error[E0277]: RPC params must be a #[schema] struct with named fields
 --> tests/ui/params.rs:6:25
  |
6 |     fn bad(&self, value:String)->sausage_plugin::Result<String> {Ok(value)}
  |                         ^^^^^^ the trait `Params` is not implemented for `std::string::String`
  |
help: the trait `Params` is implemented for `sausage_plugin::Empty`
 --> src/lib.rs
  |
  | impl Params for Empty {}
  | ^^^^^^^^^^^^^^^^^^^^^
note: required by a bound in `method`
 --> src/lib.rs
  |
  | pub fn method<P: Params, R: SchemaType>(doc: &mut Value, name: &str, docs: &str) {
  |                  ^^^^^^ required by this bound in `method`

error[E0277]: RPC params must be a #[schema] struct with named fields
 --> tests/ui/params.rs:6:25
  |
6 |     fn bad(&self, value:String)->sausage_plugin::Result<String> {Ok(value)}
  |                         ^^^^^^ the trait `Params` is not implemented for `std::string::String`
  |
help: the trait `Params` is implemented for `sausage_plugin::Empty`
 --> src/lib.rs
  |
  | impl Params for Empty {}
  | ^^^^^^^^^^^^^^^^^^^^^
note: required by a bound in `params_type`
 --> tests/ui/params.rs:3:1
  |
3 | #[sausage_plugin::rpc]
  | ^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `params_type`
  = note: this error originates in the attribute macro `sausage_plugin::rpc` (in Nightly builds, run with -Z macro-backtrace for more info)