error: Agent item names must be unique. Duplicated names: [firstLane]
  --> tests/bad_agents/duplicate_names.rs:19:1
   |
19 | / #[allow(non_snake_case)]
20 | | pub struct RenameConvention {
21 | |     #[item(convention = "camel")]
22 | |     first_lane: ValueLane<i32>,
23 | |     firstLane: ValueLane<i32>,
24 | | }
   | |_^