error: Undefined Behavior: constructing invalid value: encountered a dangling reference (address $HEX is unallocated)
  --> $DIR/branchless-select-i128-pointer.rs:LL:CC
   |
LL | /             transmute::<_, &str>(
LL | |
LL | |                 !mask & transmute::<_, TwoPtrs>("false !")
LL | |                     | mask & transmute::<_, TwoPtrs>("true !"),
LL | |             )
   | |_____________^ constructing invalid value: encountered a dangling reference (address $HEX is unallocated)
   |
   = 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: BACKTRACE:
   = note: inside `main` at $DIR/branchless-select-i128-pointer.rs:LL:CC

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

error: aborting due to previous error