Fix compiler test list.

.travis.yml

@@ -11,7 +11,7 @@ d:
   # catching most DMD version related build failures early
   - dmd-2.074.1
   - dmd-2.070.2
-  - ldc-1.3.0
+  - ldc-1.3.0-beta2
   - ldc-1.2.0
   - ldc-1.1.0
   - ldc-1.0.0
@@ -28,6 +28,8 @@ env:
 
 matrix:
   allow_failures:
+    - d: dmd-beta
+    - d: ldc-1.3.0-beta2
   exclude:
     - env: CONFIG=libasync
     - os: osx
@@ -41,7 +43,11 @@ matrix:
     - os: osx
       d: dmd-2.071.2
     - os: osx
-      d: ldc-1.3.0
+      d: dmd-2.070.2
+    - os: osx
+      d: dmd-beta
+    - os: osx
+      d: ldc-1.3.0-beta2
     - os: osx
       d: ldc-1.2.0
     - os: osx