error handling

[sunliang711]

Hello, I want to embed rocket::serde::json::Error in thiserror,but i got error,the following is the detais:

use rocket::serde::json::Error as RocketJsonError;
use thiserror::Error;

#[derive(Error, Debug)]
pub enum Error {
    #[error(transparent)]
    PaserJsonError(#[from] RocketJsonError<'static>),
}

error[E0599]: the method `as_dyn_error` exists for reference `&rocket::serde::json::Error<'static>`, but its trait bounds were not satisfied
   --> src/utils/error.rs:4:10
    |
4   | #[derive(Error, Debug)]
    |          ^^^^^ method cannot be called on `&rocket::serde::json::Error<'static>` due to unsatisfied trait bounds
    |
   ::: /home/eagle/.cargo/registry/src/github.com-1ecc6299db9ec823/rocket-0.5.0-rc.1/src/serde/json.rs:129:1
    |
129 | pub enum Error<'a> {
    | ------------------
    | |
    | doesn't satisfy `rocket::serde::json::Error<'_>: AsDynError`
    | doesn't satisfy `rocket::serde::json::Error<'_>: StdError`
    |
    = note: the following trait bounds were not satisfied:
            `rocket::serde::json::Error<'_>: StdError`
            which is required by `rocket::serde::json::Error<'_>: AsDynError`
            `&rocket::serde::json::Error<'_>: StdError`
            which is required by `&rocket::serde::json::Error<'_>: AsDynError`
    = note: this error originates in the derive macro `Error` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0277]: `rocket::serde::json::Error<'_>` doesn't implement `std::fmt::Display`
 --> src/utils/error.rs:6:13
  |
4 | #[derive(Error, Debug)]
  |          ----- required by a bound introduced by this call
5 | pub enum Error {
6 |     #[error(transparent)]
  |             ^^^^^^^^^^^ `rocket::serde::json::Error<'_>` cannot be formatted with the default formatter
  |
  = help: the trait `std::fmt::Display` is not implemented for `rocket::serde::json::Error<'_>`
  = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead

Could anyone help me?

[kolbma]

Does it work with rocket::error::Error?

But the serde::json::Error, I believe, would have a lifetime of the request.
There is also available serde::serde_json if you want to do some own parsing.