wherror 2.4.0

The same derive(Error) macro thiserror provides + the features you want!
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error: ambiguous reference to positional arguments by number in a tuple struct; change this to a named argument
 --> tests/ui/numbered-positional-tuple.rs:4:61
  |
4 | #[error("invalid rdo_lookahead_frames {0} (expected < {})", i32::MAX)]
  |                                                             ^^^^^^^^