30```
31
32▶When that is compiled, the compiler will error with something like
33
34```text
· · ·
35▶error: backend_repr: Aggregate { sized: true }
36 --> src/lib.rs:4:1
37 |
· · ·
42 | |_^
43
44▶error: size: Size { raw: 16 }
45 --> src/lib.rs:4:1
46 |
· · ·
51 | |_^
52
53▶error: aborting due to 2 previous errors
54```
55