Diagnose when test features are missing
diff --git a/tests/test_grouping.rs b/tests/test_grouping.rs
index 2645cff..7d2bcc6 100644
--- a/tests/test_grouping.rs
+++ b/tests/test_grouping.rs
@@ -6,7 +6,6 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-#![cfg(all(feature = "extra-traits", feature = "full"))]
#![recursion_limit = "1024"]
#![feature(rustc_private)]
@@ -22,6 +21,7 @@
mod macros;
mod common;
+mod features;
fn expr<T: Into<Expr>>(t: T) -> Expr {
t.into()