Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: hecrj/setup-rust-action@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

struct `SingleThreadedTcp` is never constructed

associated items `new`, `set_address`, `get_address`, and `listen` are never used

function `double1` is never used

function `double2` is never used

function `double3` is never used

function `multiply` is never used

function `sum` is never used

function `max` is never used

struct `Person` is never constructed

associated items `new`, `set_first_name`, and `set_last_name` are never used

struct `SingleThreadedTcp` is never constructed

associated items `new`, `set_address`, `get_address`, and `listen` are never used

function `double1` is never used

function `double2` is never used

function `double3` is never used

function `multiply` is never used

function `sum` is never used

function `max` is never used

struct `Person` is never constructed