Add expectations for deprecation to compile-fail tests

Author: Nemo157

src/test/compile-fail/no-implicit-prelude-nested.rs

@@ -15,6 +15,8 @@
 // fail with the same error message).
 
 #[no_implicit_prelude]
+//~^ WARNING: deprecated
+//~^^ WARNING: deprecated
 mod foo {
     mod baz {
         struct Test;
@@ -43,6 +45,8 @@ mod foo {
 
 fn qux() {
     #[no_implicit_prelude]
+    //~^ WARNING: deprecated
+    //~^^ WARNING: deprecated
     mod qux_inner {
         struct Test;
         impl Add for Test {} //~ ERROR: not in scope

src/test/compile-fail/no-implicit-prelude.rs

@@ -9,6 +9,8 @@
 // except according to those terms.
 
 #![no_implicit_prelude]
+//~^ WARN deprecated
+//~^^ WARN deprecated
 
 // Test that things from the prelude aren't in scope. Use many of them
 // so that renaming some things won't magically make this test fail