style: remove unneeded lifetimes from trait implementations

cli/src/formatter.rs

@@ -648,7 +648,7 @@ impl Write for FormatRecorder {
 
 struct RawEscapeSequenceRecorder<'a>(&'a mut FormatRecorder);
 
-impl<'a> Write for RawEscapeSequenceRecorder<'a> {
+impl Write for RawEscapeSequenceRecorder<'_> {
  fn write(&mut self, data: &[u8]) -> io::Result<usize> {
  self.0.push_op(FormatOp::RawEscapeSequence(data.to_vec()));
  Ok(data.len())

cli/src/graphlog.rs

@@ -57,7 +57,7 @@ impl<K: Clone> From<&Edge<K>> for Ancestor<K> {
  }
 }
 
-impl<'writer, K, R> GraphLog<K> for SaplingGraphLog<'writer, R>
+impl<K, R> GraphLog<K> for SaplingGraphLog<'_, R>
 where
  K: Clone + Eq + Hash,
  R: Renderer<K, Output = String>,

lib/src/default_index/revset_engine.rs

@@ -752,7 +752,7 @@ fn to_u32_generation_range(range: &Range<u64>) -> Result<Range<u32>, RevsetEvalu
  Ok(start..end)
 }
 
-impl<'index> EvaluationContext<'index> {
+impl EvaluationContext<'_> {
  fn evaluate(
  &self,
  expression: &ResolvedExpression,

lib/src/diff.rs

@@ -850,7 +850,7 @@ impl<'diff, 'input> DiffHunkIterator<'diff, 'input> {
  }
 }
 
-impl<'diff, 'input> Iterator for DiffHunkIterator<'diff, 'input> {
+impl<'input> Iterator for DiffHunkIterator<'_, 'input> {
  type Item = DiffHunk<'input>;
 
  fn next(&mut self) -> Option<Self::Item> {

lib/src/files.rs

@@ -109,7 +109,7 @@ where
  }
 }
 
-impl<'a, I> DiffLineIterator<'a, I> {
+impl<I> DiffLineIterator<'_, I> {
  /// Returns line number of the next hunk. After all hunks are consumed, this
  /// returns the next line number if the last hunk ends with newline.
  pub fn next_line_number(&self) -> DiffLineNumber {

lib/src/id_prefix.rs

@@ -448,7 +448,7 @@ pub struct IdIndexLookup<'i, 'q, K, P, S, const N: usize> {
  pos: usize, // may be index.len()
 }
 
-impl<'i, 'q, K, P, S, const N: usize> IdIndexLookup<'i, 'q, K, P, S, N>
+impl<K, P, S, const N: usize> IdIndexLookup<'_, '_, K, P, S, N>
 where
  K: ObjectId + Eq,
  S: IdIndexSource<P>,

lib/src/revset.rs

@@ -2225,7 +2225,7 @@ pub trait RevsetIteratorExt<'index, I> {
  fn reversed(self) -> ReverseRevsetIterator;
 }
 
-impl<'index, I: Iterator<Item = CommitId>> RevsetIteratorExt<'index, I> for I {
+impl<I: Iterator<Item = CommitId>> RevsetIteratorExt<'_, I> for I {
  fn commits(self, store: &Arc<Store>) -> RevsetCommitIterator<I> {
  RevsetCommitIterator {
  iter: self,

lib/src/workspace.rs

@@ -461,7 +461,7 @@ pub struct LockedWorkspace<'a> {
  locked_wc: Box<dyn LockedWorkingCopy>,
 }
 
-impl<'a> LockedWorkspace<'a> {
+impl LockedWorkspace<'_> {
  pub fn locked_wc(&mut self) -> &mut dyn LockedWorkingCopy {
  self.locked_wc.as_mut()
  }