crud_ops_do_not_throw_locktimeout.js

• SERVER-42951 introduced a new test that waits on failpoint behavior not available in v4.2. Should add the 'requires_fcv_44' tag.

views_aggregation.js

• SERVER-7568 made a change to the expected value of explainPlan.stages[0].$cursor.executionStats.nReturned. Should add the 'requires_fcv_44' tag.

dbref3.js

• SERVER-42421 allowed certain field names to have prefix '$'. This should add 'requires_fcv_44' tag.

explain_shell_helpers.js

• SERVER-42905 made a change to the expected value of explain.stages.length. Should add the 'requires_fcv_44' tag.

wildcard_index_covered_queries.js

• SERVER-42421 changed behavior that dollar-prefixed names should throw an error rather than produce a non-covered query. Should add the 'requires_fcv_44' tag.

create_existing_index.js

• SERVER-44403 changed behavior to allow confirming/conflicting index creation within a transaction. Should add the 'requires_fcv_44' tag.

views_validation.js

• SERVER-39524 allowed createCollection on namespace with a '$'. Should add the requires_fcv_44 tag