warning: unused import: `std::option`
  --> $DIR/bad-lint-cap3.rs:7:5
   |
LL | use std::option;
   |     ^^^^^^^^^^^
   |
note: lint level defined here
  --> $DIR/bad-lint-cap3.rs:5:9
   |
LL | #![deny(warnings)]
   |         ^^^^^^^^
   = note: `#[warn(unused_imports)]` implied by `#[warn(warnings)]`