All canary builds that build autotest-tests-cheets (arc++?) are failing in build_packages because of  autotest-tests-cheets package.

https://uberchromegw.corp.google.com/i/chromeos/builders/caroline-release
https://uberchromegw.corp.google.com/i/chromeos/builders/veyron_jaq-release

autotest-tests-cheets-0.0.1-r503: ERROR:root:cheets_EnterpriseForceInstall: invalid syntax (enterprise_cheets_base.py, line 162)
autotest-tests-cheets-0.0.1-r503: Traceback (most recent call last):
autotest-tests-cheets-0.0.1-r503:   File "/build/caroline/tmp/portage/chromeos-base/autotest-tests-cheets-0.0.1-r503/work/autotest-work/client/bin/setup_job.py", line 75, in init_test
autotest-tests-cheets-0.0.1-r503:     exec import_stmt + '\n' + init_stmt in locals_dict, globals_dict
autotest-tests-cheets-0.0.1-r503:   File "<string>", line 1, in <module>
autotest-tests-cheets-0.0.1-r503:   File "/build/caroline/tmp/portage/chromeos-base/autotest-tests-cheets-0.0.1-r503/work/autotest-work/client/site_tests/cheets_EnterpriseForceInstall/cheets_EnterpriseForceInstall.py", line 8, in <module>
autotest-tests-cheets-0.0.1-r503:     from autotest_lib.client.common_lib.cros import enterprise_cheets_base
autotest-tests-cheets-0.0.1-r503:   File "/build/caroline/tmp/portage/chromeos-base/autotest-tests-cheets-0.0.1-r503/work/autotest-work/client/common_lib/cros/enterprise_cheets_base.py", line 162
autotest-tests-cheets-0.0.1-r503:     def _create_chrome(self, enroll, auto_login, **chrome_kargs)
autotest-tests-cheets-0.0.1-r503:                                                                ^
autotest-tests-cheets-0.0.1-r503: SyntaxError: invalid syntax
autotest-tests-cheets-0.0.1-r503: ERROR:root:cheets_EnterpriseLogin: invalid syntax (enterprise_cheets_base.py, line 162)
autotest-tests-cheets-0.0.1-r503: Traceback (most recent call last):
autotest-tests-cheets-0.0.1-r503:   File "/build/caroline/tmp/portage/chromeos-base/autotest-tests-cheets-0.0.1-r503/work/autotest-work/client/bin/setup_job.py", line 75, in init_test
autotest-tests-cheets-0.0.1-r503:     exec import_stmt + '\n' + init_stmt in locals_dict, globals_dict
autotest-tests-cheets-0.0.1-r503:   File "<string>", line 1, in <module>
autotest-tests-cheets-0.0.1-r503:   File "/build/caroline/tmp/portage/chromeos-base/autotest-tests-cheets-0.0.1-r503/work/autotest-work/client/site_tests/cheets_EnterpriseLogin/cheets_EnterpriseLogin.py", line 9, in <module>
autotest-tests-cheets-0.0.1-r503:     from autotest_lib.client.common_lib.cros import enterprise_cheets_base
autotest-tests-cheets-0.0.1-r503:   File "/build/caroline/tmp/portage/chromeos-base/autotest-tests-cheets-0.0.1-r503/work/autotest-work/client/common_lib/cros/enterprise_cheets_base.py", line 162
autotest-tests-cheets-0.0.1-r503:     def _create_chrome(self, enroll, auto_login, **chrome_kargs)
autotest-tests-cheets-0.0.1-r503:                                                                ^
autotest-tests-cheets-0.0.1-r503: SyntaxError: invalid syntax