error[E0080]: evaluation of `assert_zst::F::<u32>::V` failed
  --> $DIR/post_monomorphization_error_backtrace.rs:6:23
   |
LL |         const V: () = assert!(std::mem::size_of::<T>() == 0);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the evaluated program panicked at 'assertion failed: std::mem::size_of::<T>() == 0', $DIR/post_monomorphization_error_backtrace.rs:6:23
   |
   = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)

note: the above error was encountered while instantiating `fn assert_zst::<u32>`
  --> $DIR/post_monomorphization_error_backtrace.rs:18:5
   |
LL |     assert_zst::<U>()
   |     ^^^^^^^^^^^^^^^^^

error[E0080]: evaluation of `assert_zst::F::<i32>::V` failed
  --> $DIR/post_monomorphization_error_backtrace.rs:6:23
   |
LL |         const V: () = assert!(std::mem::size_of::<T>() == 0);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the evaluated program panicked at 'assertion failed: std::mem::size_of::<T>() == 0', $DIR/post_monomorphization_error_backtrace.rs:6:23
   |
   = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)

note: the above error was encountered while instantiating `fn assert_zst::<i32>`
  --> $DIR/post_monomorphization_error_backtrace.rs:18:5
   |
LL |     assert_zst::<U>()
   |     ^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0080`.