error: Undefined Behavior: memory access failed: attempting to access 1 byte, but got ALLOC+0x9 which is at or beyond the end of the allocation of size 9 bytes
  --> tests/fail/intrinsics/simd-scatter.rs:LL:CC
   |
LL | /         Simd::from_array([-27, 82, -41, 124]).scatter_select_unchecked(
LL | |
LL | |             &mut vec,
LL | |             Mask::splat(true),
LL | |             idxs,
LL | |         );
   | |_________^ 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
help: ALLOC was allocated here:
  --> tests/fail/intrinsics/simd-scatter.rs:LL:CC
   |
LL |         let mut vec: Vec<i8> = vec![10, 11, 12, 13, 14, 15, 16, 17, 18];
   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: BACKTRACE (of the first span):
   = note: inside `main` at tests/fail/intrinsics/simd-scatter.rs:LL:CC
   = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)

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

error: aborting due to 1 previous error