warning: enum `Error` is never used
 --> <project>/reports/os-implementation/K1375-shared-memory-lifetime-local-preflight-G9THnP/workspace/os-shared-memory/src/lifetime.rs:4:10
  |
4 | pub enum Error { Access, Invalid, Busy, Stale }
  |          ^^^^^
  |
  = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default

warning: struct `Snapshot` is never constructed
 --> <project>/reports/os-implementation/K1375-shared-memory-lifetime-local-preflight-G9THnP/workspace/os-shared-memory/src/lifetime.rs:7:12
  |
7 | pub struct Snapshot<P: Copy + Eq> {
  |            ^^^^^^^^

warning: struct `Lifetime` is never constructed
  --> <project>/reports/os-implementation/K1375-shared-memory-lifetime-local-preflight-G9THnP/workspace/os-shared-memory/src/lifetime.rs:19:12
   |
19 | pub struct Lifetime<P: Copy + Eq> {
   |            ^^^^^^^^

warning: multiple associated items are never used
   --> <project>/reports/os-implementation/K1375-shared-memory-lifetime-local-preflight-G9THnP/workspace/os-shared-memory/src/lifetime.rs:25:12
    |
 24 | impl<P: Copy + Eq> Lifetime<P> {
    | ------------------------------ associated items in this implementation
 25 |     pub fn new(owner: P, frames: [u64; 2]) -> Result<Self, Error> {
    |            ^^^
...
 37 |     pub fn snapshot(&self) -> Snapshot<P> { self.state }
    |            ^^^^^^^^
 38 |
 39 |     fn maybe_free(&mut self) {
    |        ^^^^^^^^^^
...
 49 |     pub fn grant(&mut self, caller: P, recipient: P) -> Result<(), Error> {
    |            ^^^^^
...
 59 |     pub fn map(&mut self, caller: P, page: usize) -> Result<u64, Error> {
    |            ^^^
...
 73 |     pub fn write(&mut self, caller: P, page: usize, byte: u8) -> Result<(), Error> {
    |            ^^^^^
...
 84 |     pub fn read(&self, caller: P, page: usize) -> Result<u8, Error> {
    |            ^^^^
...
 94 |     pub fn close_handle(&mut self, caller: P) -> Result<(), Error> {
    |            ^^^^^^^^^^^^
...
106 |     pub fn unmap(&mut self, caller: P, page: usize) -> Result<(), Error> {
    |            ^^^^^
...
119 |     pub fn free_backing(&mut self, caller: P) -> Result<(), Error> {
    |            ^^^^^^^^^^^^

warning: 4 warnings emitted