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add more on applicabilities

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Mark Mansi 2018-05-22 15:00:27 -05:00 committed by Who? Me?!
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@ -134,6 +134,18 @@ error: aborting due to previous error
For more information about this error, try `rustc --explain E0999`. For more information about this error, try `rustc --explain E0999`.
``` ```
There are a few other [`Applicability`][appl] possibilities:
- `MachineApplicable`: Can be applied mechanically.
- `HasPlaceholders`: Cannot be applied mechanically and has placeholder text in
the suggestions. For example, "Try adding a type: \`let x: <type>\`".
- `MaybeIncorrect`: Cannot be applied mechanically because the suggestion may
or may not be a good one.
- `Unspecified`: Cannot be applied mechanically because we don't know which
of the above cases it falls into.
[appl]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_errors/enum.Applicability.html
## Lints ## Lints
The compiler linting infrastructure is defined in the [`rustc::lint`][rlint] The compiler linting infrastructure is defined in the [`rustc::lint`][rlint]