use expect(incomplete_feature) instead of allow in tail call tests

tests/ui/explicit-tail-calls/become-macro.rs

@@ -1,5 +1,5 @@
 //@ check-pass
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls, decl_macro)]
 
 macro call($f:expr $(, $args:expr)* $(,)?) {

tests/ui/explicit-tail-calls/become-operator.fixed

@@ -1,5 +1,5 @@
 //@ run-rustfix
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 #![allow(unused)]
 use std::num::Wrapping;

tests/ui/explicit-tail-calls/become-operator.rs

@@ -1,5 +1,5 @@
 //@ run-rustfix
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 #![allow(unused)]
 use std::num::Wrapping;

tests/ui/explicit-tail-calls/become-outside.rs

@@ -1,5 +1,5 @@
 //@ revisions: constant array
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 #[cfg(constant)]

tests/ui/explicit-tail-calls/become-uncallable.fixed

@@ -1,5 +1,5 @@
 //@ run-rustfix
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 #![allow(unused)]
 

tests/ui/explicit-tail-calls/become-uncallable.rs

@@ -1,5 +1,5 @@
 //@ run-rustfix
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 #![allow(unused)]
 

tests/ui/explicit-tail-calls/closure.fixed

@@ -1,5 +1,5 @@
 //@ run-rustfix
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 fn a() {

tests/ui/explicit-tail-calls/closure.rs

@@ -1,5 +1,5 @@
 //@ run-rustfix
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 fn a() {

tests/ui/explicit-tail-calls/constck.rs

@@ -1,4 +1,4 @@
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 const fn f() {

tests/ui/explicit-tail-calls/ctfe-arg-bad-borrow.rs

@@ -1,4 +1,4 @@
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 pub const fn test(_: &Type) {

tests/ui/explicit-tail-calls/ctfe-arg-good-borrow.rs

@@ -1,5 +1,5 @@
 //@ check-pass
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 pub const fn test(x: &Type) {

tests/ui/explicit-tail-calls/ctfe-arg-move.rs

@@ -1,5 +1,5 @@
 //@ check-pass
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 pub const fn test(s: String) -> String {

tests/ui/explicit-tail-calls/ctfe-collatz-multi-rec.rs

@@ -1,5 +1,5 @@
 //@ run-pass
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 /// A very unnecessarily complicated "implementation" of the Collatz conjecture.

tests/ui/explicit-tail-calls/ctfe-id-unlimited.rs

@@ -1,6 +1,6 @@
 //@ revisions: become return
 //@ [become] run-pass
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 // This is an identity function (`|x| x`), but implemented using recursion.

tests/ui/explicit-tail-calls/ctfe-tail-call-panic.rs

@@ -1,4 +1,4 @@
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 pub const fn f() {

tests/ui/explicit-tail-calls/drop-order.rs

@@ -1,7 +1,7 @@
 // FIXME(explicit_tail_calls): enable this test once rustc_codegen_ssa supports tail calls
 //@ ignore-test: tail calls are not implemented in rustc_codegen_ssa yet, so this causes 🧊
 //@ run-pass
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 use std::cell::RefCell;
 

tests/ui/explicit-tail-calls/in-closure.rs

@@ -1,4 +1,4 @@
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 fn main() {

tests/ui/explicit-tail-calls/return-lifetime-sub.rs

@@ -1,5 +1,5 @@
 //@ check-pass
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 fn _f<'a>() -> &'a [u8] {

tests/ui/explicit-tail-calls/return-mismatches.rs

@@ -1,4 +1,4 @@
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 fn _f0<'a>() -> &'static [u8] {

tests/ui/explicit-tail-calls/signature-mismatch.rs

@@ -1,4 +1,4 @@
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 #![feature(c_variadic)]
 

tests/ui/explicit-tail-calls/unsafeck.rs

@@ -1,4 +1,4 @@
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(explicit_tail_calls)]
 
 const fn f() {