error[E0793]: reference to packed field is unaligned
  --> tests/ui/packed.rs:14:60
   |
14 |         let Misalign { byte: a, inner: Misalign { byte: b, inner } } = &mut mu;
   |                                                            ^^^^^
   |
   = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
   = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
   = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)

error[E0793]: reference to packed field is unaligned
  --> tests/ui/packed.rs:24:5
   |
24 |     assert_eq!(init.inner.inner, 3);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: packed structs are only aligned by one byte, and many modern architectures penalize unaligned field accesses
   = note: creating a misaligned reference is undefined behavior (even if that reference is never dereferenced)
   = help: copy the field contents to a local variable, or replace the reference with a raw pointer and use `read_unaligned`/`write_unaligned` (loads and stores via `*p` must be properly aligned even when using raw pointers)
   = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)