error: duplicate operation name `load`
 --> tests/ui/duplicate_operation.rs:6:8
  |
6 |     fn load(&self, other: String) -> OperationResult<String>;
  |        ^^^^

warning: unused import: `OperationResult`
 --> tests/ui/duplicate_operation.rs:1:21
  |
1 | use wip_interface::{OperationResult, interface};
  |                     ^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default