Fix tests for rustc_*

Author: Manishearth

src/test/compile-fail/move-fragments-1.rs

@@ -18,6 +18,8 @@
 // These are all fairly trivial cases: unused variables or direct
 // drops of substructure.
 
+#![feature(rustc_attrs)]
+
 pub struct D { d: isize }
 impl Drop for D { fn drop(&mut self) { } }
 

src/test/compile-fail/move-fragments-2.rs

@@ -18,6 +18,8 @@
 // These are checking that enums are tracked; note that their output
 // paths include "downcasts" of the path to a particular enum.
 
+#![feature(rustc_attrs)]
+
 use self::Lonely::{Zero, One, Two};
 
 pub struct D { d: isize }

src/test/compile-fail/move-fragments-3.rs

@@ -18,6 +18,8 @@
 // This checks the handling of `_` within variants, especially when mixed
 // with bindings.
 
+#![feature(rustc_attrs)]
+
 use self::Lonely::{Zero, One, Two};
 
 pub struct D { d: isize }

src/test/compile-fail/move-fragments-4.rs

@@ -19,6 +19,8 @@
 // early draft of the code did not properly traverse up through all of
 // the parents of the leaf fragment.)
 
+#![feature(rustc_attrs)]
+
 pub struct D { d: isize }
 impl Drop for D { fn drop(&mut self) { } }
 

src/test/compile-fail/move-fragments-5.rs

@@ -17,6 +17,8 @@
 
 // This is the first test that checks moving into local variables.
 
+#![feature(rustc_attrs)]
+
 pub struct D { d: isize }
 impl Drop for D { fn drop(&mut self) { } }
 

src/test/compile-fail/move-fragments-6.rs

@@ -18,6 +18,8 @@
 // Test that moving into a field (i.e. overwriting it) fragments the
 // receiver.
 
+#![feature(rustc_attrs)]
+
 use std::mem::drop;
 
 pub struct Pair<X,Y> { x: X, y: Y }

src/test/compile-fail/move-fragments-7.rs

@@ -19,6 +19,8 @@
 // both moving out of the structure (i.e. reading `*p.x`) and writing
 // into the container (i.e. writing `*p.x`).
 
+#![feature(rustc_attrs)]
+
 pub struct D { d: isize }
 impl Drop for D { fn drop(&mut self) { } }
 

src/test/compile-fail/move-fragments-8.rs

@@ -22,6 +22,8 @@
 // also that in this case we cannot do a move out of `&T`, so we only
 // test writing `*p.x` here.
 
+#![feature(rustc_attrs)]
+
 pub struct D { d: isize }
 impl Drop for D { fn drop(&mut self) { } }
 

src/test/compile-fail/move-fragments-9.rs

@@ -14,6 +14,8 @@
 // Note also that the `test_move_array_then_overwrite` tests represent
 // cases that we probably should make illegal.
 
+#![feature(rustc_attrs)]
+
 pub struct D { d: isize }
 impl Drop for D { fn drop(&mut self) { } }
 

src/test/compile-fail/rustc-error.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(rustc_attrs)]
+
 #[rustc_error]
 fn main() {
     //~^ ERROR compilation successful

src/test/compile-fail/variance-associated-types.rs

@@ -11,6 +11,8 @@
 // Test that the variance computation considers types/regions that
 // appear in projections to be invariant.
 
+#![feature(rustc_attrs)]
+
 trait Trait<'a> {
     type Type;
 

src/test/compile-fail/variance-object-types.rs

@@ -11,6 +11,8 @@
 // Test that Cell is considered invariant with respect to its
 // type.
 
+#![feature(rustc_attrs)]
+
 use std::cell::Cell;
 
 // For better or worse, associated types are invariant, and hence we

src/test/compile-fail/variance-regions-direct.rs

@@ -11,6 +11,8 @@
 // Test that we correctly infer variance for region parameters in
 // various self-contained types.
 
+#![feature(rustc_attrs)]
+
 // Regions that just appear in normal spots are contravariant:
 
 #[rustc_variance]

src/test/compile-fail/variance-regions-indirect.rs

@@ -12,6 +12,8 @@
 // case that involve multiple intricate types.
 // Try enums too.
 
+#![feature(rustc_attrs)]
+
 #[rustc_variance]
 enum Base<'a, 'b, 'c:'b, 'd> { //~ ERROR regions=[[+, -, o, *];[];[]]
     Test8A(extern "Rust" fn(&'a isize)),

src/test/compile-fail/variance-trait-object-bound.rs

@@ -14,6 +14,8 @@
 //
 // Issue #18262.
 
+#![feature(rustc_attrs)]
+
 use std::mem;
 
 trait T { fn foo(); }