error: Undefined Behavior: constructing invalid value of type bool: encountered 0x03, but expected a boolean
  --> tests/fail/validity/match_binder_checks_validity2.rs:LL:CC
   |
LL |             _x => println!("hi from the void!"),
   |             ^^ 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

