Update Rust crate thiserror to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
thiserror	dependencies	major	1.0.51 -> 2.0.0

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Release Notes

dtolnay/thiserror (thiserror)

v2.0.0

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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),
  }

v1.0.68

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• Handle incomplete expressions more robustly in format arguments, such as while code is being typed (#​341, #​344)

v1.0.67

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• Improve expression syntax support inside format arguments (#​335, #​337, #​339, #​340)

v1.0.66

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• Improve compile error on malformed format attribute (#​327)

v1.0.65

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• Ensure OUT_DIR is left with deterministic contents after build script execution (#​325)

v1.0.64

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• Exclude derived impls from coverage instrumentation (#​322, thanks @​oxalica)

v1.0.63

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• Documentation improvements

v1.0.62

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• Support referring to nested tuple struct fields inside #[error("…", …)] attribute (#​309)

v1.0.61

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• Use core::fmt and core::panic to facilitate error_in_core support (#​299, thanks @​jordens)

v1.0.60

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• Resolve unexpected_cfgs warning (#​298)

v1.0.59

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• Unblock testing of rustc debug-fmt-detail option (#​297)

v1.0.58

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• Make backtrace support available when using -Dwarnings (#​292)

v1.0.57

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• Generate more efficient Display impl for error message which do not contain any interpolated value (#​286, thanks @​nyurik)

v1.0.56

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• Update proc-macro2 to fix caching issue when using a rustc-wrapper such as sccache

v1.0.55

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• Work around improperly cached build script result by sccache – second attempt (#​280)

v1.0.54

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• Work around improperly cached build script result by sccache – first attempt (#​279)

v1.0.53

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• Reduce spurious rebuilds under RustRover IDE when using a nightly toolchain (#​270)

v1.0.52

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• Fix interaction with RUSTC_BOOTSTRAP (#​269)

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---

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[renovate]

⚠️ Artifact update problem

Renovate failed to update artifacts 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
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The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path llm-assistant/Cargo.toml --package thiserror@1.0.51 --precise 2.0.0
    Updating crates.io index
error: failed to select a version for the requirement `thiserror = "^1.0.40"`
candidate versions found which didn't match: 2.0.0
location searched: crates.io index
required by package `anthropic v0.0.7 (https://github.com/ofalvai/anthropic-rs.git?branch=main#c3d48caa)`
    ... which satisfies git dependency `anthropic` (locked to 0.0.7) of package `llm-toolkit v0.1.0 (/tmp/renovate/repos/github/ofalvai/homecooked/llm-toolkit)`

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path llm-toolkit/Cargo.toml --package thiserror@1.0.51 --precise 2.0.0
    Updating crates.io index
error: failed to select a version for the requirement `thiserror = "^1.0"`
candidate versions found which didn't match: 2.0.0
location searched: crates.io index
required by package `influxdb v0.7.1`
    ... which satisfies dependency `influxdb = "^0.7"` (locked to 0.7.1) of package `speedtest-to-influx v0.1.0 (/tmp/renovate/repos/github/ofalvai/homecooked/speedtest-to-influx)`

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