warning: lint `bare_trait_object` has been renamed to `bare_trait_objects`
   |
   = note: requested on the command line with `-D bare_trait_object`

error: unused variable: `unused`
  --> $DIR/lint-renamed-cmdline.rs:8:17
   |
LL | fn main() { let unused = (); }
   |                 ^^^^^^ help: consider prefixing with an underscore: `_unused`
   |
note: lint level defined here
  --> $DIR/lint-renamed-cmdline.rs:7:8
   |
LL | #[deny(unused)]
   |        ^^^^^^
   = note: #[deny(unused_variables)] implied by #[deny(unused)]

error: aborting due to previous error