{'goog:chromeOptions': {'binary': '/usr/bin/chromium-browser', 'prefs': {'disk-cache-size': 12096}, 'extensions': [], 'args': ['--proxy-server=localhost:42662', '--incognito', '--disable-plugins-discovery', '--start-maximized', '--profile-directory=Default', 'window-size=1366,768', '--user-agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36']}, 'platform': 'ANY', 'browserName': 'chrome', 'version': ''}
    self.start_session(capabilities, browser_profile)
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 245, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 314, in execute
    self.error_handler.check_response(response)
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: Chrome failed to start: exited abnormally
  (Driver info: chromedriver=2.38.552522 (437e6fbedfa8762dec75e2c5b3ddb86763dc9dcb),platform=Linux 4.4.0-128-generic x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 60.05 seconds
Build info: version: '3.12.0', revision: '7c6e0b3', time: '2018-05-08T15:15:08.936Z'
System info: host: '16716e4e3d0f', ip: '172.17.0.3', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-128-generic', java.version: '1.8.0_171'
Driver info: driver.version: unknown
Stacktrace:
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0 (NativeConstructorAccessorImpl.java:-2)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance (NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance (DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance (Constructor.java:423)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable (ErrorHandler.java:214)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed (ErrorHandler.java:166)
    at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$new$0 (JsonWireProtocolResponse.java:53)
    at org.openqa.selenium.remote.JsonWireProtocolResponse.lambda$getResponseFunction$2 (JsonWireProtocolResponse.java:91)
    at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$0 (ProtocolHandshake.java:123)
    at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
    at java.util.Spliterators$ArraySpliterator.tryAdvance (Spliterators.java:958)
    at java.util.stream.ReferencePipeline.forEachWithCancel (ReferencePipeline.java:126)
    at java.util.stream.AbstractPipeline.copyIntoWithCancel (AbstractPipeline.java:498)
    at java.util.stream.AbstractPipeline.copyInto (AbstractPipeline.java:485)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto (AbstractPipeline.java:471)
    at java.util.stream.FindOps$FindOp.evaluateSequential (FindOps.java:152)
    at java.util.stream.AbstractPipeline.evaluate (AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.findFirst (ReferencePipeline.java:464)
    at org.openqa.selenium.remote.ProtocolHandshake.createSession (ProtocolHandshake.java:126)
    at org.openqa.selenium.remote.ProtocolHandshake.createSession (ProtocolHandshake.java:73)
    at org.openqa.selenium.remote.server.RemoteSession$Factory.performHandshake (RemoteSession.java:145)
    at org.openqa.selenium.remote.server.ServicedSession$Factory.apply (ServicedSession.java:159)
    at org.openqa.selenium.remote.server.ActiveSessionFactory.lambda$apply$12 (ActiveSessionFactory.java:176)
    at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
    at java.util.stream.ReferencePipeline$11$1.accept (ReferencePipeline.java:373)
    at java.util.stream.ReferencePipeline$2$1.accept (ReferencePipeline.java:175)
    at java.util.Spliterators$ArraySpliterator.tryAdvance (Spliterators.java:958)
    at java.util.stream.ReferencePipeline.forEachWithCancel (ReferencePipeline.java:126)
    at java.util.stream.AbstractPipeline.copyIntoWithCancel (AbstractPipeline.java:498)
    at java.util.stream.AbstractPipeline.copyInto (AbstractPipeline.java:485)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto (AbstractPipeline.java:471)
    at java.util.stream.FindOps$FindOp.evaluateSequential (FindOps.java:152)
    at java.util.stream.AbstractPipeline.evaluate (AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.findFirst (ReferencePipeline.java:464)
    at org.openqa.selenium.remote.server.ActiveSessionFactory.apply (ActiveSessionFactory.java:179)
    at org.openqa.selenium.remote.server.NewSessionPipeline.lambda$null$2 (NewSessionPipeline.java:65)
    at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
    at java.util.stream.ReferencePipeline$2$1.accept (ReferencePipeline.java:175)
    at java.util.Collections$2.tryAdvance (Collections.java:4717)
    at java.util.stream.ReferencePipeline.forEachWithCancel (ReferencePipeline.java:126)
    at java.util.stream.AbstractPipeline.copyIntoWithCancel (AbstractPipeline.java:498)
    at java.util.stream.AbstractPipeline.copyInto (AbstractPipeline.java:485)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto (AbstractPipeline.java:471)
    at java.util.stream.FindOps$FindOp.evaluateSequential (FindOps.java:152)
    at java.util.stream.AbstractPipeline.evaluate (AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.findFirst (ReferencePipeline.java:464)
    at org.openqa.selenium.remote.server.NewSessionPipeline.lambda$createNewSession$3 (NewSessionPipeline.java:68)
    at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
    at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
    at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
    at java.util.stream.DistinctOps$1$2.accept (DistinctOps.java:175)
    at java.util.stream.ReferencePipeline$2$1.accept (ReferencePipeline.java:175)
    at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
    at java.util.stream.ReferencePipeline$2$1.accept (ReferencePipeline.java:175)
    at java.util.stream.Streams$StreamBuilderImpl.tryAdvance (Streams.java:405)
    at java.util.stream.Streams$ConcatSpliterator.tryAdvance (Streams.java:728)
    at java.util.stream.ReferencePipeline.forEachWithCancel (ReferencePipeline.java:126)
    at java.util.stream.AbstractPipeline.copyIntoWithCancel (AbstractPipeline.java:498)
    at java.util.stream.AbstractPipeline.copyInto (AbstractPipeline.java:485)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto (AbstractPipeline.java:471)
    at java.util.stream.FindOps$FindOp.evaluateSequential (FindOps.java:152)
    at java.util.stream.AbstractPipeline.evaluate (AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.findFirst (ReferencePipeline.java:464)
    at org.openqa.selenium.remote.server.NewSessionPipeline.createNewSession (NewSessionPipeline.java:71)
    at org.openqa.selenium.remote.server.commandhandler.BeginSession.execute (BeginSession.java:65)
    at org.openqa.selenium.remote.server.WebDriverServlet.lambda$handle$1 (WebDriverServlet.java:246)
    at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511)
    at java.util.concurrent.FutureTask.run (FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:624)
    at java.lang.Thread.run (Thread.java:748)