error: unused extern crate
  --> $DIR/extern-crate-idiomatic-in-2018.rs:22:1
   |
LL | extern crate edition_lint_paths;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
   |
note: lint level defined here
  --> $DIR/extern-crate-idiomatic-in-2018.rs:19:9
   |
LL | #![deny(rust_2018_idioms)]
   |         ^^^^^^^^^^^^^^^^
   = note: #[deny(unused_extern_crates)] implied by #[deny(rust_2018_idioms)]

error: `extern crate` is not idiomatic in the new edition
  --> $DIR/extern-crate-idiomatic-in-2018.rs:25:1
   |
LL | extern crate edition_lint_paths as bar;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert it to a `use`

error: aborting due to 2 previous errors