This test fails when parameterization is enabled with a tassert that the optimizer fails to generate a plan.

The query is 

find({a: {$in: [1, 2, 3]}}).sort({_id: 1}).hint({a: 1})

The predicate is translated as

PathGet [a]
PathTraverse [1]
PathCompare [EqMember]
FunctionCall [getParam]
|  Const [15] // type of array
Const [0] // parameter ID

When we try to convert this ABT to PartialSchemaRequirements, we fail because we only support building bounds for EqMember when the operand is a Constant.

This results in us failing to convert this filter to a SargableNode, which is necessary for the optimizer to ever emit an ixscan plan. With the hint, we disable collscan plans, so we fail to generate a plan.