src/test/ui/lint/lint-ctypes-73251-1.stderr

   1 error: `extern` block uses type `impl Baz`, which is not FFI-safe
   2   --> $DIR/lint-ctypes-73251-1.rs:21:25
   3    |
   4 LL |     pub fn lint_me() -> <u32 as Foo>::Assoc;
   5    |                         ^^^^^^^^^^^^^^^^^^^ not FFI-safe
   6    |
   7 note: the lint level is defined here
   8   --> $DIR/lint-ctypes-73251-1.rs:2:9
   9    |
  10 LL | #![deny(improper_ctypes)]
  11    |         ^^^^^^^^^^^^^^^
  12    = note: opaque types have no C equivalent
  13
  14 error: aborting due to previous error
  15