diff --git a/crates/hir-def/src/body/pretty.rs b/crates/hir-def/src/body/pretty.rs
index c3bd99b948..875c1a3ec4 100644
--- a/crates/hir-def/src/body/pretty.rs
+++ b/crates/hir-def/src/body/pretty.rs
@@ -35,11 +35,10 @@ pub(super) fn print_body_hir(db: &dyn DefDatabase, body: &Body, owner: DefWithBo
         DefWithBodyId::VariantId(it) => {
             let src = it.parent.child_source(db);
             let variant = &src.value[it.local_id];
-            let name = match &variant.name() {
+            match &variant.name() {
                 Some(name) => name.to_string(),
                 None => "_".to_string(),
-            };
-            format!("{name}")
+            }
         }
     };
 
@@ -445,7 +444,7 @@ impl<'a> Printer<'a> {
     fn print_block(
         &mut self,
         label: Option<&str>,
-        statements: &Box<[Statement]>,
+        statements: &[Statement],
         tail: &Option<la_arena::Idx<Expr>>,
     ) {
         self.whitespace();
@@ -455,7 +454,7 @@ impl<'a> Printer<'a> {
         w!(self, "{{");
         if !statements.is_empty() || tail.is_some() {
             self.indented(|p| {
-                for stmt in &**statements {
+                for stmt in statements {
                     p.print_stmt(stmt);
                 }
                 if let Some(tail) = tail {
diff --git a/crates/parser/src/parser.rs b/crates/parser/src/parser.rs
index 280416ae7c..ef413c6375 100644
--- a/crates/parser/src/parser.rs
+++ b/crates/parser/src/parser.rs
@@ -205,7 +205,7 @@ impl<'t> Parser<'t> {
             marker.bomb.defuse();
             marker = new_marker;
         };
-        self.pos += 1 as usize;
+        self.pos += 1;
         self.push_event(Event::FloatSplitHack { ends_in_dot });
         (ends_in_dot, marker)
     }
diff --git a/crates/parser/src/shortcuts.rs b/crates/parser/src/shortcuts.rs
index 47e4adcbbe..5cdb39700d 100644
--- a/crates/parser/src/shortcuts.rs
+++ b/crates/parser/src/shortcuts.rs
@@ -46,10 +46,8 @@ impl<'a> LexedStr<'a> {
                     // Tag the token as joint if it is float with a fractional part
                     // we use this jointness to inform the parser about what token split
                     // event to emit when we encounter a float literal in a field access
-                    if kind == SyntaxKind::FLOAT_NUMBER {
-                        if !self.text(i).ends_with('.') {
-                            res.was_joint();
-                        }
+                    if kind == SyntaxKind::FLOAT_NUMBER && !self.text(i).ends_with('.') {
+                        res.was_joint();
                     }
                 }
 
diff --git a/crates/syntax/src/ast/expr_ext.rs b/crates/syntax/src/ast/expr_ext.rs
index c43d0830b9..bab3c47348 100644
--- a/crates/syntax/src/ast/expr_ext.rs
+++ b/crates/syntax/src/ast/expr_ext.rs
@@ -366,8 +366,7 @@ impl ast::BlockExpr {
         match parent.kind() {
             FOR_EXPR | IF_EXPR => parent
                 .children()
-                .filter(|it| ast::Expr::can_cast(it.kind()))
-                .next()
+                .find(|it| ast::Expr::can_cast(it.kind()))
                 .map_or(true, |it| it == *self.syntax()),
             LET_ELSE | FN | WHILE_EXPR | LOOP_EXPR | CONST_BLOCK_PAT => false,
             _ => true,
diff --git a/crates/syntax/src/ast/make.rs b/crates/syntax/src/ast/make.rs
index cc0d7f4b48..8d2dc8709b 100644
--- a/crates/syntax/src/ast/make.rs
+++ b/crates/syntax/src/ast/make.rs
@@ -195,7 +195,7 @@ pub fn ty_alias(
         }
     }
 
-    s.push_str(";");
+    s.push(';');
     ast_from_text(&s)
 }
 
@@ -399,7 +399,7 @@ pub fn hacky_block_expr(
                     format_to!(buf, "    {t}\n")
                 } else if kind == SyntaxKind::WHITESPACE {
                     let content = t.text().trim_matches(|c| c != '\n');
-                    if content.len() >= 1 {
+                    if !content.is_empty() {
                         format_to!(buf, "{}", &content[1..])
                     }
                 }