remove forked argument in front of tests - does not play nicely with subprocvecenv in spawned processes; analog of forked in ddpg/test_smoke

.travis.yml

@@ -11,4 +11,4 @@ install:
 
 script:
     - flake8 . --show-source --statistics
-    - docker run baselines-test pytest -v --forked .
+    - docker run baselines-test pytest -v .

baselines/ddpg/test_smoke.py

@@ -1,7 +1,10 @@
-from baselines.run import main as M
+from multiprocessing import Process
+import baselines.run
 
 def _run(argstr):
-    M(('--alg=ddpg --env=Pendulum-v0 --num_timesteps=0 ' + argstr).split(' '))
+    p = Process(target=baselines.run.main, args=('--alg=ddpg --env=Pendulum-v0 --num_timesteps=0 ' + argstr).split(' '))
+    p.start()
+    p.join()
 
 def test_popart():
     _run('--normalize_returns=True --popart=True')