diff --git a/crates/cli/src/main.rs b/crates/cli/src/main.rs
index 42df5ee6fb..a85f4d5d8c 100644
--- a/crates/cli/src/main.rs
+++ b/crates/cli/src/main.rs
@@ -238,7 +238,7 @@ fn main() -> io::Result<()> {
                             current_block = String::new();
                         } else if in_roc_block {
                             current_block.push_str(&line);
-                            current_block.push_str("\n");
+                            current_block.push('\n');
                         }
                     }
 
diff --git a/crates/compiler/can/src/def.rs b/crates/compiler/can/src/def.rs
index b740013e4c..2b3ea55011 100644
--- a/crates/compiler/can/src/def.rs
+++ b/crates/compiler/can/src/def.rs
@@ -2800,7 +2800,7 @@ pub fn report_unused_imports(
     }
 }
 
-fn decl_to_let_or_return<'a>(
+fn decl_to_let_or_return(
     decl: Declaration,
     loc_ret: Loc<Expr>,
     var_store: &mut VarStore,
diff --git a/crates/compiler/can/src/desugar.rs b/crates/compiler/can/src/desugar.rs
index 653da47b1c..bcedc212a6 100644
--- a/crates/compiler/can/src/desugar.rs
+++ b/crates/compiler/can/src/desugar.rs
@@ -181,7 +181,7 @@ fn desugar_value_def<'a>(
         Return(return_expr) => {
             let desugared_return_expr = &*env.arena.alloc(desugar_expr(env, scope, return_expr));
 
-            Return(&desugared_return_expr)
+            Return(desugared_return_expr)
         }
     }
 }
diff --git a/crates/compiler/can/src/scope.rs b/crates/compiler/can/src/scope.rs
index 0119b5fdd5..fe6608f4ff 100644
--- a/crates/compiler/can/src/scope.rs
+++ b/crates/compiler/can/src/scope.rs
@@ -471,7 +471,7 @@ impl Scope {
     where
         F: FnOnce(&mut Scope) -> T,
     {
-        let early_returns_snapshot = std::mem::replace(&mut self.early_returns, Vec::new());
+        let early_returns_snapshot = std::mem::take(&mut self.early_returns);
 
         let result = self.inner_def_scope(f);
 
diff --git a/crates/compiler/fmt/src/expr.rs b/crates/compiler/fmt/src/expr.rs
index 29257695cb..74912b5e8b 100644
--- a/crates/compiler/fmt/src/expr.rs
+++ b/crates/compiler/fmt/src/expr.rs
@@ -457,7 +457,7 @@ impl<'a> Formattable for Expr<'a> {
                 "LowLevelDbg should only exist after desugaring, not during formatting"
             ),
             Return(return_value, after_return) => {
-                fmt_return(buf, return_value, &after_return, parens, newlines, indent);
+                fmt_return(buf, return_value, after_return, parens, newlines, indent);
             }
             If {
                 if_thens: branches,