Split out termination_trait_test feature gate

src/test/compile-fail/feature-gate-termination_trait_test.rs

@@ -0,0 +1,22 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// compile-flags: --test
+
+fn main() {}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn it_works() -> Result<(), ()> {
+    //~^ ERROR functions used as tests must have signature fn() -> ()
+        Ok(())
+    }
+}

src/test/run-pass/rfc-1937-termination-trait/termination-trait-in-test.rs

@@ -10,7 +10,7 @@
 
 // compile-flags: --test
 
-#![feature(termination_trait)]
+#![feature(termination_trait_test)]
 #![feature(test)]
 
 extern crate test;