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.
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)
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Bumps thiserror from 1.0.68 to 2.0.0.
Release notes
Sourced from thiserror's releases.
... (truncated)
Commits
6097d61
Release 2.0.040113bd
Merge pull request #373 from dtolnay/nostdd8ed5fb
Allow disabling std dependency on 1.81+8277ec4
Merge pull request #372 from dtolnay/stdbacktraced6d896d
Access Backtrace exclusively through ::thiserrord14adfb
Merge pull request #371 from dtolnay/coreprovider2e99c51
Drop Provider API support in pre-1.81 nightliesbf3d6f3
Merge pull request #370 from dtolnay/stderrore0e9943
Access Error trait exclusively through ::thiserrordb7825e
Merge pull request #369 from dtolnay/stdpathDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
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