diff --git a/crates/ruff_benchmark/benches/linter.rs b/crates/ruff_benchmark/benches/linter.rs
index 60c56093f4..fcc1d7da42 100644
--- a/crates/ruff_benchmark/benches/linter.rs
+++ b/crates/ruff_benchmark/benches/linter.rs
@@ -60,24 +60,25 @@ fn benchmark_linter(mut group: BenchmarkGroup, settings: &LinterSettings) {
                 // Parse the source.
                 let ast = parse_program_tokens(tokens.clone(), case.code(), false).unwrap();
 
-                b.iter(|| {
-                    let path = case.path();
-                    let result = lint_only(
-                        &path,
-                        None,
-                        settings,
-                        flags::Noqa::Enabled,
-                        &SourceKind::Python(case.code().to_string()),
-                        PySourceType::from(path.as_path()),
-                        ParseSource::Precomputed {
-                            tokens: &tokens,
-                            ast: &ast,
-                        },
-                    );
+                b.iter_batched(
+                    || (ast.clone(), tokens.clone()),
+                    |(ast, tokens)| {
+                        let path = case.path();
+                        let result = lint_only(
+                            &path,
+                            None,
+                            settings,
+                            flags::Noqa::Enabled,
+                            &SourceKind::Python(case.code().to_string()),
+                            PySourceType::from(path.as_path()),
+                            ParseSource::Precomputed { tokens, ast },
+                        );
 
-                    // Assert that file contains no parse errors
-                    assert_eq!(result.error, None);
-                });
+                        // Assert that file contains no parse errors
+                        assert_eq!(result.error, None);
+                    },
+                    criterion::BatchSize::SmallInput,
+                );
             },
         );
     }
diff --git a/crates/ruff_linter/src/linter.rs b/crates/ruff_linter/src/linter.rs
index c8bf5656f5..86d59b6d4e 100644
--- a/crates/ruff_linter/src/linter.rs
+++ b/crates/ruff_linter/src/linter.rs
@@ -146,7 +146,7 @@ pub fn check_path(
             .any(|rule_code| rule_code.lint_source().is_imports());
     if use_ast || use_imports || use_doc_lines {
         // Parse, if the AST wasn't pre-provided provided.
-        match tokens.into_ast_source(source_kind, source_type) {
+        match tokens.into_ast(source_kind, source_type) {
             Ok(python_ast) => {
                 let cell_offsets = source_kind.as_ipy_notebook().map(Notebook::cell_offsets);
                 let notebook_index = source_kind.as_ipy_notebook().map(Notebook::index);
@@ -684,23 +684,16 @@ This indicates a bug in Ruff. If you could open an issue at:
 }
 
 #[derive(Debug, Clone)]
-pub enum ParseSource<'a> {
+pub enum ParseSource {
     /// Extract the tokens and AST from the given source code.
     None,
     /// Use the precomputed tokens and AST.
-    Precomputed {
-        tokens: &'a [LexResult],
-        ast: &'a Suite,
-    },
+    Precomputed { tokens: Tokens, ast: Suite },
 }
 
-impl<'a> ParseSource<'a> {
+impl ParseSource {
     /// Convert to a [`TokenSource`], tokenizing if necessary.
-    fn into_token_source(
-        self,
-        source_kind: &SourceKind,
-        source_type: PySourceType,
-    ) -> TokenSource<'a> {
+    fn into_token_source(self, source_kind: &SourceKind, source_type: PySourceType) -> TokenSource {
         match self {
             Self::None => TokenSource::Tokens(ruff_python_parser::tokenize(
                 source_kind.source_code(),
@@ -712,17 +705,14 @@ impl<'a> ParseSource<'a> {
 }
 
 #[derive(Debug, Clone)]
-pub enum TokenSource<'a> {
+pub enum TokenSource {
     /// Use the precomputed tokens to generate the AST.
     Tokens(Tokens),
     /// Use the precomputed tokens and AST.
-    Precomputed {
-        tokens: &'a [LexResult],
-        ast: &'a Suite,
-    },
+    Precomputed { tokens: Tokens, ast: Suite },
 }
 
-impl TokenSource<'_> {
+impl TokenSource {
     /// Returns an iterator over the [`TokenKind`] and the corresponding range.
     ///
     /// [`TokenKind`]: ruff_python_parser::TokenKind
@@ -734,7 +724,7 @@ impl TokenSource<'_> {
     }
 }
 
-impl Deref for TokenSource<'_> {
+impl Deref for TokenSource {
     type Target = [LexResult];
 
     fn deref(&self) -> &Self::Target {
@@ -745,39 +735,20 @@ impl Deref for TokenSource<'_> {
     }
 }
 
-impl<'a> TokenSource<'a> {
+impl TokenSource {
     /// Convert to an [`AstSource`], parsing if necessary.
-    fn into_ast_source(
+    fn into_ast(
         self,
         source_kind: &SourceKind,
         source_type: PySourceType,
-    ) -> Result<AstSource<'a>, ParseError> {
+    ) -> Result<Suite, ParseError> {
         match self {
-            Self::Tokens(tokens) => Ok(AstSource::Ast(ruff_python_parser::parse_program_tokens(
+            Self::Tokens(tokens) => Ok(ruff_python_parser::parse_program_tokens(
                 tokens,
                 source_kind.source_code(),
                 source_type.is_ipynb(),
-            )?)),
-            Self::Precomputed { ast, .. } => Ok(AstSource::Precomputed(ast)),
-        }
-    }
-}
-
-#[derive(Debug, Clone)]
-pub enum AstSource<'a> {
-    /// Extract the AST from the given source code.
-    Ast(Suite),
-    /// Use the precomputed AST.
-    Precomputed(&'a Suite),
-}
-
-impl Deref for AstSource<'_> {
-    type Target = Suite;
-
-    fn deref(&self) -> &Self::Target {
-        match self {
-            Self::Ast(ast) => ast,
-            Self::Precomputed(ast) => ast,
+            )?),
+            Self::Precomputed { ast, .. } => Ok(ast),
         }
     }
 }
diff --git a/crates/ruff_server/src/session/settings.rs b/crates/ruff_server/src/session/settings.rs
index c929d0a9ce..a7faa5e3d0 100644
--- a/crates/ruff_server/src/session/settings.rs
+++ b/crates/ruff_server/src/session/settings.rs
@@ -353,10 +353,12 @@ mod tests {
     use insta::assert_debug_snapshot;
     use serde::de::DeserializeOwned;
 
+    #[cfg(not(windows))]
     use ruff_linter::registry::Linter;
 
     use super::*;
 
+    #[cfg(not(windows))]
     const VS_CODE_INIT_OPTIONS_FIXTURE: &str =
         include_str!("../../resources/test/fixtures/settings/vs_code_initialization_options.json");
     const GLOBAL_ONLY_INIT_OPTIONS_FIXTURE: &str =
@@ -368,7 +370,8 @@ mod tests {
         serde_json::from_str(content).expect("test fixture JSON should deserialize")
     }
 
-    #[cfg_attr(not(windows), test)]
+    #[cfg(not(windows))]
+    #[test]
     fn test_vs_code_init_options_deserialize() {
         let options: InitializationOptions = deserialize_fixture(VS_CODE_INIT_OPTIONS_FIXTURE);
 
@@ -553,7 +556,8 @@ mod tests {
         "###);
     }
 
-    #[cfg_attr(not(windows), test)]
+    #[cfg(not(windows))]
+    #[test]
     fn test_vs_code_workspace_settings_resolve() {
         let options = deserialize_fixture(VS_CODE_INIT_OPTIONS_FIXTURE);
         let AllSettings {