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Questions tagged [thiserror]

9 questions
8
votes
1 answer

How do I print a backtrace without panicking using thiserror?

I am running a Rust warp webserver and I need more descriptive error messages. I'd like to print a backtrace or something similar so I can tell where the error started. I was using the Failure crate, but it is now deprecated so I migrated to…
Marty
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3
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1 answer

Does thiserror ship an unstable feature so that it does not work with stable rust release?

I am working on this repo. It builds with no problem on MacOS on a M2 Laptop; but when I try to build it on a Debian desktop, it shows this error: error[E0554]: `#![feature]` may not be used on the stable release channel -->…
chunjiw
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2
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2 answers

Error handling for applications: how to return a public message error instead of all the chain of errors and tracing it at the same time?

PROLOGUE I'm using async-graphql and I have hundreds of resolvers and for each resolver I would like to trace all the possible errors. In each method of my app I'm using anyhow::{Error}. Right now I have code similar to this for each…
Fred Hors
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2
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1 answer

Reuse error message from `thiserror` definition

I use thiserror crate for error handling inside my project. I declare an error like this #[derive(Debug, thiserror::Error)] enum CustomErrors { #[error("This is custom error one")] CustomErrorOne, #[error("This is custom error two")] …
Roman Mahotskyi
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0
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1 answer

Rust error handling - why does this give different output?

I'm having trouble getting miette to give consistent output. I'd expect the program below to give the same output whether I pass in "good" (which gives the fancy formatting I want) or "bad" (which prints a more debug-like error message), but one way…
John Graham
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0
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0 answers

Is `thiserror` impossible to use in stable Rust?

Using a dependency like eframe = "0.20.1" I'm running into compilation errors because of it's dependency Compiling thiserror v1.0.38 lib.rs `#![feature]` may not be used on the stable release channel It is because of this…
Lukas
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0
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1 answer

How to use thiserror to forward an error with a generic type parameter

Learning Rust, I am using the thiserror crate to wrap some exceptions. This is the exception I want to wrap from the unrar crate: #[derive(PartialEq)] pub struct UnrarError { pub code: Code, pub when: When, pub data: Option, } My…
caprica
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0
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0 answers

Compilation when trying to convert error from an external crate into my custom error type with `thiserror`

I am trying to use the thiserror crate to convert an error into my custom error but I am getting this compilation error message. The error I am trying to implement is the MiddlewareError from the Ethers-rs crate. Below is the compilation error I am…
0xKitsune
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1 answer

Issue with a `String` and `thiserror`: `as_dyn_error` exists for reference `&String`, but its trait bounds were not satisfied` in Rust

This is my first attempt to using thiserror in Rust. One of the error types I want to provide is a general string which has a message but no other fields. I've attempted to copy this from the thiserror docs, with the only exception being the use of…
Migwell
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