diff --git a/crates/ide/src/hover.rs b/crates/ide/src/hover.rs
index 49c9f487e0..94cf209e21 100644
--- a/crates/ide/src/hover.rs
+++ b/crates/ide/src/hover.rs
@@ -243,7 +243,9 @@ fn hover_ranged(
     })?;
     let res = match &expr_or_pat {
         Either::Left(ast::Expr::TryExpr(try_expr)) => hover_try_expr(sema, config, try_expr),
-        Either::Left(ast::Expr::PrefixExpr(prefix_expr)) if prefix_expr.op_kind() == Some(ast::UnaryOp::Deref) => {
+        Either::Left(ast::Expr::PrefixExpr(prefix_expr))
+            if prefix_expr.op_kind() == Some(ast::UnaryOp::Deref) =>
+        {
             hover_deref_expr(sema, config, prefix_expr)
         }
         _ => None,
@@ -355,7 +357,8 @@ fn hover_deref_expr(
     deref_expr: &ast::PrefixExpr,
 ) -> Option<HoverResult> {
     let inner_ty = sema.type_of_expr(&deref_expr.expr()?)?.original;
-    let TypeInfo { original, adjusted } = sema.type_of_expr(&ast::Expr::from(deref_expr.clone()))?;
+    let TypeInfo { original, adjusted } =
+        sema.type_of_expr(&ast::Expr::from(deref_expr.clone()))?;
 
     let mut res = HoverResult::default();
     let mut targets: Vec<hir::ModuleDef> = Vec::new();
@@ -366,7 +369,7 @@ fn hover_deref_expr(
     };
     walk_and_push_ty(sema.db, &inner_ty, &mut push_new_def);
     walk_and_push_ty(sema.db, &original, &mut push_new_def);
-    
+
     res.markup = if let Some(adjusted_ty) = adjusted {
         walk_and_push_ty(sema.db, &adjusted_ty, &mut push_new_def);
         let original = original.display(sema.db).to_string();
@@ -375,7 +378,9 @@ fn hover_deref_expr(
         let type_len = "Type: ".len();
         let coerced_len = "Coerced to: ".len();
         let deref_len = "Derefenced from: ".len();
-        let max_len = (original.len() + type_len).max(adjusted.len() + coerced_len).max(inner.len() + deref_len);
+        let max_len = (original.len() + type_len)
+            .max(adjusted.len() + coerced_len)
+            .max(inner.len() + deref_len);
         format!(
             "{bt_start}Type: {:>apad$}\nCoerced to: {:>opad$}\nDerefenced from: {:>ipad$}\n{bt_end}",
             original,
@@ -4511,12 +4516,13 @@ fn foo() -> Option<()> {
         );
     }
 
-
     #[test]
     fn hover_deref_expr() {
         check_hover_range(
             r#"
-//- minicore: deref 
+//- minicore: deref
+use core::ops::Deref;
+
 struct DerefExample<T> {
     value: T
 }
@@ -4547,19 +4553,21 @@ fn foo() {
     fn hover_deref_expr_with_coercion() {
         check_hover_range(
             r#"
-//- minicore: deref 
+//- minicore: deref
+use core::ops::Deref;
+
 struct DerefExample<T> {
     value: T
 }
- 
+
 impl<T> Deref for DerefExample<T> {
     type Target = T;
- 
+
     fn deref(&self) -> &Self::Target {
         &self.value
     }
 }
- 
+
 fn foo() {
     let x = DerefExample { value: &&&&&0 };
     let y: &i32 = $0*x$0;