error: abnormal termination: aborted execution: attempted to instantiate uninhabited type `!`
  --> $DIR/uninit_uninhabited_type.rs:LL:CC
   |
LL |     unsafe { std::mem::uninitialized::<!>() };
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ aborted execution: attempted to instantiate uninhabited type `!`
   |
   = note: inside `main` at $DIR/uninit_uninhabited_type.rs:LL:CC

note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace

error: aborting due to previous error