Update help text in inefficient_to_string

Co-Authored-By: Manish Goregaokar <[email protected]>

Author: HMPerson1

clippy_lints/src/methods/inefficient_to_string.rs

@@ -24,7 +24,7 @@ pub fn lint<'tcx>(cx: &LateContext<'_, 'tcx>, expr: &hir::Expr, arg: &hir::Expr,
                 &format!("calling `to_string` on `{}`", arg_ty),
                 |db| {
                     db.help(&format!(
-                        "`{}` implements `ToString` through the blanket impl, but `{}` specializes `ToString` directly",
+                        "`{}` implements `ToString` through a slower blanket impl, but `{}` has a fast specialization of `ToString`",
                         self_ty, deref_self_ty
                     ));
                     let mut applicability = Applicability::MachineApplicable;

tests/ui/inefficient_to_string.stderr

@@ -9,47 +9,47 @@ note: lint level defined here
    |
 LL | #![deny(clippy::inefficient_to_string)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   = help: `&str` implements `ToString` through the blanket impl, but `str` specializes `ToString` directly
+   = help: `&str` implements `ToString` through a slower blanket impl, but `str` has a fast specialization of `ToString`
 
 error: calling `to_string` on `&&&str`
   --> $DIR/inefficient_to_string.rs:13:21
    |
 LL |     let _: String = rrrstr.to_string();
    |                     ^^^^^^^^^^^^^^^^^^ help: try dereferencing the receiver: `(**rrrstr).to_string()`
    |
-   = help: `&&str` implements `ToString` through the blanket impl, but `str` specializes `ToString` directly
+   = help: `&&str` implements `ToString` through a slower blanket impl, but `str` has a fast specialization of `ToString`
 
 error: calling `to_string` on `&&std::string::String`
   --> $DIR/inefficient_to_string.rs:21:21
    |
 LL |     let _: String = rrstring.to_string();
    |                     ^^^^^^^^^^^^^^^^^^^^ help: try dereferencing the receiver: `(*rrstring).to_string()`
    |
-   = help: `&std::string::String` implements `ToString` through the blanket impl, but `std::string::String` specializes `ToString` directly
+   = help: `&std::string::String` implements `ToString` through a slower blanket impl, but `std::string::String` has a fast specialization of `ToString`
 
 error: calling `to_string` on `&&&std::string::String`
   --> $DIR/inefficient_to_string.rs:22:21
    |
 LL |     let _: String = rrrstring.to_string();
    |                     ^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing the receiver: `(**rrrstring).to_string()`
    |
-   = help: `&&std::string::String` implements `ToString` through the blanket impl, but `std::string::String` specializes `ToString` directly
+   = help: `&&std::string::String` implements `ToString` through a slower blanket impl, but `std::string::String` has a fast specialization of `ToString`
 
 error: calling `to_string` on `&&std::borrow::Cow<'_, str>`
   --> $DIR/inefficient_to_string.rs:30:21
    |
 LL |     let _: String = rrcow.to_string();
    |                     ^^^^^^^^^^^^^^^^^ help: try dereferencing the receiver: `(*rrcow).to_string()`
    |
-   = help: `&std::borrow::Cow<'_, str>` implements `ToString` through the blanket impl, but `std::borrow::Cow<'_, str>` specializes `ToString` directly
+   = help: `&std::borrow::Cow<'_, str>` implements `ToString` through a slower blanket impl, but `std::borrow::Cow<'_, str>` has a fast specialization of `ToString`
 
 error: calling `to_string` on `&&&std::borrow::Cow<'_, str>`
   --> $DIR/inefficient_to_string.rs:31:21
    |
 LL |     let _: String = rrrcow.to_string();
    |                     ^^^^^^^^^^^^^^^^^^ help: try dereferencing the receiver: `(**rrrcow).to_string()`
    |
-   = help: `&&std::borrow::Cow<'_, str>` implements `ToString` through the blanket impl, but `std::borrow::Cow<'_, str>` specializes `ToString` directly
+   = help: `&&std::borrow::Cow<'_, str>` implements `ToString` through a slower blanket impl, but `std::borrow::Cow<'_, str>` has a fast specialization of `ToString`
 
 error: aborting due to 6 previous errors