ci: bah, just move everything into matrix:

PR-URL: #75

.travis.yml

@@ -1,24 +1,30 @@
 language: cpp
 compiler:
   - clang
-os:
-  - linux
-  - osx
 sudo: false
 cache: ccache
 matrix:
   include:
     - os: linux
       env: LINTER_ONLY=true
+      script:
+        - make lint
+    - os: linux
+      install:
+        - ./configure
+        - make -j2 V=
+      script:
+        - make -j2 test-ci
+    - os: osx
+      install:
+        - ./configure
+        - make -j2 V=
+      script:
+        - make -j2 test-ci
 before_install:
   - export HOMEBREW_NO_AUTO_UPDATE=1 # work around https://github.com/travis-ci/travis-ci/issues/7456
   - if [ $TRAVIS_OS_NAME = osx ]; then brew install ccache; fi
   - export PATH="/usr/local/opt/ccache/libexec:$PATH"
   - export CXX="ccache clang++ -Qunused-arguments"
   - export CC="ccache clang -Qunused-arguments"
-  - export JOBS=2
-install:
-  - ./configure
-  - make -j2 V=
-script:
-  - tools/run-ci.sh # do linter env variable detection
+  - export JOBS=2n