Fix tests on nightly (rust-lang#378)

alexcrichton · web-flow · commit 3a5ab60a4f3e · 2018-03-16T13:06:07.000-05:00
diff --git a/crates/stdsimd/src/lib.rs b/crates/stdsimd/src/lib.rs
@@ -21,7 +21,7 @@ extern crate libc;
 extern crate std as _std;
 
 #[cfg(test)]
-#[macro_use]
+#[macro_use(println, print)]
 extern crate std;
 
 #[path = "../../../stdsimd/mod.rs"]
