https://redirect.github.com/dtolnay/thiserror">https://redirect.github.com/dtolnay/thiserror) | workspace.dependencies | major | `1` -> `2` | --- ### Release Notes <details> <summary>dtolnay/thiserror (thiserror)</summary> ### [`v2.0.11`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.11) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.10...2.0.11) - Add feature gate to tests that use std ([#409](https://redirect.github.com/dtolnay/thiserror/issues/409), [#410](https://redirect.github.com/dtolnay/thiserror/issues/410), thanks [@Maytha8](https://redirect.github.com/Maytha8)) ### [`v2.0.10`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.10) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.9...2.0.10) - Support errors containing a generic type parameter's associated type in a field ([#408](https://redirect.github.com/dtolnay/thiserror/issues/408)) ### [`v2.0.9`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.9) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.8...2.0.9) - Work around `missing_inline_in_public_items` clippy restriction being triggered in macro-generated code ([#404](https://redirect.github.com/dtolnay/thiserror/issues/404)) ### [`v2.0.8`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.8) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.7...2.0.8) - Improve support for macro-generated `derive(Error)` call sites ([#399](https://redirect.github.com/dtolnay/thiserror/issues/399)) ### [`v2.0.7`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.7) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.6...2.0.7) - Work around conflict with #\[deny(clippy::allow_attributes)] ([#397](https://redirect.github.com/dtolnay/thiserror/issues/397), thanks [@zertosh](https://redirect.github.com/zertosh)) ### [`v2.0.6`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.6) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.5...2.0.6) - Suppress deprecation warning on generated From impls ([#396](https://redirect.github.com/dtolnay/thiserror/issues/396)) ### [`v2.0.5`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.5) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.4...2.0.5) - Prevent deprecation warning on generated impl for deprecated type ([#394](https://redirect.github.com/dtolnay/thiserror/issues/394)) ### [`v2.0.4`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.4) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.3...2.0.4) - Eliminate needless_lifetimes clippy lint in generated `From` impls ([#391](https://redirect.github.com/dtolnay/thiserror/issues/391), thanks [@matt-phylum](https://redirect.github.com/matt-phylum)) ### [`v2.0.3`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.3) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.2...2.0.3) - Support the same Path field being repeated in both Debug and Display representation in error message ([#383](https://redirect.github.com/dtolnay/thiserror/issues/383)) - Improve error message when a format trait used in error message is not implemented by some field ([#384](https://redirect.github.com/dtolnay/thiserror/issues/384)) ### [`v2.0.2`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.2) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.1...2.0.2) - Fix hang on invalid input inside #\[error(...)] attribute ([#382](https://redirect.github.com/dtolnay/thiserror/issues/382)) ### [`v2.0.1`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.1) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/2.0.0...2.0.1) - Support errors that contain a dynamically sized final field ([#375](https://redirect.github.com/dtolnay/thiserror/issues/375)) - Improve inference of trait bounds for fields that are interpolated multiple times in an error message ([#377](https://redirect.github.com/dtolnay/thiserror/issues/377)) ### [`v2.0.0`](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.0) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.69...2.0.0) #### Breaking changes - Referencing keyword-named fields by a raw identifier like `{r#type}` inside a format string is no longer accepted; simply use the unraw name like `{type}` ([#347](https://redirect.github.com/dtolnay/thiserror/issues/347)) This aligns thiserror with the standard library's formatting macros, which gained support for implicit argument capture later than the release of this feature in thiserror 1.x. ```rust #[derive(Error, Debug)] #[error("... {type} ...")] // Before: {r#type} pub struct Error { pub r#type: Type, } ``` - Trait bounds are no longer inferred on fields whose value is shadowed by an explicit named argument in a format message ([#345](https://redirect.github.com/dtolnay/thiserror/issues/345)) ```rust // Before: impl<T: Octal> Display for Error<T> // After: impl<T> Display for Error<T> #[derive(Error, Debug)] #[error("{thing:o}", thing = "...")] pub struct Error<T> { thing: T, } ``` - Tuple structs and tuple variants can no longer use numerical `{0}` `{1}` access at the same time as supplying extra positional arguments for a format message, as this makes it ambiguous whether the number refers to a tuple field vs a different positional arg ([#354](https://redirect.github.com/dtolnay/thiserror/issues/354)) ```rust #[derive(Error, Debug)] #[error("ambiguous: {0} {}", $N)] // ^^^ Not allowed, use #[error("... {0} {n}", n = $N)] pub struct TupleError(i32); ``` - Code containing invocations of thiserror's `derive(Error)` must now have a direct dependency on the `thiserror` crate regardless of the error data structure's contents ([#368](https://redirect.github.com/dtolnay/thiserror/issues/368), [#369](https://redirect.github.com/dtolnay/thiserror/issues/369), [#370](https://redirect.github.com/dtolnay/thiserror/issues/370), [#372](https://redirect.github.com/dtolnay/thiserror/issues/372)) #### Features - Support disabling thiserror's standard library dependency by disabling the default "std" Cargo feature: `thiserror = { version = "2", default-features = false }` ([#373](https://redirect.github.com/dtolnay/thiserror/issues/373)) - Support using `r#source` as field name to opt out of a field named "source" being treated as an error's `Error::source()` ([#350](https://redirect.github.com/dtolnay/thiserror/issues/350)) ```rust #[derive(Error, Debug)] #[error("{source} ==> {destination}")] pub struct Error { r#source: char, destination: char, } let error = Error { source: 'S', destination: 'D' }; ``` - Infinite recursion in a generated Display impl now produces an `unconditional_recursion` warning ([#359](https://redirect.github.com/dtolnay/thiserror/issues/359)) ```rust #[derive(Error, Debug)] #[error("??? {self}")] pub struct Error; ``` - A new attribute `#[error(fmt = path::to::myfmt)]` can be used to write formatting logic for an enum variant out-of-line ([#367](https://redirect.github.com/dtolnay/thiserror/issues/367)) ```rust #[derive(Error, Debug)] pub enum Error { #[error(fmt = demo_fmt)] Demo { code: u16, message: Option<String> }, } fn demo_fmt(code: &u16, message: &Option<String>, formatter: &mut fmt::Formatter) -> fmt::Result { write!(formatter, "{code}")?; if let Some(msg) = message { write!(formatter, " - {msg}")?; } Ok(()) } ``` - Enums with an enum-level format message are now able to have individual variants that are `transparent` to supersede the enum-level message ([#366](https://redirect.github.com/dtolnay/thiserror/issues/366)) ```rust #[derive(Error, Debug)] #[error("my error {0}")] pub enum Error { Json(#[from] serde_json::Error), Yaml(#[from] serde_yaml::Error), #[error(transparent)] Other(#[from] anyhow::Error), } ``` ### [`v1.0.69`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.69) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.68...1.0.69) - Backport [2.0.2](https://redirect.github.com/dtolnay/thiserror/releases/tag/2.0.2) fixes ### [`v1.0.68`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.68) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.67...1.0.68) - Handle incomplete expressions more robustly in format arguments, such as while code is being typed ([#341](https://redirect.github.com/dtolnay/thiserror/issues/341), [#344](https://redirect.github.com/dtolnay/thiserror/issues/344)) ### [`v1.0.67`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.67) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.66...1.0.67) - Improve expression syntax support inside format arguments ([#335](https://redirect.github.com/dtolnay/thiserror/issues/335), [#337](https://redirect.github.com/dtolnay/thiserror/issues/337), [#339](https://redirect.github.com/dtolnay/thiserror/issues/339), [#340](https://redirect.github.com/dtolnay/thiserror/issues/340)) ### [`v1.0.66`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.66) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.65...1.0.66) - Improve compile error on malformed format attribute ([#327](https://redirect.github.com/dtolnay/thiserror/issues/327)) ### [`v1.0.65`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.65) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.64...1.0.65) - Ensure OUT_DIR is left with deterministic contents after build script execution ([#325](https://redirect.github.com/dtolnay/thiserror/issues/325)) ### [`v1.0.64`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.64) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.63...1.0.64) - Exclude derived impls from coverage instrumentation ([#322](https://redirect.github.com/dtolnay/thiserror/issues/322), thanks [@oxalica](https://redirect.github.com/oxalica)) ### [`v1.0.63`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.63) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.62...1.0.63) - Documentation improvements ### [`v1.0.62`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.62) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.61...1.0.62) - Support referring to nested tuple struct fields inside `#[error("…", …)]` attribute ([#309](https://redirect.github.com/dtolnay/thiserror/issues/309)) ### [`v1.0.61`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.61) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.60...1.0.61) - Use `core::fmt` and `core::panic` to facilitate `error_in_core` support ([#299](https://redirect.github.com/dtolnay/thiserror/issues/299), thanks [@jordens](https://redirect.github.com/jordens)) ### [`v1.0.60`](https://redirect.github.com/dtolnay/thiserror/releases/tag/1.0.60) [Compare Source](https://redirect.github.com/dtolnay/thiserror/compare/1.0.59...1.0.60) - Resolve unexpected_cfgs warning ([#298](https://redirect.github.com/dtolnay/thiserror/issues/298)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - "on the first day of the month" in timezone America/Los_Angeles, Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://redirect.github.com/renovatebot/renovate). GitOrigin-RevId: d435ec3d8d6bc3b185043b45c62d89abea835ee1