Top 3 Rust Error Projects

ariadne

18 1,552 6.4 Rust

A fancy diagnostics & error reporting crate (by zesterer)

Project mention: What languages have the best error message rendering styles in the terminal? | /r/ProgrammingLanguages | 2023-07-12

To complement, Nushell's error rendering is done with miette (whose name is a reference to this cute meme AFAIK). There is also another notable Rust error rendering lib: ariadne. So you can get the same beautiful error rendering in your own projects :D
enum-code

1 6 5.3 Rust

derive(Code) simplifies error handling by providing an easy-to-use enumeration of error codes

Project mention: Just open source a process macro「enum-code」for mapping enum values to error codes in Rust. | /r/rust | 2023-06-14

You can find the code on Github: https://github.com/Kunduin/enum-code and crates.io: https://crates.io/crates/enum-code.
InfluxDB

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winresult

1 0 2.0 Rust

Debug-friendly rust types/codes for windows results

Project mention: How to convert an enum to string in C++ | news.ycombinator.com | 2023-09-30

https://github.com/MaulingMonkey/winresult/
Another project: thindx. Bindings for d3dcompiler + d3d9 + xinput have a lot of enums and flags:
• 50 results in 49 files for flags!: https://github.com/search?q=repo%3AMaulingMonkey%2Fthindx%20...
• 77 results in 69 files for enumish!: https://github.com/search?q=repo%3AMaulingMonkey%2Fthindx+en...
• I still do things by hand somtimes, for reasons that elude my recollection: https://github.com/MaulingMonkey/thindx/blob/127d75f9de91f73...
And these are baby numbers compared to an actual professional gamedev codebase. Attention to detail makes me fairly comfortable with this much hand-generated nonsense in my one man show, but bugs still crop up... and there are people I would dread handing maintainence of such a project over to that I've worked with in a professional capacity, who simply do not care to exercise the same level of care as I do when editing such stuff.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-09-30.