Bump nightly toolchain used by the repo

Cargo.toml

@@ -23,7 +23,7 @@ solana = "2.3.4"
 # Specify Rust toolchains for rustfmt, clippy, and build.
 # Any unprovided toolchains default to stable.
 [workspace.metadata.toolchains]
-nightly = "nightly-2025-02-16"
+nightly = "nightly-2026-01-22"
 
 [workspace.metadata.spellcheck]
 config = "scripts/spellcheck.toml"

Makefile

@@ -1,4 +1,4 @@
-RUST_TOOLCHAIN_NIGHTLY = nightly-2025-02-16
+RUST_TOOLCHAIN_NIGHTLY = nightly-2026-01-22
 SOLANA_CLI_VERSION = 2.3.4
 
 nightly = +${RUST_TOOLCHAIN_NIGHTLY}

list-view/src/list_view.rs

@@ -57,7 +57,7 @@ impl<T: Pod, L: PodLength> ListView<T, L> {
     }
 
     /// Unpack a read-only buffer into a `ListViewReadOnly`
-    pub fn unpack(buf: &[u8]) -> Result<ListViewReadOnly<T, L>, ProgramError> {
+    pub fn unpack(buf: &[u8]) -> Result<ListViewReadOnly<'_, T, L>, ProgramError> {
         let layout = Self::calculate_layout(buf.len())?;
 
         // Slice the buffer to get the length prefix and the data.
@@ -87,7 +87,7 @@ impl<T: Pod, L: PodLength> ListView<T, L> {
     }
 
     /// Unpack the mutable buffer into a mutable `ListViewMut`
-    pub fn unpack_mut(buf: &mut [u8]) -> Result<ListViewMut<T, L>, ProgramError> {
+    pub fn unpack_mut(buf: &mut [u8]) -> Result<ListViewMut<'_, T, L>, ProgramError> {
         let view = Self::build_mut_view(buf)?;
         if (*view.length).into() > view.capacity {
             return Err(ListViewError::BufferTooSmall.into());
@@ -96,15 +96,15 @@ impl<T: Pod, L: PodLength> ListView<T, L> {
     }
 
     /// Initialize a buffer: sets `length = 0` and returns a mutable `ListViewMut`.
-    pub fn init(buf: &mut [u8]) -> Result<ListViewMut<T, L>, ProgramError> {
+    pub fn init(buf: &mut [u8]) -> Result<ListViewMut<'_, T, L>, ProgramError> {
         let view = Self::build_mut_view(buf)?;
         *view.length = L::try_from(0usize).map_err(ListViewError::from)?;
         Ok(view)
     }
 
     /// Internal helper to build a mutable view without validation or initialization.
     #[inline]
-    fn build_mut_view(buf: &mut [u8]) -> Result<ListViewMut<T, L>, ProgramError> {
+    fn build_mut_view(buf: &mut [u8]) -> Result<ListViewMut<'_, T, L>, ProgramError> {
         let layout = Self::calculate_layout(buf.len())?;
 
         // Split the buffer to get the length prefix and the data.

list-view/src/list_view_mut.rs

@@ -107,7 +107,7 @@ mod tests {
     fn init_view_mut<T: Pod, L: PodLength>(
         buffer: &mut Vec<u8>,
         capacity: usize,
-    ) -> ListViewMut<T, L> {
+    ) -> ListViewMut<'_, T, L> {
         let size = ListView::<T, L>::size_of(capacity).unwrap();
         buffer.resize(size, 0);
         ListView::<T, L>::init(buffer).unwrap()

pod/src/list/list_view.rs

@@ -61,7 +61,7 @@ impl<T: Pod, L: PodLength> ListView<T, L> {
     }
 
     /// Unpack a read-only buffer into a `ListViewReadOnly`
-    pub fn unpack(buf: &[u8]) -> Result<ListViewReadOnly<T, L>, ProgramError> {
+    pub fn unpack(buf: &[u8]) -> Result<ListViewReadOnly<'_, T, L>, ProgramError> {
         let layout = Self::calculate_layout(buf.len())?;
 
         // Slice the buffer to get the length prefix and the data.
@@ -90,7 +90,7 @@ impl<T: Pod, L: PodLength> ListView<T, L> {
     }
 
     /// Unpack the mutable buffer into a mutable `ListViewMut`
-    pub fn unpack_mut(buf: &mut [u8]) -> Result<ListViewMut<T, L>, ProgramError> {
+    pub fn unpack_mut(buf: &mut [u8]) -> Result<ListViewMut<'_, T, L>, ProgramError> {
         let view = Self::build_mut_view(buf)?;
         if (*view.length).into() > view.capacity {
             return Err(PodSliceError::BufferTooSmall.into());
@@ -100,7 +100,7 @@ impl<T: Pod, L: PodLength> ListView<T, L> {
 
     /// Internal helper to build a mutable view without validation or initialization.
     #[inline]
-    fn build_mut_view(buf: &mut [u8]) -> Result<ListViewMut<T, L>, ProgramError> {
+    fn build_mut_view(buf: &mut [u8]) -> Result<ListViewMut<'_, T, L>, ProgramError> {
         let layout = Self::calculate_layout(buf.len())?;
 
         // Split the buffer to get the length prefix and the data.
@@ -180,7 +180,7 @@ where
     PodSliceError: From<<L as TryFrom<usize>>::Error>,
 {
     /// Initialize a buffer: sets `length = 0` and returns a mutable `ListViewMut`.
-    pub fn init(buf: &mut [u8]) -> Result<ListViewMut<T, L>, ProgramError> {
+    pub fn init(buf: &mut [u8]) -> Result<ListViewMut<'_, T, L>, ProgramError> {
         let view = Self::build_mut_view(buf)?;
         *view.length = L::try_from(0).map_err(PodSliceError::from)?;
         Ok(view)

pod/src/list/list_view_mut.rs

@@ -114,7 +114,7 @@ mod tests {
     fn init_view_mut<T: Pod, L: PodLength>(
         buffer: &mut Vec<u8>,
         capacity: usize,
-    ) -> ListViewMut<T, L>
+    ) -> ListViewMut<'_, T, L>
     where
         PodSliceError: From<<L as TryFrom<usize>>::Error>,
     {