Update Rust crate thiserror to v2

[oxide-renovate]

This PR contains the following updates:

Package	Type	Update	Change
thiserror	workspace.dependencies	major	1.0 → 2.0

---

Release Notes

dtolnay/thiserror (thiserror)

v2.0.18

Compare Source

• Make compatible with project-level needless_lifetimes = "forbid" (#​443, thanks @​LucaCappelletti94)

v2.0.17

Compare Source

• Use differently named __private module per patch release (#​434)

v2.0.16

Compare Source

• Add to "no-std" crates.io category (#​429)

v2.0.15

Compare Source

• Prevent Error::provide API becoming unavailable from a future new compiler lint (#​427)

v2.0.14

Compare Source

• Allow build-script cleanup failure with NFSv3 output directory to be non-fatal (#​426)

v2.0.13

Compare Source

• Documentation improvements

v2.0.12

Compare Source

• Prevent elidable_lifetime_names pedantic clippy lint in generated impl (#​413)

v2.0.11

Compare Source

• Add feature gate to tests that use std (#​409, #​410, thanks @​Maytha8)

v2.0.10

Compare Source

• Support errors containing a generic type parameter's associated type in a field (#​408)

v2.0.9

Compare Source

• Work around missing_inline_in_public_items clippy restriction being triggered in macro-generated code (#​404)

v2.0.8

Compare Source

• Improve support for macro-generated derive(Error) call sites (#​399)

v2.0.7

Compare Source

• Work around conflict with #[deny(clippy::allow_attributes)] (#​397, thanks @​zertosh)

v2.0.6

Compare Source

• Suppress deprecation warning on generated From impls (#​396)

v2.0.5

Compare Source

• Prevent deprecation warning on generated impl for deprecated type (#​394)

v2.0.4

Compare Source

• Eliminate needless_lifetimes clippy lint in generated From impls (#​391, thanks @​matt-phylum)

v2.0.3

Compare Source

• Support the same Path field being repeated in both Debug and Display representation in error message (#​383)
• Improve error message when a format trait used in error message is not implemented by some field (#​384)

v2.0.2

Compare Source

• Fix hang on invalid input inside #[error(...)] attribute (#​382)

v2.0.1

Compare Source

• Support errors that contain a dynamically sized final field (#​375)
• Improve inference of trait bounds for fields that are interpolated multiple times in an error message (#​377)

v2.0.0

Compare Source

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)

  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.

  #[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)

  // 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)

  #[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, #​369, #​370, #​372)

Features

• Support disabling thiserror's standard library dependency by disabling the default "std" Cargo feature: thiserror = { version = "2", default-features = false } (#​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)

  #[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)

  #[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)

  #[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)

  #[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),
  }

---

Configuration

📅 Schedule: Branch creation - "after 8pm,before 6am" in timezone America/Los_Angeles, Automerge - "after 8pm,before 6am" in timezone America/Los_Angeles.

🚦 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.

[oxide-renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path Cargo.toml --package thiserror@1.0.69 --precise 2.0.18
    Updating crates.io index
error: failed to select a version for the requirement `thiserror = "^1.0"`
candidate versions found which didn't match: 2.0.18
location searched: crates.io index
required by package `libfalcon v0.1.0 (https://github.com/oxidecomputer/falcon?branch=main#f5f8fd52)`
    ... which satisfies git dependency `libfalcon` (locked to 0.1.0) of package `lab v0.1.0 (/tmp/renovate/repos/github/oxidecomputer/maghemite/lab)`