1 warning: `repr` attribute must have a hint
7 = note: #[warn(bad_repr)] on by default
8 = help: valid hints include `#[repr(C)]`, `#[repr(packed)]`, `#[repr(rust)]` and `#[repr(transparent)]`
9 = note: for more information, visit <https://doc.rust-lang.org/reference/type-layout.html>
11 warning: `repr` attribute isn't configurable with a literal
15 | ^^^^^^^^^^^^^ needs a hint
17 = help: valid hints include `#[repr(C)]`, `#[repr(packed)]`, `#[repr(rust)]` and `#[repr(transparent)]`
18 = note: for more information, visit <https://doc.rust-lang.org/reference/type-layout.html>
20 warning: `repr` attribute isn't configurable with a literal
24 | ^^^^^^^^^^^^^ help: give `repr` a hint: `#[repr(C)]`