Travis: only use jobs

Author: blueyed

.travis.yml

@@ -10,13 +10,6 @@ python:
   - '3.7'
 install:
   - python -m pip install --upgrade --pre tox
-env:
-  matrix:
-    # Coverage for:
-    # - pytester's LsofFdLeakChecker (can be done with lsof factor later).
-    - TOXENV=py27 PYTEST_COVERAGE=1
-    # Specialized factors for py37.
-    - env: TOXENV=py37-pexpect,py37-trial PYTEST_COVERAGE=1
 
 matrix:
   allow_failures:
@@ -25,6 +18,12 @@ matrix:
 
 jobs:
   include:
+    # Coverage for:
+    # - pytester's LsofFdLeakChecker (can be done with lsof factor later).
+    - env: TOXENV=py27 PYTEST_COVERAGE=1
+      python: '2.7'
+    # Specialized factors for py37.
+    - env: TOXENV=py37-pexpect,py37-trial PYTEST_COVERAGE=1
     - &test-macos
       # NOTE: (tests with) pexpect appear to be buggy on Travis,
       #       at least with coverage.