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[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaying2005%2Flearning-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> src/one_shot1.rs:1:86
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::UnsafeCell, mem::MaybeUninit, sync::{atomic::{AtomicBool, Ordering}, Arc}, thread::{Thread, self}, marker::PhantomData};
[INFO] [stdout]   |                                                                                      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `marker::PhantomPinned`
[INFO] [stdout]  --> src/TimerFuture.rs:4:55
[INFO] [stdout]   |
[INFO] [stdout] 4 |     future::Future, pin::Pin, time::Duration, thread, marker::PhantomPinned,
[INFO] [stdout]   |                                                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cell::UnsafeCell` and `rc::Rc`
[INFO] [stdout]  --> src/Excutor.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 |     task::Context, cell::UnsafeCell, pin::Pin, rc::Rc,
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/Excutor.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 | /             /// so we need to use the `Mutex` to prove thread-safety. A production
[INFO] [stdout] 49 | |             /// executor would not need this, and could use `UnsafeCell` instead.
[INFO] [stdout]    | |_________________________________________________________________________________^
[INFO] [stdout] 50 |               future: Mutex::new(Some(future)),
[INFO] [stdout]    |               -------------------------------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::UnsafeCell`
[INFO] [stdout]  --> src/Excutor2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::UnsafeCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/Excutor2.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error::Error` and `ops::Deref`
[INFO] [stdout]  --> src/minis_redis/connection.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{error::Error, io::Cursor, ops::Deref};
[INFO] [stdout]   |           ^^^^^^^^^^^^              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufMut`
[INFO] [stdout]  --> src/minis_redis/connection.rs:6:29
[INFO] [stdout]   |
[INFO] [stdout] 6 | use bytes::{self, BytesMut, BufMut, Buf};
[INFO] [stdout]   |                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> src/one_shot1.rs:1:86
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::UnsafeCell, mem::MaybeUninit, sync::{atomic::{AtomicBool, Ordering}, Arc}, thread::{Thread, self}, marker::PhantomData};
[INFO] [stdout]   |                                                                                      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `marker::PhantomPinned`
[INFO] [stdout]  --> src/TimerFuture.rs:4:55
[INFO] [stdout]   |
[INFO] [stdout] 4 |     future::Future, pin::Pin, time::Duration, thread, marker::PhantomPinned,
[INFO] [stdout]   |                                                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cell::UnsafeCell` and `rc::Rc`
[INFO] [stdout]  --> src/Excutor.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 |     task::Context, cell::UnsafeCell, pin::Pin, rc::Rc,
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/Excutor.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 | /             /// so we need to use the `Mutex` to prove thread-safety. A production
[INFO] [stdout] 49 | |             /// executor would not need this, and could use `UnsafeCell` instead.
[INFO] [stdout]    | |_________________________________________________________________________________^
[INFO] [stdout] 50 |               future: Mutex::new(Some(future)),
[INFO] [stdout]    |               -------------------------------- rustdoc does not generate documentation for expression fields
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::UnsafeCell`
[INFO] [stdout]  --> src/Excutor2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::UnsafeCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/Excutor2.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]    --> src/Excutor2.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 173 |     use std::cell::RefCell;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]    --> src/Excutor2.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |     use std::rc::Rc;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error::Error` and `ops::Deref`
[INFO] [stdout]  --> src/minis_redis/connection.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{error::Error, io::Cursor, ops::Deref};
[INFO] [stdout]   |           ^^^^^^^^^^^^              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufMut`
[INFO] [stdout]  --> src/minis_redis/connection.rs:6:29
[INFO] [stdout]   |
[INFO] [stdout] 6 | use bytes::{self, BytesMut, BufMut, Buf};
[INFO] [stdout]   |                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> src/lib.rs:62:27
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `test` is never used
[INFO] [stdout]    --> src/lib.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl  Published {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] 111 |     fn test<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_mut` is never used
[INFO] [stdout]   --> src/arc.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<T> Arc<T> {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn get_mut(arc: &mut Self) -> Option<&mut T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/Excutor2.rs:147:10
[INFO] [stdout]     |
[INFO] [stdout] 147 | async fn main() {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]  --> src/minis_redis/connection.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Connection {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `write_frame`, `read_frame`, `parse_frame`, `write_value`, and `write_decimal` are never used
[INFO] [stdout]    --> src/minis_redis/connection.rs:17:12
[INFO] [stdout]     |
[INFO] [stdout] 16  | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 17  |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24  |     pub async fn write_frame(&mut self, frame: &Frame) -> io::Result<()> {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51  |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71  |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86  |     async fn write_value(&mut self, frame: &Frame) -> io::Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     async fn write_decimal(&mut self, val: u64) -> io::Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `TimerFuture` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub mod TimerFuture;
[INFO] [stdout]    |         ^^^^^^^^^^^ help: convert the identifier to snake case: `timer_future`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Excutor` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub mod Excutor;
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case: `excutor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Excutor2` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub mod Excutor2;
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `excutor2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `post`
[INFO] [stdout]   --> src/lib.rs:62:27
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `test` is never used
[INFO] [stdout]    --> src/lib.rs:111:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | impl  Published {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] 111 |     fn test<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_mut` is never used
[INFO] [stdout]   --> src/arc.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<T> Arc<T> {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn get_mut(arc: &mut Self) -> Option<&mut T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/Excutor2.rs:147:10
[INFO] [stdout]     |
[INFO] [stdout] 147 | async fn main() {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]  --> src/minis_redis/connection.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Connection {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `write_frame`, `read_frame`, `parse_frame`, `write_value`, and `write_decimal` are never used
[INFO] [stdout]    --> src/minis_redis/connection.rs:17:12
[INFO] [stdout]     |
[INFO] [stdout] 16  | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 17  |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24  |     pub async fn write_frame(&mut self, frame: &Frame) -> io::Result<()> {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51  |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71  |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86  |     async fn write_value(&mut self, frame: &Frame) -> io::Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     async fn write_decimal(&mut self, val: u64) -> io::Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `TimerFuture` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub mod TimerFuture;
[INFO] [stdout]    |         ^^^^^^^^^^^ help: convert the identifier to snake case: `timer_future`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Excutor` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub mod Excutor;
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case: `excutor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Excutor2` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub mod Excutor2;
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `excutor2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/bin/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::sleep`
[INFO] [stdout]  --> src/bin/client.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::{sync::{ mpsc, oneshot }, time::sleep};
[INFO] [stdout]   |                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Connection` and `Frame`
[INFO] [stdout]  --> src/bin/client.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mini_redis::{ Connection, Frame, client };
[INFO] [stdout]   |                   ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]  --> src/bin/main3.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn t_ref<'a, T: 'a>(t: &'a T) {}
[INFO] [stdout]   |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/main3.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn t_bound<'a, T: 'a>(t: T) {}
[INFO] [stdout]    |                       ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `t_ref` is never used
[INFO] [stdout]  --> src/bin/main3.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn t_ref<'a, T: 'a>(t: &'a T) {}
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Handle`
[INFO] [stdout]  --> src/bin/main4.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::runtime::{Builder, Handle};
[INFO] [stdout]   |                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `t_bound` is never used
[INFO] [stdout]   --> src/bin/main3.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn t_bound<'a, T: 'a>(t: T) {}
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]  --> src/bin/main4.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tracing::{debug, info, instrument};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ref` is never constructed
[INFO] [stdout]   --> src/bin/main3.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Ref<'a, T: 'a>(&'a T);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]  --> src/bin/main3.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn t_ref<'a, T: 'a>(t: &'a T) {}
[INFO] [stdout]   |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/bin/main3.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn t_bound<'a, T: 'a>(t: T) {}
[INFO] [stdout]    |                       ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `t_ref` is never used
[INFO] [stdout]  --> src/bin/main3.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn t_ref<'a, T: 'a>(t: &'a T) {}
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `t_bound` is never used
[INFO] [stdout]   --> src/bin/main3.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn t_bound<'a, T: 'a>(t: T) {}
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ref` is never constructed
[INFO] [stdout]   --> src/bin/main3.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Ref<'a, T: 'a>(&'a T);
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Handle`
[INFO] [stdout]  --> src/bin/main4.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::runtime::{Builder, Handle};
[INFO] [stdout]   |                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]  --> src/bin/main4.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tracing::{debug, info, instrument};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell`, `RefCell`, and `UnsafeCell`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{RefCell, UnsafeCell, Cell};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Display`
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Display, Debug};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration` and `Instant`
[INFO] [stdout]  --> src/main.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync::atomic::Ordering::{Relaxed, Acquire, Release, self};
[INFO] [stdout]   |                                                              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hello_world::one_shot1::OneShot`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use hello_world::one_shot1::OneShot;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hello_world::spin_lock::SpinLock`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use hello_world::spin_lock::SpinLock;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let x = [1,2,3];
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | const fn test(x: u32) -> &'static str {
[INFO] [stdout]    |               ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]  --> src/bin/main2.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::Mutex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/bin/main2.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/main.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | const fn test(x: u32) -> &'static str {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `ii` is never used
[INFO] [stdout]   --> src/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | static ii: &str = test(12);
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `a` is never used
[INFO] [stdout]   --> src/main.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | const a:u32 = 12;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `b` is never used
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const b:i32 = [1,2,3][0];
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `m` is never used
[INFO] [stdout]   --> src/main.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const m: Mutex<u32> = Mutex::new(0);
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_data` is never used
[INFO] [stdout]   --> src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn get_data() -> &'static Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/main.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct A {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `ii` should have an upper case name
[INFO] [stdout]   --> src/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | static ii: &str = test(12);
[INFO] [stdout]    |        ^^ help: convert the identifier to upper case (notice the capitalization): `II`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `a` should have an upper case name
[INFO] [stdout]   --> src/main.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | const a:u32 = 12;
[INFO] [stdout]    |       ^ help: convert the identifier to upper case: `A`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `b` should have an upper case name
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const b:i32 = [1,2,3][0];
[INFO] [stdout]    |       ^ help: convert the identifier to upper case: `B`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `m` should have an upper case name
[INFO] [stdout]   --> src/main.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const m: Mutex<u32> = Mutex::new(0);
[INFO] [stdout]    |       ^ help: convert the identifier to upper case: `M`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/bin/main2.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn test() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test1` is never used
[INFO] [stdout]   --> src/bin/main2.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn test1(s: &mut String) -> &mut str {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `process`
[INFO] [stdout]  --> src/bin/excutor2.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time::{Instant, Duration}, process};
[INFO] [stdout]   |                                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement with no effect
[INFO] [stdout]   --> src/bin/main2.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     xx;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/excutor2.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut mini_tokio = MiniTokio::new();
[INFO] [stdout]   |         ----^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cursor`, `Error`, `Read`, `Write`, `self`, and `thread`
[INFO] [stdout]  --> src/bin/test.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::{Cursor, Write, Read, Error, self}, net::TcpStream, cell::RefCell, thread};
[INFO] [stdout]   |                ^^^^^^  ^^^^^  ^^^^  ^^^^^  ^^^^                                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufMut`, `Buf`, and `BytesMut`
[INFO] [stdout]  --> src/bin/test.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use bytes::{Bytes, Buf, BytesMut, BufMut};
[INFO] [stdout]   |                    ^^^  ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncRead` and `BufWriter`
[INFO] [stdout]  --> src/bin/test.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::io::{BufWriter, AsyncRead};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xxxx`
[INFO] [stdout]   --> src/bin/test.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let xxxx = x.borrow_mut();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_xxxx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xx2`
[INFO] [stdout]   --> src/bin/test.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let xx2 = x.borrow();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_xx2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xx3`
[INFO] [stdout]   --> src/bin/test.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let xx3 = x.borrow_mut();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_xx3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/test.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut buf = Bytes::from(&b"aaaaaa"[..]);
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/bin/test.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let s = "x".to_owned();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/bin/test.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/test.rs:23:21
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_uppercase` is never used
[INFO] [stdout]   --> src/bin/test.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug` and `info`
[INFO] [stdout]  --> src/bin/main5.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tracing::{debug, info, span, Level,event};
[INFO] [stdout]   |               ^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Context`, `Mutex`, `Poll`, `Waker`, `future::Future`, `pin::Pin`, and `thread`
[INFO] [stdout]  --> src/bin/excutor.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     sync::{Mutex, Arc}, 
[INFO] [stdout]   |            ^^^^^  ^^^
[INFO] [stdout] 3 |     task::{Waker, Poll, Context}, 
[INFO] [stdout]   |            ^^^^^  ^^^^  ^^^^^^^
[INFO] [stdout] 4 |     future::Future, pin::Pin, time::Duration, thread,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^  ^^^^^^^^                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::join`
[INFO] [stdout]  --> src/bin/excutor.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Context`, `Mutex`, `Poll`, `Waker`, `future::Future`, `pin::Pin`, and `thread`
[INFO] [stdout]  --> src/bin/excutor.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     sync::{Mutex, Arc}, 
[INFO] [stdout]   |            ^^^^^  ^^^
[INFO] [stdout] 3 |     task::{Waker, Poll, Context}, 
[INFO] [stdout]   |            ^^^^^  ^^^^  ^^^^^^^
[INFO] [stdout] 4 |     future::Future, pin::Pin, time::Duration, thread,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^  ^^^^^^^^                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::join`
[INFO] [stdout]  --> src/bin/excutor.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/bin/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::sleep`
[INFO] [stdout]  --> src/bin/client.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::{sync::{ mpsc, oneshot }, time::sleep};
[INFO] [stdout]   |                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Connection` and `Frame`
[INFO] [stdout]  --> src/bin/client.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mini_redis::{ Connection, Frame, client };
[INFO] [stdout]   |                   ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncBufReadExt` and `self`
[INFO] [stdout]  --> src/bin/echo-server.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::io::{ AsyncBufReadExt, AsyncWriteExt, self, AsyncReadExt };
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]  --> src/bin/echo-server.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::net::{ TcpStream, TcpListener };
[INFO] [stdout]   |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncBufReadExt` and `self`
[INFO] [stdout]  --> src/bin/echo-server.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::io::{ AsyncBufReadExt, AsyncWriteExt, self, AsyncReadExt };
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]  --> src/bin/echo-server.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::net::{ TcpStream, TcpListener };
[INFO] [stdout]   |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]  --> src/bin/main2.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::Mutex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/bin/main2.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug` and `info`
[INFO] [stdout]  --> src/bin/main5.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tracing::{debug, info, span, Level,event};
[INFO] [stdout]   |               ^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/bin/main2.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn test() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test1` is never used
[INFO] [stdout]   --> src/bin/main2.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn test1(s: &mut String) -> &mut str {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement with no effect
[INFO] [stdout]   --> src/bin/main2.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     xx;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell`, `RefCell`, and `UnsafeCell`
[INFO] [stdout]  --> src/main.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::{RefCell, UnsafeCell, Cell};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Display`
[INFO] [stdout]  --> src/main.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Display, Debug};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration` and `Instant`
[INFO] [stdout]  --> src/main.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:9:62
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync::atomic::Ordering::{Relaxed, Acquire, Release, self};
[INFO] [stdout]   |                                                              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hello_world::one_shot1::OneShot`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use hello_world::one_shot1::OneShot;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hello_world::spin_lock::SpinLock`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use hello_world::spin_lock::SpinLock;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let x = [1,2,3];
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | const fn test(x: u32) -> &'static str {
[INFO] [stdout]    |               ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/main.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | const fn test(x: u32) -> &'static str {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `ii` is never used
[INFO] [stdout]   --> src/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | static ii: &str = test(12);
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `a` is never used
[INFO] [stdout]   --> src/main.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | const a:u32 = 12;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `b` is never used
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const b:i32 = [1,2,3][0];
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `m` is never used
[INFO] [stdout]   --> src/main.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const m: Mutex<u32> = Mutex::new(0);
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_data` is never used
[INFO] [stdout]   --> src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn get_data() -> &'static Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/main.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct A {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `ii` should have an upper case name
[INFO] [stdout]   --> src/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | static ii: &str = test(12);
[INFO] [stdout]    |        ^^ help: convert the identifier to upper case (notice the capitalization): `II`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `a` should have an upper case name
[INFO] [stdout]   --> src/main.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | const a:u32 = 12;
[INFO] [stdout]    |       ^ help: convert the identifier to upper case: `A`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `b` should have an upper case name
[INFO] [stdout]   --> src/main.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const b:i32 = [1,2,3][0];
[INFO] [stdout]    |       ^ help: convert the identifier to upper case: `B`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `m` should have an upper case name
[INFO] [stdout]   --> src/main.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const m: Mutex<u32> = Mutex::new(0);
[INFO] [stdout]    |       ^ help: convert the identifier to upper case: `M`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `process`
[INFO] [stdout]  --> src/bin/excutor2.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time::{Instant, Duration}, process};
[INFO] [stdout]   |                                      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cursor`, `Error`, `Read`, `Write`, `self`, and `thread`
[INFO] [stdout]  --> src/bin/test.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::{Cursor, Write, Read, Error, self}, net::TcpStream, cell::RefCell, thread};
[INFO] [stdout]   |                ^^^^^^  ^^^^^  ^^^^  ^^^^^  ^^^^                                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufMut`, `Buf`, and `BytesMut`
[INFO] [stdout]  --> src/bin/test.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use bytes::{Bytes, Buf, BytesMut, BufMut};
[INFO] [stdout]   |                    ^^^  ^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncRead` and `BufWriter`
[INFO] [stdout]  --> src/bin/test.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::io::{BufWriter, AsyncRead};
[INFO] [stdout]   |                 ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xxxx`
[INFO] [stdout]   --> src/bin/test.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let xxxx = x.borrow_mut();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_xxxx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xx2`
[INFO] [stdout]   --> src/bin/test.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let xx2 = x.borrow();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_xx2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `xx3`
[INFO] [stdout]   --> src/bin/test.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let xx3 = x.borrow_mut();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_xx3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/test.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut buf = Bytes::from(&b"aaaaaa"[..]);
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/bin/test.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let s = "x".to_owned();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/bin/test.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/excutor2.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut mini_tokio = MiniTokio::new();
[INFO] [stdout]   |         ----^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/test.rs:23:21
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_uppercase` is never used
[INFO] [stdout]   --> src/bin/test.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment_and_do_stuff` is never used
[INFO] [stdout]   --> src/bin/server.rs:80:10
[INFO] [stdout]    |
[INFO] [stdout] 80 | async fn increment_and_do_stuff(mutex: &Mutex<i32>) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_something_async` is never used
[INFO] [stdout]   --> src/bin/server.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | async fn do_something_async() {}
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `increment_and_do_stuff` is never used
[INFO] [stdout]   --> src/bin/server.rs:80:10
[INFO] [stdout]    |
[INFO] [stdout] 80 | async fn increment_and_do_stuff(mutex: &Mutex<i32>) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `do_something_async` is never used
[INFO] [stdout]   --> src/bin/server.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | async fn do_something_async() {}
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.67s
[INFO] running `Command { std: "docker" "inspect" "d471f5a72b3c758cf1a2976c6748dc09673ab20be5c66af69cede89e6a7ee6fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d471f5a72b3c758cf1a2976c6748dc09673ab20be5c66af69cede89e6a7ee6fa", kill_on_drop: false }`
[INFO] [stdout] d471f5a72b3c758cf1a2976c6748dc09673ab20be5c66af69cede89e6a7ee6fa
