error: unknown lint: `test_unstable_lint`
  --> $DIR/deny-unstable-lint-inline.rs:4:1
   |
LL | #![allow(test_unstable_lint)]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: the `test_unstable_lint` lint is unstable
   = help: add `#![feature(test_unstable_lint)]` to the crate attributes to enable
note: the lint level is defined here
  --> $DIR/deny-unstable-lint-inline.rs:3:9
   |
LL | #![deny(unknown_lints)]
   |         ^^^^^^^^^^^^^

error: unknown lint: `test_unstable_lint`
  --> $DIR/deny-unstable-lint-inline.rs:4:1
   |
LL | #![allow(test_unstable_lint)]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: the `test_unstable_lint` lint is unstable
   = help: add `#![feature(test_unstable_lint)]` to the crate attributes to enable
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error: unknown lint: `test_unstable_lint`
  --> $DIR/deny-unstable-lint-inline.rs:4:1
   |
LL | #![allow(test_unstable_lint)]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: the `test_unstable_lint` lint is unstable
   = help: add `#![feature(test_unstable_lint)]` to the crate attributes to enable
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error: aborting due to 3 previous errors