Major - P3 In the incomplete_upgrade_downgrade.js test, the following startup warnings are printed. Because the targetVersion warning will always be printed with the UUID warning, the UUID warning is redundant and should be removed.
[js_test:incomplete_upgrade_downgrade] 2017-10-05T10:22:03.305-0400 d20011| 2017-10-05T10:22:03.304-0400 I STORAGE [initandlisten] ** WARNING: A featureCompatibilityVersion upgrade or downgrade did not complete. [js_test:incomplete_upgrade_downgrade] 2017-10-05T10:22:03.305-0400 d20011| 2017-10-05T10:22:03.304-0400 I STORAGE [initandlisten] ** The current featureCompatibilityVersion is 3.4 and the targeted version is 3.4. [js_test:incomplete_upgrade_downgrade] 2017-10-05T10:22:03.305-0400 d20011| 2017-10-05T10:22:03.304-0400 I STORAGE [initandlisten] ** To fix this, use the setFeatureCompatibilityVersion command to resume upgrade to 3.6 or downgrade to 3.4. [js_test:incomplete_upgrade_downgrade] 2017-10-05T10:22:03.305-0400 d20011| 2017-10-05T10:22:03.305-0400 I STORAGE [initandlisten] ** WARNING: Using featureCompatibilityVersion 3.4, but the collection 'admin.foo' has a UUID. [js_test:incomplete_upgrade_downgrade] 2017-10-05T10:22:03.306-0400 d20011| 2017-10-05T10:22:03.305-0400 I STORAGE [initandlisten] ** To fix this, use the setFeatureCompatibilityVersion command to resume upgrade to 3.6 or downgrade to 3.4.