fallout: run-fail tests that use box. (many/all could be ported to `Box::new` instead.)

src/test/run-fail/args-panic.rs

@@ -11,6 +11,9 @@
 
 // error-pattern:meep
 
+#![allow(unknown_features)]
+#![feature(box_syntax)]
+
 fn f(_a: int, _b: int, _c: Box<int>) { panic!("moop"); }
 
 fn main() { f(1, panic!("meep"), box 42); }

src/test/run-fail/panic-macro-any-wrapped.rs

@@ -10,6 +10,9 @@
 
 // error-pattern:panicked at 'Box<Any>'
 
+#![allow(unknown_features)]
+#![feature(box_syntax)]
+
 fn main() {
     panic!(box 612_i64);
 }

src/test/run-fail/panic-macro-any.rs

@@ -10,6 +10,9 @@
 
 // error-pattern:panicked at 'Box<Any>'
 
+#![allow(unknown_features)]
+#![feature(box_syntax)]
+
 fn main() {
     panic!(box 413i as Box<::std::any::Any+Send>);
 }

src/test/run-fail/unique-panic.rs

@@ -9,4 +9,8 @@
 // except according to those terms.
 
 // error-pattern: panic
+
+#![allow(unknown_features)]
+#![feature(box_syntax)]
+
 fn main() { box panic!(); }

src/test/run-fail/unwind-unique.rs

@@ -10,6 +10,8 @@
 
 // error-pattern:fail
 
+#![allow(unknown_features)]
+#![feature(box_syntax)]
 
 fn failfn() {
     panic!();