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Mention capping forbid lints

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I felt the description of forbid was misleading/incomplete without
mentioning how --cap-lints interacts with it.
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Dale Wijnand 2019-02-17 10:24:06 +00:00
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src/doc/rustc/src/lints/levels.md
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@ -90,7 +90,9 @@ This lint level gives you that.
'forbid' is a special lint level that's stronger than 'deny'. It's the same
as 'deny' in that a lint at this level will produce an error, but unlike the
'deny' level, the 'forbid' level can not be overridden to be anything lower
than an error.
than an error. However, lint levels may still be capped with `--cap-lints`
(see below) so `rustc --cap-lints warn` will make lints set to 'forbid' just
warn.
## Configuring warning levels