Thanks for reporting this issue. I will take a look at it.
> 在 2019年7月17日，上午11:50，Danny Chan <yuzhao....@gmail.com> 写道：
>
> I have the same issue ~~
>
> Best,
> Danny Chan
> 在 2019年7月17日 +0800 AM11:21，Haibo Sun <sunhaib...@163.com>，写道：
>> Hi, folks
>>
>>
>> I noticed that all of the Travis tests reported the following failure. Is
>> anyone working on this issue?
>>
>>
>> ___________________________________ summary
>> ____________________________________
>> ERROR: py27: InvocationError for command
>> /home/travis/build/flink-ci/flink/flink-python/dev/.conda/bin/python3.7 -m
>> virtualenv --no-download --python
>> /home/travis/build/flink-ci/flink/flink-python/dev/.conda/envs/2.7/bin/python2.7
>> py27 (exited with code 1)
>> py33: commands succeeded
>> ERROR: py34: InvocationError for command
>> /home/travis/build/flink-ci/flink/flink-python/dev/.conda/bin/python3.7 -m
>> virtualenv --no-download --python
>> /home/travis/build/flink-ci/flink/flink-python/dev/.conda/envs/3.4/bin/python3.4
>> py34 (exited with code 100)
>> py35: commands succeeded
>> py36: commands succeeded
>> py37: commands succeeded
>> ============tox checks... [FAILED]============
>> PYTHON exited with EXIT CODE: 1.
>> Trying to KILL watchdog (12990).
>>
>>
>> Best,
>> Haibo
