error: To enable serde, first enable the `serde1` feature of tarpc
 --> tests/compile_fail/no_serde1/no_explicit_serde_without_feature.rs:1:18
  |
1 | #[tarpc::service(derive_serde = true)]
  |                  ^^^^^^^^^^^^

error[E0433]: failed to resolve: use of undeclared type `FooRequest`
 --> tests/compile_fail/no_serde1/no_explicit_serde_without_feature.rs:7:13
  |
7 |     let x = FooRequest::Foo {};
  |             ^^^^^^^^^^ use of undeclared type `FooRequest`