader: &mut R) -> Result<Option<Decoder<'_, R>>, DecodeError> {
     let Some(head) = read_atom_head(reader)? else {
         return Ok(None);
     };
@@ -191,6 +180,7 @@ impl<'r, R: BufRead> SegmentDecoder<'r, R> {
         Ok(())
     }
 
+    #[allow(clippy::should_implement_trait)]
     pub fn next(&mut self) -> Result<Option<Decoder<'_, R>>, DecodeError> {
         if self.completed {
             return Ok(None);
@@ -227,7 +217,7 @@ pub enum Decoder<'r, R> {
     Value(ValueDecoder<'r, R>),
 }
 
-impl<'r, R: BufRead> Decoder<'r, R> {
+impl<R: BufRead> Decoder<'_, R> {
     pub fn skip(self) -> Result<(), DecodeError> {
         match self {
             Decoder::Segment(mut segment) => segment.skip(),
@@ -254,7 +244,7 @@ pub struct ValueDecoder<'r, R> {
     remaining: u64,
 }
 
-impl<'r, R: BufRead> ValueDecoder<'r, R> {
+impl<R: BufRead> ValueDecoder<'_, R> {
     pub fn tag(&self) -> Tag {
         self.head.tag()
     }
@@ -285,7 +275,7 @@ impl<'r, R: BufRead> ValueDecoder<'r, R> {
     }
 }
 
-impl<'r, R: Seek> ValueDecoder<'r, R> {
+impl<R: Seek> ValueDecoder<'_, R> {
     pub fn skip_seek(&mut self) -> io::Result<()> {
         self.reader.seek_relative(self.remaining as i64)?;
         self.remaining = 0;
diff --git a/crates/rugpi-common/src/artifact/format/macros.rs b/crates/rugpi-common/src/artifact/format/macros.rs
index 440fbbf..0e7ac3e 100644
--- a/crates/rugpi-common/src/artifact/format/macros.rs
+++ b/crates/rugpi-common/src/artifact/format/macros.rs
@@ -18,8 +18,8 @@ macro_rules! define_struct {
         }
 
         impl $crate::artifact::format::decode::Decode for $name {
-            fn decode_segment<'r, R: std::io::BufRead>(
-                mut segment: $crate::artifact::format::decode::SegmentDecoder<'r, R>,
+            fn decode_segment<R: std::io::BufRead>(
+                mut segment: $crate::artifact::format::decode::SegmentDecoder<'_, R>,
             ) -> Result<Self, $crate::artifact::format::decode::DecodeError> {
                 $(
                     let mut $field_name = <$field_type>::initial_value();
@@ -74,8 +74,8 @@ macro_rules! define_enum {
         }
 
         impl Decode for $name {
-            fn decode_segment<'r, R: BufRead>(
-                mut segment: SegmentDecoder<'r, R>,
+            fn decode_segment<R: BufRead>(
+                mut segment: SegmentDecoder<'_, R>,
             ) -> Result<Self, DecodeError> {
                 let mut variant = None;
                 while let Some(decoder) = segment.next()? {
diff --git a/crates/rugpi-common/src/artifact/format/mod.rs b/crates/rugpi-common/src/artifact/format/mod.rs
index 689e26c..97181ad 100644
--- a/crates/rugpi-common/src/artifact/format/mod.rs
+++ b/crates/rugpi-common/src/artifact/format/mod.rs
@@ -106,8 +106,8 @@ pub struct Metadata {
 }
 
 impl Decode for Metadata {
-    fn decode_segment<'r, R: BufRead>(
-        mut segment: SegmentDecoder<'r, R>,
+    fn decode_segment<R: BufRead>(
+        mut segment: SegmentDecoder<'_, R>,
     ) -> Result<Self, DecodeError> {
         let mut key = None;
         let mut map = HashMap::new();
diff --git a/crates/rugpi-common/src/artifact/format/stlv.rs b/crates/rugpi-common/src/artifact/format/stlv.rs
index fa33568..ee7d2d5 100644
--- a/crates/rugpi-common/src/artifact/format/stlv.rs
+++ b/crates/rugpi-common/src/artifact/format/stlv.rs
@@ -501,7 +501,7 @@ struct DisplayTag<'r> {
     resolver: Option<&'r dyn TagNameResolver>,
 }
 
-impl<'r> fmt::Display for DisplayTag<'r> {
+impl fmt::Display for DisplayTag<'_> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self.resolver {
             Some(resolver) => fmt::Write::write_fmt(
diff --git a/crates/rugpi-common/src/boot/grub.rs b/crates/rugpi-common/src/boot/grub.rs
index a918d36..14c6611 100644
--- a/crates/rugpi-common/src/boot/grub.rs
+++ b/crates/rugpi-common/src/boot/grub.rs
@@ -162,10 +162,10 @@ pub type GrubEnv = HashMap<String, String>;
 
 pub fn load_grub_env<P: AsRef<Path>>(path: P) -> Result<GrubEnv, Report<GrubEnvError>> {
     fn inner(path: &Path) -> Result<GrubEnv, Report<GrubEnvError>> {
-        Ok(grub_envblk_decode(
+        grub_envblk_decode(
             &fs::read_to_string(path).whatever("unable to read Grub environment")?,
         )
-        .whatever("unable to decode Grub environment")?)
+        .whatever("unable to decode Grub environment")
     }
     inner(path.as_ref())
 }
diff --git a/crates/rugpi-common/src/disk/blkdev.rs b/crates/rugpi-common/src/disk/blkdev.rs
index c25d7e7..7612f32 100644
--- a/crates/rugpi-common/src/disk/blkdev.rs
+++ b/crates/rugpi-common/src/disk/blkdev.rs
@@ -44,7 +44,7 @@ impl BlockDevice {
                 String::from_utf8(path.into_os_string().into_encoded_bytes()).map_err(|_| {
                     io::Error::new(
                         io::ErrorKind::InvalidInput,
-                        format!("device path must be valid UTF-8"),
+                        "device path must be valid UTF-8".to_string(),
                     )
                 })?;
             let stat = nix::sys::stat::stat(path.as_str())?;
diff --git a/crates/rugpi-common/src/disk/stream.rs b/crates/rugpi-common/src/disk/stream.rs
index 405424e..786c02a 100644
--- a/crates/rugpi-common/src/disk/stream.rs
+++ b/crates/rugpi-common/src/disk/stream.rs
@@ -184,7 +184,7 @@ pub struct PartitionStream<'stream, R> {
     entry: PartitionEntry,
 }
 
-impl<'stream, R> PartitionStream<'stream, R> {
+impl<R> PartitionStream<'_, R> {
     /// The entry of the partition.
     pub fn entry(&self) -> &PartitionEntry {
         &self.entry
@@ -196,7 +196,7 @@ impl<'stream, R> PartitionStream<'stream, R> {
     }
 }
 
-impl<'stream, R: Read> Read for PartitionStream<'stream, R> {
+impl<R: Read> Read for PartitionStream<'_, R> {
     fn read(&mut self, mut buf: &mut [u8]) -> io::Result<usize> {
         if self.remaining < buf.len() as u64 {
             if self.remaining == 0 {
diff --git a/crates/rugpi-common/src/system/partitions.rs b/crates/rugpi-common/src/system/partitions.rs
index db6b6b1..5c45bea 100644
--- a/crates/rugpi-common/src/system/partitions.rs
+++ b/crates/rugpi-common/src/system/partitions.rs
@@ -18,7 +18,7 @@ pub fn resolve_data_partition(
     config: &PartitionConfig,
 ) -> Option<BlockDevice> {
     resolve_partition(root, config, || {
-        match root.map(|root| root.table.as_ref()).flatten() {
+        match root.and_then(|root| root.table.as_ref()) {
             Some(table) => Ok(if table.is_mbr() { 7 } else { 6 }),
             None => {
                 bail!("no root device partition table")
@@ -71,7 +71,7 @@ fn resolve_partition(
             bail!("unable to resolve partition {partition}: no root device")
         }
     };
-    Ok(Some(device.into()))
+    Ok(Some(device))
 }
 
 /// Config partition of the system.
@@ -145,7 +145,7 @@ impl ConfigPartition {
 #[derive(Debug)]
 struct ConfigPartitionWriteGuard<'p>(&'p ConfigPartition);
 
-impl<'p> Drop for ConfigPartitionWriteGuard<'p> {
+impl Drop for ConfigPartitionWriteGuard<'_> {
     fn drop(&mut self) {
         let mut writer_count = self.0.writer_count.lock().unwrap();
         if self.0.protected && *writer_count == 1 {
diff --git a/crates/rugpi-common/src/utils/const_helpers.rs b/crates/rugpi-common/src/utils/const_helpers.rs
index c1773fd..7ff4279 100644
--- a/crates/rugpi-common/src/utils/const_helpers.rs
+++ b/crates/rugpi-common/src/utils/const_helpers.rs
@@ -1,7 +1,7 @@
 //! Macros for dealing with limitations of constant functions.
-#[allow(unused_macros)]
 
 /// Constant unwrapping of options.
+#[expect(unused_macros, reason = "not currently used")]
 macro_rules! const_unwrap_option {
     ($value:expr) => {
         match $value {
diff --git a/crates/rugpi-ctrl/src/cli.rs b/crates/rugpi-ctrl/src/cli.rs
index b2af24d..c715aa5 100644
--- a/crates/rugpi-ctrl/src/cli.rs
+++ b/crates/rugpi-ctrl/src/cli.rs
@@ -116,9 +116,7 @@ pub fn main() -> SystemResult<()> {
                         None => {
                             let Some(entry) = system
                                 .boot_entries()
-                                .iter()
-                                .filter(|(_, entry)| !entry.active())
-                                .next()
+                                .iter().find(|(_, entry)| !entry.active())
                             else {
                                 bail!("unable to find an entry");
                             };
diff --git a/crates/rugpi-ctrl/src/utils.rs b/crates/rugpi-ctrl/src/utils.rs
index 6e66397..7a022c9 100644
--- a/crates/rugpi-ctrl/src/utils.rs
+++ b/crates/rugpi-ctrl/src/utils.rs
@@ -23,7 +23,7 @@ pub fn reboot() -> SystemResult<()> {
                 nix::libc::LINUX_REBOOT_MAGIC1,
                 nix::libc::LINUX_REBOOT_MAGIC2,
                 nix::libc::LINUX_REBOOT_CMD_RESTART2,
-                b"\0".as_ptr(),
+                c"",
             );
         }
     } else {