pytest plugin that shows environment variables when the build fails

conftest.py

def pytest_terminal_summary(terminalreporter, exitstatus):
    import os
    if exitstatus != 0 and 'JENKINS_URL' in os.environ:
        markup = {'yellow': True, 'bold': True}
        terminalreporter.write_sep("=", "ENVIRONMENT", **markup)
        for k, v in sorted(os.environ.items()):
            if k:
                terminalreporter.write_line('%r: %r' % (k, v), **markup)