Engineer(s): Tim Fogarty 2022-01-24:  Target updated to 2022-01-28(+1 calendar weeks) Final ticket is in code review   2022-01-07: 2022-01-14 (+3 calendar weeks) Still have some old write concern jstest that aren't working. The plan is to put the remaining ticket into code review next week and create separate tickets for the above. These will not be part of this project, but added to the backlog. 2021-12-03: Target date updated to 2021-12-22 (+2 calendar weeks) TOOLS-2974 , testing for 5.1, still has system failures on some platforms for some test suites. The failures are due to not starting mongod correctly on these platforms or due to the switch to python3 for running resmoke (which was required for 5.1). Skunkworks is part of this update cycle, which is why the update is being filed on Dec 3 2021-11-30: Target date updated to 2021-12-10 (+2 calendar weeks) TOOLS-2974 , testing for 5.1, still has system failures on some platforms for some test suites. The failures are due to not starting mongod correctly on these platforms or due to the switch to python3 for running resmoke (which was required for 5.1). 2021-11-12: Target date updated to 2021-11-26 (+2 calendar weeks) No longer in scope: TOOLS-2975 Add tests for 5.1 with all feature flags MGOMIRROR-475 Add 5.1 with no feature flags to test matrix MGOMIRROR-476 Add 5.1 with all feature flags enabled to test matrix We've run into some complexity with TOOLS-2974 Add tests for 5.1 with no feature flags, which has made this a bit slower than expected 2021-10-29: Target date set for 2021-11-12 (4 calendar weeks) Likely to land as early as Nov 9 The work for this epic is entirely testing updates In Progress TOOLS-2974 Add tests for 5.1 with no feature flags. MGOMIRROR-475 Add 5.1 with no feature flags to test matrix