## XXXvlab: docker version 3.5.0 is bugged on its requirement list:
## XXXvlab: docker version 3.5.0 is bugged on its requirement list:
## error: Setup script exited with error in docker setup command: 'tests_require' must be a string or list of strings containing valid project/version requirement specifiers; Expected ',' or end-of-list in pytest==2.9.1; python_version == '3.3' at ; python_version == '3.3'
## error: Setup script exited with error in docker setup command: 'tests_require' must be a string or list of strings containing valid project/version requirement specifiers; Expected ',' or end-of-list in pytest==2.9.1; python_version == '3.3' at ; python_version == '3.3'