warning: field `FirstFirst` should have a snake-case name
   ╭▸ test/ui/non_snake_case_struct_field.aldrin:12:13
   │
12 │             FirstFirst @ 1 = u32;
   │             ━━━━━━━━━━
   │
   ╰ help: consider renaming field `FirstFirst` to `first_first`