diff --git a/.travis.yml b/.travis.yml
index 960b1e1..9d46a32 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,14 +5,7 @@ rust:
   - beta
   - nightly
 
-branches:
-  except:
-    - dev
-    - benches
-
-matrix:
+jobs:
   allow_failures:
     - rust: nightly
-
-os:
-  - linux
+  fast_finish: true
diff --git a/Cargo.toml b/Cargo.toml
index 1ea05db..4fb1950 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "json"
-version = "0.12.3"
+version = "0.12.4"
 authors = ["Maciej Hirsz <hello@maciej.codes>"]
 description = "JSON implementation in Rust"
 repository = "https://github.com/maciejhirsz/json-rust"
diff --git a/src/lib.rs b/src/lib.rs
index 40f6869..ec925ef 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -310,7 +310,7 @@ macro_rules! array {
 
     // Construct the actual array
     (@END $( $i:expr, )*) => ({
-        let size = 0 $( + {let _ = || $i; 1} )*;
+        let size = 0 $( + {let _ = &$i; 1} )*;
         let mut array = Vec::with_capacity(size);
 
         $(
@@ -404,7 +404,7 @@ macro_rules! object {
 
     // Construct the actual object
     (@END $( $k:expr => $v:expr, )*) => ({
-        let size = 0 $( + {let _ = || $k; 1} )*;
+        let size = 0 $( + {let _ = &$k; 1} )*;
         let mut object = $crate::object::Object::with_capacity(size);
 
         $(