error: Undefined Behavior: memory access failed: attempting to access 4 bytes, but got null pointer
  --> tests/fail/dangling_pointers/null_pointer_write.rs:LL:CC
   |
LL |     unsafe { *std::ptr::null_mut() = 0i32 };
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Undefined Behavior occurred here
   |
   = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
   = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

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

error: aborting due to 1 previous error