Fix travis

Author: alexcrichton

.travis.yml

@@ -8,7 +8,7 @@ matrix:
     - rust: nightly
       name: "allocator api"
       script:
-        - cargo test --features allocator-api
+        - cargo test --features 'allocator-api global'
     - rust: nightly
       name: "wasm"
       install: rustup target add wasm32-unknown-unknown

tests/global.rs

@@ -1,4 +1,4 @@
-#![cfg(feature = "allocator-api")]
+#![cfg(all(feature = "allocator-api", feature = "global"))]
 #![feature(global_allocator)]
 
 extern crate dlmalloc;