fack 0.2.0

Declarative error handling library with no_std support and composable code generation
Documentation 
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error: parameter declared more than once
 --> tests/ui/duplicate_format.rs:2:17
  |
2 | #[derive(Debug, Error)]
  |                 ^^^^^
  |
  = note: this error originates in the derive macro `Error` (in Nightly builds, run with -Z macro-backtrace for more info)

error: duplicate parameter
 --> tests/ui/duplicate_format.rs:2:17
  |
2 | #[derive(Debug, Error)]
  |                 ^^^^^
  |
  = note: this error originates in the derive macro `Error` (in Nightly builds, run with -Z macro-backtrace for more info)