error: `allow_internal_unsafe` allows defining macros using unsafe without triggering the `unsafe_code` lint at their call site
  --> $DIR/lint-forbid-internal-unsafe.rs:4:1
   |
LL | #[allow_internal_unsafe]
   | ^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/lint-forbid-internal-unsafe.rs:1:11
   |
LL | #![forbid(unsafe_code)]
   |           ^^^^^^^^^^^

warning: dereferencing a null pointer
  --> $DIR/lint-forbid-internal-unsafe.rs:15:26
   |
LL |     println!("{}", evil!(*(0 as *const u8)));
   |                          ^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
   |
   = note: `#[warn(deref_nullptr)]` on by default

error: aborting due to 1 previous error; 1 warning emitted