api-error 0.1.3

A derive macro for attaching HTTP status codes and user-facing messages to Rust error types.
Documentation 
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error: this trait cannot be derived for unions
 --> tests/ui/api_error_on_union.rs:3:10
  |
3 | #[derive(Debug, thiserror::Error, ApiError)]
  |          ^^^^^

error: union as errors are not supported
 --> tests/ui/api_error_on_union.rs:4:1
  |
4 | / union MyError {
5 | |     field: i32,
6 | | }
  | |_^

error: ApiError can only be derived for structs and enums
 --> tests/ui/api_error_on_union.rs:4:7
  |
4 | union MyError {
  |       ^^^^^^^