error: Undefined Behavior: reading memory at ALLOC[0x1..0x2], but memory is uninitialized at [0x1..0x2], and this operation requires initialized memory
  --> tests/fail/uninit/padding-struct.rs:LL:CC
   |
LL |         let _val = *c.add(1);
   |                    ^^^^^^^^^ 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: BACKTRACE:
   = note: inside `main` at tests/fail/uninit/padding-struct.rs:LL:CC

Uninitialized memory occurred at ALLOC[0x1..0x2], in this allocation:
ALLOC (stack variable, size: 4, align: 2) {
    00 __ 00 00                                     │ .░..
}

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

error: aborting due to 1 previous error