src/test/ui/editions/edition-feature-redundant.stderr

   1 warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
   2   --> $DIR/edition-feature-redundant.rs:4:12
   3    |
   4 LL | #![feature(rust_2018_preview)]
   5    |            ^^^^^^^^^^^^^^^^^
   6
   7 warning: 1 warning emitted
   8
   9 For more information about this error, try `rustc --explain E0705`.