travis: trying anoter trick

.travis.yml

@@ -2,10 +2,6 @@ sudo: false
 dist: trusty
 language: c
 
-compiler:
-  - clang
-  - gcc
-
 addons:
   apt:
     sources:
@@ -30,15 +26,14 @@ env:
 
 matrix:
   include:
-    env:
-      - EMULATOR=1 HEADLESS=1 DEBUG_LINK=1
-    script:
-      - pipenv run ./script/cibuild && pipenv run script/test
-  exclude:
-    - compiler: clang
-      env: DEBUG_LINK=0
-    - compiler: clang
-      env: DEBUG_LINK=1
+    - name: "Emulator GCC"
+      env: EMULATOR=1 HEADLESS=1 DEBUG_LINK=1
+      compiler: gcc
+      script: pipenv run ./script/cibuild && pipenv run script/test
+    - name: "Emulator Clang"
+      env: EMULATOR=1 HEADLESS=1 DEBUG_LINK=1
+      compiler: clang
+      script: pipenv run ./script/cibuild && pipenv run script/test
 
 install:
   - curl -LO "https://github.com/google/protobuf/releases/download/v${PROTOBUF_VERSION}/protoc-${PROTOBUF_VERSION}-linux-x86_64.zip"