error: Undefined Behavior: type validation failed: encountered pointer to $HEX[ALLOC]<TAG>, but expected initialized plain (non-pointer) bytes
  --> $DIR/strict_provenance_transmute.rs:LL:CC
   |
LL |     let left_int: usize = mem::transmute(left);
   |                           ^^^^^^^^^^^^^^^^^^^^ type validation failed: encountered pointer to $HEX[ALLOC]<TAG>, but expected initialized plain (non-pointer) bytes
   |
   = 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: inside `deref` at $DIR/strict_provenance_transmute.rs:LL:CC
note: inside `main` at $DIR/strict_provenance_transmute.rs:LL:CC
  --> $DIR/strict_provenance_transmute.rs:LL:CC
   |
LL |         deref(ptr1, ptr2.with_addr(ptr1.addr()));
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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

error: aborting due to previous error