Rollup merge of #156704 - cyrgani:unbox-tests, r=mu001999

reduce usage of `box_patterns` in tests

Part of #156110.

Author: JonathanBrouwer

tests/incremental/lint-unused-features.rs

@@ -4,7 +4,6 @@
 #![deny(unused_features)]
 
 // Used language features
-#![feature(box_patterns)]
 #![feature(decl_macro)]
 #![cfg_attr(all(), feature(rustc_attrs))]
 
@@ -14,11 +13,6 @@
 #![cfg_attr(all(), feature(allocator_api))]
 //[bfail]~^ ERROR feature `allocator_api` is declared but not used
 
-pub fn use_box_patterns(b: Box<i32>) -> i32 {
-    let box x = b;
-    x
-}
-
 macro m() {}
 pub fn use_decl_macro() {
     m!();

tests/run-make/unstable-feature-usage-metrics-incremental/main.rs

@@ -1,5 +1,5 @@
 #![feature(ascii_char)] // random lib feature
-#![feature(box_patterns)] // random lang feature
+#![feature(test_unstable_lint)] // random lang feature
 
 // picked arbitrary unstable features, just need a random lib and lang feature, ideally ones that
 // won't be stabilized any time soon so we don't have to update this test

tests/run-make/unstable-feature-usage-metrics-incremental/rmake.rs

@@ -69,7 +69,7 @@ fn test_metrics_dump() {
         let expected = serde_json::json!(
             {
                 "lib_features":[{"symbol":"ascii_char", "timestamp":null}],
-                "lang_features":[{"symbol":"box_patterns","since":null, "timestamp":null}]
+                "lang_features":[{"symbol":"test_unstable_lint","since":null, "timestamp":null}]
             }
         );
 

tests/run-make/unstable-feature-usage-metrics/lib.rs

@@ -1,5 +1,5 @@
 #![feature(ascii_char)] // random lib feature
-#![feature(box_patterns)] // random lang feature
+#![feature(test_unstable_lint)] // random lang feature
 
 // picked arbitrary unstable features, just need a random lib and lang feature, ideally ones that
 // won't be stabilized any time soon so we don't have to update this test

tests/run-make/unstable-feature-usage-metrics/rmake.rs

@@ -67,7 +67,7 @@ fn test_metrics_dump() {
         let expected = serde_json::json!(
             {
                 "lib_features":[{"symbol":"ascii_char", "timestamp":null}],
-                "lang_features":[{"symbol":"box_patterns","since":null, "timestamp":null}]
+                "lang_features":[{"symbol":"test_unstable_lint","since":null, "timestamp":null}]
             }
         );
 

tests/ui/binding/match-unique-bind.rs

@@ -4,15 +4,9 @@
 #![deny(unused_features)]
 
 // Used language features
-#![feature(box_patterns)]
 #![feature(decl_macro)]
 #![cfg_attr(all(), feature(rustc_attrs))]
 
-pub fn use_box_patterns(b: Box<i32>) -> i32 {
-    let box x = b;
-    x
-}
-
 macro m() {}
 pub fn use_decl_macro() {
     m!();