error: unknown lint: `not_a_real_lint`
  --> $DIR/lint-unknown-lint.rs:3:10
   |
LL | #![allow(not_a_real_lint)]
   |          ^^^^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/lint-unknown-lint.rs:1:9
   |
LL | #![deny(unknown_lints)]
   |         ^^^^^^^^^^^^^

error: unknown lint: `dead_cod`
  --> $DIR/lint-unknown-lint.rs:5:9
   |
LL | #![deny(dead_cod)]
   |         ^^^^^^^^ help: did you mean: `dead_code`

error: unknown lint: `rust_2018_idiots`
  --> $DIR/lint-unknown-lint.rs:9:9
   |
LL | #![deny(rust_2018_idiots)]
   |         ^^^^^^^^^^^^^^^^ help: did you mean: `rust_2018_idioms`

error: aborting due to 3 previous errors