[INFO] cloning repository https://github.com/haying2005/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/haying2005/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaying2005%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaying2005%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 088d149109265834c9de44062e8a48b99086f626
[INFO] testing haying2005/learning-rust against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaying2005%2Flearning-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/haying2005/learning-rust
[INFO] finished tweaking git repo https://github.com/haying2005/learning-rust
[INFO] tweaked toml for git repo https://github.com/haying2005/learning-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/haying2005/learning-rust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/haying2005/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 8a1ac847ed74e87538f4a8e556355624cba85319baf3b216b7436b50c537ace7
[INFO] running `Command { std: "docker" "start" "-a" "8a1ac847ed74e87538f4a8e556355624cba85319baf3b216b7436b50c537ace7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a1ac847ed74e87538f4a8e556355624cba85319baf3b216b7436b50c537ace7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a1ac847ed74e87538f4a8e556355624cba85319baf3b216b7436b50c537ace7", kill_on_drop: false }`
[INFO] [stdout] 8a1ac847ed74e87538f4a8e556355624cba85319baf3b216b7436b50c537ace7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68f1c42f03b01f9a352392f6068bcf163725a3edd5b35529a99f63798998dbd1
[INFO] running `Command { std: "docker" "start" "-a" "68f1c42f03b01f9a352392f6068bcf163725a3edd5b35529a99f63798998dbd1", 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 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::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 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: 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: `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: `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 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: `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 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: `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 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: 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 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: 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: `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: `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 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 `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 `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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 03s
[INFO] running `Command { std: "docker" "inspect" "68f1c42f03b01f9a352392f6068bcf163725a3edd5b35529a99f63798998dbd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f1c42f03b01f9a352392f6068bcf163725a3edd5b35529a99f63798998dbd1", kill_on_drop: false }`
[INFO] [stdout] 68f1c42f03b01f9a352392f6068bcf163725a3edd5b35529a99f63798998dbd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12a8627899e6dd3bef9ba97519433cc9f3d779c948fea7a76750d050d0045776
[INFO] running `Command { std: "docker" "start" "-a" "12a8627899e6dd3bef9ba97519433cc9f3d779c948fea7a76750d050d0045776", kill_on_drop: false }`
[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 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] [stderr]    Compiling hello-world v0.1.0 (/opt/rustwide/workdir)
[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: `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: `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: `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: `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: 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: 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: 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: 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: 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: 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 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: `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 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: `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 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.05s
[INFO] running `Command { std: "docker" "inspect" "12a8627899e6dd3bef9ba97519433cc9f3d779c948fea7a76750d050d0045776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12a8627899e6dd3bef9ba97519433cc9f3d779c948fea7a76750d050d0045776", kill_on_drop: false }`
[INFO] [stdout] 12a8627899e6dd3bef9ba97519433cc9f3d779c948fea7a76750d050d0045776
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 46fe1379160634a60da5d1ff7f17f131c111f5fca63d61049036827e1abc6233
[INFO] running `Command { std: "docker" "start" "-a" "46fe1379160634a60da5d1ff7f17f131c111f5fca63d61049036827e1abc6233", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Arc`
[INFO] [stderr]  --> src/one_shot1.rs:1:86
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{cell::UnsafeCell, mem::MaybeUninit, sync::{atomic::{AtomicBool, Ordering}, Arc}, thread::{Thread, self}, marker::PhantomData};
[INFO] [stderr]   |                                                                                      ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `marker::PhantomPinned`
[INFO] [stderr]  --> src/TimerFuture.rs:4:55
[INFO] [stderr]   |
[INFO] [stderr] 4 |     future::Future, pin::Pin, time::Duration, thread, marker::PhantomPinned,
[INFO] [stderr]   |                                                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `cell::UnsafeCell` and `rc::Rc`
[INFO] [stderr]  --> src/Excutor.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 |     task::Context, cell::UnsafeCell, pin::Pin, rc::Rc,
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/Excutor.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 | /             /// so we need to use the `Mutex` to prove thread-safety. A production
[INFO] [stderr] 49 | |             /// executor would not need this, and could use `UnsafeCell` instead.
[INFO] [stderr]    | |_________________________________________________________________________________^
[INFO] [stderr] 50 |               future: Mutex::new(Some(future)),
[INFO] [stderr]    |               -------------------------------- rustdoc does not generate documentation for expression fields
[INFO] [stderr]    |
[INFO] [stderr]    = help: use `//` for a plain comment
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::UnsafeCell`
[INFO] [stderr]  --> src/Excutor2.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cell::UnsafeCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/Excutor2.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `error::Error` and `ops::Deref`
[INFO] [stderr]  --> src/minis_redis/connection.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{error::Error, io::Cursor, ops::Deref};
[INFO] [stderr]   |           ^^^^^^^^^^^^              ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufMut`
[INFO] [stderr]  --> src/minis_redis/connection.rs:6:29
[INFO] [stderr]   |
[INFO] [stderr] 6 | use bytes::{self, BytesMut, BufMut, Buf};
[INFO] [stderr]   |                             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `post`
[INFO] [stderr]   --> src/lib.rs:62:27
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_post`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `test` is never used
[INFO] [stderr]    --> src/lib.rs:111:8
[INFO] [stderr]     |
[INFO] [stderr] 110 | impl  Published {
[INFO] [stderr]     | --------------- method in this implementation
[INFO] [stderr] 111 |     fn test<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `get_mut` is never used
[INFO] [stderr]   --> src/arc.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl<T> Arc<T> {
[INFO] [stderr]    | -------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 38 |     fn get_mut(arc: &mut Self) -> Option<&mut T> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]    --> src/Excutor2.rs:147:10
[INFO] [stderr]     |
[INFO] [stderr] 147 | async fn main() {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Connection` is never constructed
[INFO] [stderr]  --> src/minis_redis/connection.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct Connection {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `write_frame`, `read_frame`, `parse_frame`, `write_value`, and `write_decimal` are never used
[INFO] [stderr]    --> src/minis_redis/connection.rs:17:12
[INFO] [stderr]     |
[INFO] [stderr] 16  | impl Connection {
[INFO] [stderr]     | --------------- associated items in this implementation
[INFO] [stderr] 17  |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 24  |     pub async fn write_frame(&mut self, frame: &Frame) -> io::Result<()> {
[INFO] [stderr]     |                  ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51  |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stderr]     |                  ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 71  |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 86  |     async fn write_value(&mut self, frame: &Frame) -> io::Result<()> {
[INFO] [stderr]     |              ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |     async fn write_decimal(&mut self, val: u64) -> io::Result<()> {
[INFO] [stderr]     |              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: module `TimerFuture` should have a snake case name
[INFO] [stderr]   --> src/lib.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub mod TimerFuture;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: convert the identifier to snake case: `timer_future`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `Excutor` should have a snake case name
[INFO] [stderr]   --> src/lib.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub mod Excutor;
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to snake case: `excutor`
[INFO] [stderr] 
[INFO] [stderr] warning: module `Excutor2` should have a snake case name
[INFO] [stderr]   --> src/lib.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub mod Excutor2;
[INFO] [stderr]    |         ^^^^^^^^ help: convert the identifier to snake case: `excutor2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]    --> src/Excutor2.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 |     use std::cell::RefCell;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]    --> src/Excutor2.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |     use std::rc::Rc;
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello-world` (lib) generated 17 warnings (run `cargo fix --lib -p hello-world` to apply 7 suggestions)
[INFO] [stderr] warning: `hello-world` (lib test) generated 19 warnings (17 duplicates) (run `cargo fix --lib -p hello-world --tests` to apply 2 suggestions)
[INFO] [stderr] warning: unused imports: `Cell`, `RefCell`, and `UnsafeCell`
[INFO] [stderr]  --> src/main.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cell::{RefCell, UnsafeCell, Cell};
[INFO] [stderr]   |                 ^^^^^^^  ^^^^^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Debug` and `Display`
[INFO] [stderr]  --> src/main.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::{Display, Debug};
[INFO] [stderr]   |                ^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Deref;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Duration` and `Instant`
[INFO] [stderr]  --> src/main.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/main.rs:9:62
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::sync::atomic::Ordering::{Relaxed, Acquire, Release, self};
[INFO] [stderr]   |                                                              ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hello_world::one_shot1::OneShot`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use hello_world::one_shot1::OneShot;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hello_world::spin_lock::SpinLock`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use hello_world::spin_lock::SpinLock;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let x = [1,2,3];
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:16:15
[INFO] [stderr]    |
[INFO] [stderr] 16 | const fn test(x: u32) -> &'static str {
[INFO] [stderr]    |               ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: function `test` is never used
[INFO] [stderr]   --> src/main.rs:16:10
[INFO] [stderr]    |
[INFO] [stderr] 16 | const fn test(x: u32) -> &'static str {
[INFO] [stderr]    |          ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static `ii` is never used
[INFO] [stderr]   --> src/main.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | static ii: &str = test(12);
[INFO] [stderr]    |        ^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `a` is never used
[INFO] [stderr]   --> src/main.rs:22:7
[INFO] [stderr]    |
[INFO] [stderr] 22 | const a:u32 = 12;
[INFO] [stderr]    |       ^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `b` is never used
[INFO] [stderr]   --> src/main.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 | const b:i32 = [1,2,3][0];
[INFO] [stderr]    |       ^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `m` is never used
[INFO] [stderr]   --> src/main.rs:25:7
[INFO] [stderr]    |
[INFO] [stderr] 25 | const m: Mutex<u32> = Mutex::new(0);
[INFO] [stderr]    |       ^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_data` is never used
[INFO] [stderr]   --> src/main.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn get_data() -> &'static Vec<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `A` is never constructed
[INFO] [stderr]   --> src/main.rs:51:8
[INFO] [stderr]    |
[INFO] [stderr] 51 | struct A {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `ii` should have an upper case name
[INFO] [stderr]   --> src/main.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | static ii: &str = test(12);
[INFO] [stderr]    |        ^^ help: convert the identifier to upper case (notice the capitalization): `II`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `a` should have an upper case name
[INFO] [stderr]   --> src/main.rs:22:7
[INFO] [stderr]    |
[INFO] [stderr] 22 | const a:u32 = 12;
[INFO] [stderr]    |       ^ help: convert the identifier to upper case: `A`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `b` should have an upper case name
[INFO] [stderr]   --> src/main.rs:23:7
[INFO] [stderr]    |
[INFO] [stderr] 23 | const b:i32 = [1,2,3][0];
[INFO] [stderr]    |       ^ help: convert the identifier to upper case: `B`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `m` should have an upper case name
[INFO] [stderr]   --> src/main.rs:25:7
[INFO] [stderr]    |
[INFO] [stderr] 25 | const m: Mutex<u32> = Mutex::new(0);
[INFO] [stderr]    |       ^ help: convert the identifier to upper case: `M`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Context`, `Mutex`, `Poll`, `Waker`, `future::Future`, `pin::Pin`, and `thread`
[INFO] [stderr]  --> src/bin/excutor.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 |     sync::{Mutex, Arc}, 
[INFO] [stderr]   |            ^^^^^  ^^^
[INFO] [stderr] 3 |     task::{Waker, Poll, Context}, 
[INFO] [stderr]   |            ^^^^^  ^^^^  ^^^^^^^
[INFO] [stderr] 4 |     future::Future, pin::Pin, time::Duration, thread,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^  ^^^^^^^^                  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::join`
[INFO] [stderr]  --> src/bin/excutor.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use futures::join;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> src/bin/client.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `time::sleep`
[INFO] [stderr]  --> src/bin/client.rs:4:38
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tokio::{sync::{ mpsc, oneshot }, time::sleep};
[INFO] [stderr]   |                                      ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Connection` and `Frame`
[INFO] [stderr]  --> src/bin/client.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 | use mini_redis::{ Connection, Frame, client };
[INFO] [stderr]   |                   ^^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `debug` and `info`
[INFO] [stderr]  --> src/bin/main5.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use tracing::{debug, info, span, Level,event};
[INFO] [stderr]   |               ^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]  --> src/bin/main3.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn t_ref<'a, T: 'a>(t: &'a T) {}
[INFO] [stderr]   |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/bin/main3.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn t_bound<'a, T: 'a>(t: T) {}
[INFO] [stderr]    |                       ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: function `t_ref` is never used
[INFO] [stderr]  --> src/bin/main3.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn t_ref<'a, T: 'a>(t: &'a T) {}
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `t_bound` is never used
[INFO] [stderr]   --> src/bin/main3.rs:10:4
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn t_bound<'a, T: 'a>(t: T) {}
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ref` is never constructed
[INFO] [stderr]   --> src/bin/main3.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct Ref<'a, T: 'a>(&'a T);
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Handle`
[INFO] [stderr]  --> src/bin/main4.rs:1:31
[INFO] [stderr]   |
[INFO] [stderr] 1 | use tokio::runtime::{Builder, Handle};
[INFO] [stderr]   |                               ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `debug`
[INFO] [stderr]  --> src/bin/main4.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use tracing::{debug, info, instrument};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AsyncBufReadExt` and `self`
[INFO] [stderr]  --> src/bin/echo-server.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | use tokio::io::{ AsyncBufReadExt, AsyncWriteExt, self, AsyncReadExt };
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^                 ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TcpStream`
[INFO] [stderr]  --> src/bin/echo-server.rs:2:19
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tokio::net::{ TcpStream, TcpListener };
[INFO] [stderr]   |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `process`
[INFO] [stderr]  --> src/bin/excutor2.rs:1:38
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{time::{Instant, Duration}, process};
[INFO] [stderr]   |                                      ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/excutor2.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut mini_tokio = MiniTokio::new();
[INFO] [stderr]   |         ----^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Cursor`, `Error`, `Read`, `Write`, `self`, and `thread`
[INFO] [stderr]  --> src/bin/test.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{io::{Cursor, Write, Read, Error, self}, net::TcpStream, cell::RefCell, thread};
[INFO] [stderr]   |                ^^^^^^  ^^^^^  ^^^^  ^^^^^  ^^^^                                  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufMut`, `Buf`, and `BytesMut`
[INFO] [stderr]  --> src/bin/test.rs:3:20
[INFO] [stderr]   |
[INFO] [stderr] 3 | use bytes::{Bytes, Buf, BytesMut, BufMut};
[INFO] [stderr]   |                    ^^^  ^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AsyncRead` and `BufWriter`
[INFO] [stderr]  --> src/bin/test.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tokio::io::{BufWriter, AsyncRead};
[INFO] [stderr]   |                 ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `xxxx`
[INFO] [stderr]   --> src/bin/test.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let xxxx = x.borrow_mut();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_xxxx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `xx2`
[INFO] [stderr]   --> src/bin/test.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let xx2 = x.borrow();
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_xx2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `xx3`
[INFO] [stderr]   --> src/bin/test.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let xx3 = x.borrow_mut();
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_xx3`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/test.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut buf = Bytes::from(&b"aaaaaa"[..]);
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/bin/test.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let s = "x".to_owned();
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/bin/test.rs:23:25
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/test.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stderr]    |                     ----^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function `string_uppercase` is never used
[INFO] [stderr]   --> src/bin/test.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn string_uppercase(mut data: &TcpStream) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `increment_and_do_stuff` is never used
[INFO] [stderr]   --> src/bin/server.rs:80:10
[INFO] [stderr]    |
[INFO] [stderr] 80 | async fn increment_and_do_stuff(mutex: &Mutex<i32>) {
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `do_something_async` is never used
[INFO] [stderr]   --> src/bin/server.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 | async fn do_something_async() {}
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Mutex`
[INFO] [stderr]  --> src/bin/main2.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::Mutex;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/bin/main2.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test` is never used
[INFO] [stderr]   --> src/bin/main2.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn test() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `test1` is never used
[INFO] [stderr]   --> src/bin/main2.rs:89:4
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn test1(s: &mut String) -> &mut str {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: path statement with no effect
[INFO] [stderr]   --> src/bin/main2.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     xx;
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(path_statements)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `hello-world` (bin "hello-world" test) generated 21 warnings (run `cargo fix --bin "hello-world" --tests` to apply 12 suggestions)
[INFO] [stderr] warning: `hello-world` (bin "excutor" test) generated 2 warnings (run `cargo fix --bin "excutor" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `hello-world` (bin "client" test) generated 3 warnings (run `cargo fix --bin "client" --tests` to apply 3 suggestions)
[INFO] [stderr] warning: `hello-world` (bin "main5" test) generated 1 warning (run `cargo fix --bin "main5" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `hello-world` (bin "main3" test) generated 5 warnings
[INFO] [stderr] warning: `hello-world` (bin "main4" test) generated 2 warnings (run `cargo fix --bin "main4" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `hello-world` (bin "echo-server" test) generated 2 warnings (run `cargo fix --bin "echo-server" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `hello-world` (bin "excutor2" test) generated 2 warnings (run `cargo fix --bin "excutor2" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `hello-world` (bin "test" test) generated 11 warnings (run `cargo fix --bin "test" --tests` to apply 5 suggestions)
[INFO] [stderr] warning: `hello-world` (bin "server" test) generated 2 warnings
[INFO] [stderr] warning: `hello-world` (bin "main2" test) generated 5 warnings (run `cargo fix --bin "main2" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hello_world-9f0d025062c5fba7)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test arc1::test::test ... ok
[INFO] [stdout] test arc2::test::test ... ok
[INFO] [stdout] test arc::test::test ... ok
[INFO] [stderr]      Running unittests src/bin/client.rs (/opt/rustwide/target/debug/deps/client-ae52aed3ab9abda6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/echo-server.rs (/opt/rustwide/target/debug/deps/echo_server-b27a129fe82dcb9c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/excutor.rs (/opt/rustwide/target/debug/deps/excutor-9ca4f5cd4323dc59)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/excutor2.rs (/opt/rustwide/target/debug/deps/excutor2-cf83ac6c47b85ee5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hello_world-2919736b77c9ff42)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/io.rs (/opt/rustwide/target/debug/deps/io-45ee723daac90d1b)
[INFO] [stderr]      Running unittests src/bin/main1.rs (/opt/rustwide/target/debug/deps/main1-3b6f3f1f5dbc9539)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/main2.rs (/opt/rustwide/target/debug/deps/main2-4b18c4576fb65de0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/main3.rs (/opt/rustwide/target/debug/deps/main3-9b27cf892217cc8b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/main4.rs (/opt/rustwide/target/debug/deps/main4-019bf5b19d4e6744)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/main5.rs (/opt/rustwide/target/debug/deps/main5-f936f1495fdc2ac3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/pin.rs (/opt/rustwide/target/debug/deps/pin-90bcebbeb25adae7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/server.rs (/opt/rustwide/target/debug/deps/server-5dbc083e42243b84)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/test.rs (/opt/rustwide/target/debug/deps/test-c3b426481624caa6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hello_world
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "46fe1379160634a60da5d1ff7f17f131c111f5fca63d61049036827e1abc6233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46fe1379160634a60da5d1ff7f17f131c111f5fca63d61049036827e1abc6233", kill_on_drop: false }`
[INFO] [stdout] 46fe1379160634a60da5d1ff7f17f131c111f5fca63d61049036827e1abc6233
