Compilare: warning: field `0` is never read --> main.rs:4:21 | 4 | struct HeapFragment(BinaryHeap<u32>); | ------------ ^^^^^^^^^^^^^^^ | | | field in this struct | = note: `HeapFragment` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis = note: `#[warn(dead_code)]` on by default help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field | 4 | struct HeapFragment(()); | ~~ warning: 1 warning emitted