error: unused extern crate
  --> $DIR/extern-crate-idiomatic-in-2018.rs:12:1
   |
LL | extern crate edition_lint_paths;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unused
   |
note: the lint level is defined here
  --> $DIR/extern-crate-idiomatic-in-2018.rs:9:9
   |
LL | #![deny(rust_2018_idioms)]
   |         ^^^^^^^^^^^^^^^^
   = note: `#[deny(unused_extern_crates)]` implied by `#[deny(rust_2018_idioms)]`
help: remove the unused `extern crate`
   |
LL - extern crate edition_lint_paths;
   |

error: aborting due to 1 previous error