fixup! Add await_holding_invalid_type lint

clippy_lints/src/await_holding_invalid.rs

@@ -146,15 +146,20 @@ declare_clippy_lint! {
     ///
     /// ```toml
     /// await-holding-invalid-types = [
+    ///   # You can specify a type name
     ///   "CustomLockType",
+    ///   # You can (optionally) specify a reason
+    ///   { type = "OtherCustomLockType", reason = "Relies on a thread local" }
     /// ]
     /// ```
     ///
     /// ```rust
     /// # async fn baz() {}
     /// struct CustomLockType;
+    /// struct OtherCustomLockType;
     /// async fn foo() {
     ///   let _x = CustomLockType;
+    ///   let _y = CustomLockType;
     ///   baz().await; // Lint violation
     /// }
     /// ```

tests/ui-toml/await_holding_invalid_type/await_holding_invalid_type.stderr

@@ -1,25 +1,25 @@
-error: `std::string::String` may not be held across an `await` point according to config
+error: `std::string::String` may not be held across an `await` point per `clippy.toml`
   --> $DIR/await_holding_invalid_type.rs:5:9
    |
 LL |     let _x = String::from("hello");
    |         ^^
    |
    = note: `-D clippy::await-holding-invalid-type` implied by `-D warnings`
-   = note: strings are bad (according to clippy.toml)
+   = note: strings are bad
 
-error: `std::net::Ipv4Addr` may not be held across an `await` point according to config
+error: `std::net::Ipv4Addr` may not be held across an `await` point per `clippy.toml`
   --> $DIR/await_holding_invalid_type.rs:10:9
    |
 LL |     let _x = Ipv4Addr::new(127, 0, 0, 1);
    |         ^^
 
-error: `std::string::String` may not be held across an `await` point according to config
+error: `std::string::String` may not be held across an `await` point per `clippy.toml`
   --> $DIR/await_holding_invalid_type.rs:31:13
    |
 LL |         let _x = String::from("hi!");
    |             ^^
    |
-   = note: strings are bad (according to clippy.toml)
+   = note: strings are bad
 
 error: aborting due to 3 previous errors