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introduce future-compatibility warning for forbidden lint groups #81556

Merged
merged 1 commit into from
Feb 5, 2021
Merged

introduce future-compatibility warning for forbidden lint groups #81556

merged 1 commit into from
Feb 5, 2021

Commits on Feb 2, 2021

  1. introduce future-compatibility warning for forbidden lint groups 

    We used to ignore `forbid(group)` scenarios completely. This changed
in rust-lang#78864, but that led to a number of regressions (rust-lang#80988, rust-lang#81218).

This PR introduces a future compatibility warning for the case where
a group is forbidden but then an individual lint within that group
is allowed. We now issue a FCW when we see the "allow", but permit
it to take effect.
    @nikomatsakis
    nikomatsakis committed Feb 2, 2021
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