diff --git a/src/expr.rs b/src/expr.rs
index a297b00a5f2..6a6e982912a 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -75,7 +75,7 @@ pub fn format_expr(
         ast::ExprKind::Call(ref callee, ref args) => {
             let inner_span = mk_sp(callee.span.hi(), expr.span.hi());
             let callee_str = callee.rewrite(context, shape)?;
-            rewrite_call(context, &callee_str, &args, inner_span, shape)
+            rewrite_call(context, &callee_str, args, inner_span, shape)
         }
         ast::ExprKind::Paren(ref subexpr) => rewrite_paren(context, subexpr, shape),
         ast::ExprKind::Binary(ref op, ref lhs, ref rhs) => {
@@ -101,7 +101,7 @@ pub fn format_expr(
             shape,
         ),
         ast::ExprKind::Tup(ref items) => {
-            rewrite_tuple(context, &ptr_vec_to_ref_vec(&items), expr.span, shape)
+            rewrite_tuple(context, &ptr_vec_to_ref_vec(items), expr.span, shape)
         }
         ast::ExprKind::If(..) |
         ast::ExprKind::IfLet(..) |
@@ -355,7 +355,7 @@ where
             .unwrap_or(false);
         if !rhs_result.contains('\n') || allow_same_line {
             let one_line_width = last_line_width(&lhs_result) + infix.len()
-                + first_line_width(&rhs_result) + suffix.len();
+                + first_line_width(rhs_result) + suffix.len();
             if one_line_width <= shape.width {
                 return Some(format!("{}{}{}{}", lhs_result, infix, rhs_result, suffix));
             }
@@ -2004,7 +2004,7 @@ pub fn rewrite_call(
     rewrite_call_inner(
         context,
         callee,
-        &ptr_vec_to_ref_vec(&args),
+        &ptr_vec_to_ref_vec(args),
         span,
         shape,
         context.config.fn_call_width(),
diff --git a/src/imports.rs b/src/imports.rs
index 699029e7151..a44206df049 100644
--- a/src/imports.rs
+++ b/src/imports.rs
@@ -292,7 +292,7 @@ impl<'a> FmtVisitor<'a> {
             }
             Some(ref s) => {
                 self.format_missing_with_indent(source!(self, span).lo());
-                self.buffer.push_str(&s);
+                self.buffer.push_str(s);
                 self.last_pos = source!(self, span).hi();
             }
             None => {
diff --git a/src/items.rs b/src/items.rs
index 989793cb6ba..c85f2fd5e62 100644
--- a/src/items.rs
+++ b/src/items.rs
@@ -215,7 +215,7 @@ impl<'a> FnSig<'a> {
                 unsafety: unsafety,
                 visibility: visibility.clone(),
             },
-            visit::FnKind::Method(_, ref method_sig, vis, _) => {
+            visit::FnKind::Method(_, method_sig, vis, _) => {
                 let mut fn_sig = FnSig::from_method_sig(method_sig, generics);
                 fn_sig.defaultness = defualtness;
                 if let Some(vis) = vis {
@@ -2318,16 +2318,16 @@ fn rewrite_generics_inner(
     impl<'a> Rewrite for GenericsArg<'a> {
         fn rewrite(&self, context: &RewriteContext, shape: Shape) -> Option<String> {
             match *self {
-                GenericsArg::Lifetime(ref lifetime) => lifetime.rewrite(context, shape),
-                GenericsArg::TyParam(ref ty) => ty.rewrite(context, shape),
+                GenericsArg::Lifetime(lifetime) => lifetime.rewrite(context, shape),
+                GenericsArg::TyParam(ty) => ty.rewrite(context, shape),
             }
         }
     }
     impl<'a> Spanned for GenericsArg<'a> {
         fn span(&self) -> Span {
             match *self {
-                GenericsArg::Lifetime(ref lifetime) => lifetime.span(),
-                GenericsArg::TyParam(ref ty) => ty.span(),
+                GenericsArg::Lifetime(lifetime) => lifetime.span(),
+                GenericsArg::TyParam(ty) => ty.span(),
             }
         }
     }
diff --git a/src/macros.rs b/src/macros.rs
index 9d665c4a0b2..42c31da3503 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -70,10 +70,10 @@ pub enum MacroArg {
 
 impl Rewrite for MacroArg {
     fn rewrite(&self, context: &RewriteContext, shape: Shape) -> Option<String> {
-        match self {
-            &MacroArg::Expr(ref expr) => expr.rewrite(context, shape),
-            &MacroArg::Ty(ref ty) => ty.rewrite(context, shape),
-            &MacroArg::Pat(ref pat) => pat.rewrite(context, shape),
+        match *self {
+            MacroArg::Expr(ref expr) => expr.rewrite(context, shape),
+            MacroArg::Ty(ref ty) => ty.rewrite(context, shape),
+            MacroArg::Pat(ref pat) => pat.rewrite(context, shape),
         }
     }
 }
diff --git a/src/types.rs b/src/types.rs
index fd41fedabb6..a0b3a7c196a 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -695,7 +695,7 @@ impl Rewrite for ast::Ty {
             }
             ast::TyKind::Tup(ref items) => rewrite_tuple(
                 context,
-                &::utils::ptr_vec_to_ref_vec(&items),
+                &::utils::ptr_vec_to_ref_vec(items),
                 self.span,
                 shape,
             ),