modify code

[rust.git] / clippy_lints / src / mut_reference.rs

diff --git a/clippy_lints/src/mut_reference.rs b/clippy_lints/src/mut_reference.rs
index cea6fce119561225d5e7dab1d527aff3f089fff6..5c3e505c06c47821976f3377b1606a4d71c5d83e 100644 (file)
--- a/clippy_lints/src/mut_reference.rs
+++ b/clippy_lints/src/mut_reference.rs
@@ -7,15 +7,15 @@
 use std::iter;
 
 declare_clippy_lint! {
-    /// **What it does:** Detects passing a mutable reference to a function that only
+    /// ### What it does
+    /// Detects passing a mutable reference to a function that only
     /// requires an immutable reference.
     ///
-    /// **Why is this bad?** The mutable reference rules out all other references to
+    /// ### Why is this bad?
+    /// The mutable reference rules out all other references to
     /// the value. Also the code misleads about the intent of the call site.
     ///
-    /// **Known problems:** None.
-    ///
-    /// **Example:**
+    /// ### Example
     /// ```ignore
     /// // Bad
     /// my_vec.push(&mut value)
@@ -23,6 +23,7 @@
     /// // Good
     /// my_vec.push(&value)
     /// ```
+    #[clippy::version = "pre 1.29.0"]
     pub UNNECESSARY_MUT_PASSED,
     style,
     "an argument passed as a mutable reference although the callee only demands an immutable reference"
@@ -44,11 +45,11 @@ fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) {
                     );
                 }
             },
-            ExprKind::MethodCall(path, _, arguments, _) => {
+            ExprKind::MethodCall(path, arguments, _) => {
                 let def_id = cx.typeck_results().type_dependent_def_id(e.hir_id).unwrap();
                 let substs = cx.typeck_results().node_substs(e.hir_id);
                 let method_type = cx.tcx.type_of(def_id).subst(cx.tcx, substs);
-                check_arguments(cx, arguments, method_type, &path.ident.as_str(), "method")
+                check_arguments(cx, arguments, method_type, path.ident.as_str(), "method");
             },
             _ => (),
         }