[INFO] cloning repository https://github.com/yinho999/my-redis-tokio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yinho999/my-redis-tokio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyinho999%2Fmy-redis-tokio", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25a41f1f13ae8a645c23e9ea2a5cc46d9e6b2d06
[INFO] building yinho999/my-redis-tokio against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyinho999%2Fmy-redis-tokio" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yinho999/my-redis-tokio
[INFO] finished tweaking git repo https://github.com/yinho999/my-redis-tokio
[INFO] tweaked toml for git repo https://github.com/yinho999/my-redis-tokio written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yinho999/my-redis-tokio on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
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[INFO] crate git repo https://github.com/yinho999/my-redis-tokio 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `BytesMut`
[INFO] [stdout]  --> src/connection_vec_u8.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use bytes::{BufMut, BytesMut};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]  --> src/connection_bytes.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Connection {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_frame`, `parse_frame`, `write_frame`, and `write_decimal` are never used
[INFO] [stdout]    --> src/connection_bytes.rs:16:12
[INFO] [stdout]     |
[INFO] [stdout]  15 | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout]  16 |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  22 |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  40 |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  72 |     async fn write_frame(&mut self, frame: &Frame) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     async fn write_decimal(&mut self, val: u64) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]  --> src/connection_vec_u8.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Connection {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_frame`, and `parse_frame` are never used
[INFO] [stdout]   --> src/connection_vec_u8.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Connection {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/select-pattern-matching.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let (mut tx1, mut rx1): (tokio::sync::mpsc::Sender<Option<String>>, tokio::sync::mpsc::Receiver<Option<String>>) = mpsc::channel(128);
[INFO] [stdout]   |          ----^^^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/select-pattern-matching.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let (mut tx2, mut rx2): (tokio::sync::mpsc::Sender<Option<String>>, tokio::sync::mpsc::Receiver<Option<String>>) = mpsc::channel(128);
[INFO] [stdout]   |          ----^^^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/bin/select-syntax-client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Delay` is never constructed
[INFO] [stdout]   --> src/bin/mini-tokio.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Delay {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/server.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | /     loop {
[INFO] [stdout] 39 | |         // The first item contains the socket and address of the new connection.
[INFO] [stdout] 40 | |         // The second item contains the IP and port of the new connection.
[INFO] [stdout] 41 | |         let (socket, _) = listener.accept().await?;
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         });
[INFO] [stdout] 54 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 55 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ShardedDb` is never used
[INFO] [stdout]  --> src/bin/server.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type ShardedDb = Arc<Vec<Mutex<HashMap<String, Bytes>>>>;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_sharded_db` is never used
[INFO] [stdout]   --> src/bin/server.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn new_sharded_db(n: usize) -> ShardedDb {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncReadExt` and `AsyncWriteExt`
[INFO] [stdout]  --> src/bin/echo-server-split.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::io::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                 ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connection`
[INFO] [stdout]   --> src/bin/select-syntax-server.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut connection = mini_redis::Connection::new(socket);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connection`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/select-syntax-server.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut connection = mini_redis::Connection::new(socket);
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/select-syntax-server.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 23 | /             loop {
[INFO] [stdout] 24 | |                 let (socket, _) = listener.accept().await?;
[INFO] [stdout] 25 | |                 tokio::spawn(async move { process(socket).await });
[INFO] [stdout] 26 | |             }
[INFO] [stdout]    | |_____________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 29 |               Ok::<_, io::Error>(())
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/select-syntax-server.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut listener = TcpListener::bind("localhost:3465").await?;
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/select-loop-resume.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let (mut tx, mut rx) = tokio::sync::mpsc::channel(128);
[INFO] [stdout]   |          ----^^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `race` is never used
[INFO] [stdout]   --> src/bin/select-borrow.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | async fn race(
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connection`
[INFO] [stdout]   --> src/bin/select-error.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut connection = mini_redis::Connection::new(socket);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connection`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/select-error.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut connection = mini_redis::Connection::new(socket);
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/select-error.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 15 | /             loop {
[INFO] [stdout] 16 | |                 // This Result will propagated to the res <pattern>
[INFO] [stdout] 17 | |                 let (socket, _) = listener.accept().await?;
[INFO] [stdout] 18 | |                 tokio::spawn(async move { process(socket).await });
[INFO] [stdout] 19 | |             }
[INFO] [stdout]    | |_____________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 23 |               Ok::<_, io::Error>(())
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/select-loop-modifying-a-branch.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let (mut tx, mut rx) = tokio::sync::mpsc::channel(128);
[INFO] [stdout]    |          ----^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 18s
[INFO] running `Command { std: "docker" "inspect" "18c881e876c0632930bb44156978c175385a49a31afdc7f26da92d7d28d00d21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18c881e876c0632930bb44156978c175385a49a31afdc7f26da92d7d28d00d21", kill_on_drop: false }`
[INFO] [stdout] 18c881e876c0632930bb44156978c175385a49a31afdc7f26da92d7d28d00d21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "-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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91dac2a5acb1c90a483fec375b7e4149326de5b4b86ec14c72d53324eb05a20e
[INFO] running `Command { std: "docker" "start" "-a" "91dac2a5acb1c90a483fec375b7e4149326de5b4b86ec14c72d53324eb05a20e", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `BytesMut`
[INFO] [stdout]  --> src/connection_vec_u8.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use bytes::{BufMut, BytesMut};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]  --> src/connection_bytes.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Connection {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_frame`, `parse_frame`, `write_frame`, and `write_decimal` are never used
[INFO] [stdout]    --> src/connection_bytes.rs:16:12
[INFO] [stdout]     |
[INFO] [stdout]  15 | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout]  16 |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  22 |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  40 |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  72 |     async fn write_frame(&mut self, frame: &Frame) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     async fn write_decimal(&mut self, val: u64) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling my-redis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]  --> src/connection_vec_u8.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Connection {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_frame`, and `parse_frame` are never used
[INFO] [stdout]   --> src/connection_vec_u8.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Connection {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncReadExt` and `AsyncWriteExt`
[INFO] [stdout]  --> src/bin/echo-server-split.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use tokio::io::{AsyncReadExt, AsyncWriteExt};
[INFO] [stdout]   |                 ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BytesMut`
[INFO] [stdout]  --> src/connection_vec_u8.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use bytes::{BufMut, BytesMut};
[INFO] [stdout]   |                     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/bin/select-syntax-client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]  --> src/connection_bytes.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Connection {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_frame`, `parse_frame`, `write_frame`, and `write_decimal` are never used
[INFO] [stdout]    --> src/connection_bytes.rs:16:12
[INFO] [stdout]     |
[INFO] [stdout]  15 | impl Connection {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout]  16 |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  22 |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  40 |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  72 |     async fn write_frame(&mut self, frame: &Frame) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 111 |     async fn write_decimal(&mut self, val: u64) -> Result<()> {
[INFO] [stdout]     |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connection` is never constructed
[INFO] [stdout]  --> src/connection_vec_u8.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Connection {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_frame`, and `parse_frame` are never used
[INFO] [stdout]   --> src/connection_vec_u8.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Connection {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(stream: TcpStream) -> Connection {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub async fn read_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn parse_frame(&mut self) -> Result<Option<Frame>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/server.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | /     loop {
[INFO] [stdout] 39 | |         // The first item contains the socket and address of the new connection.
[INFO] [stdout] 40 | |         // The second item contains the IP and port of the new connection.
[INFO] [stdout] 41 | |         let (socket, _) = listener.accept().await?;
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |         });
[INFO] [stdout] 54 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 55 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ShardedDb` is never used
[INFO] [stdout]  --> src/bin/server.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type ShardedDb = Arc<Vec<Mutex<HashMap<String, Bytes>>>>;
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_sharded_db` is never used
[INFO] [stdout]   --> src/bin/server.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn new_sharded_db(n: usize) -> ShardedDb {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/select-pattern-matching.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let (mut tx1, mut rx1): (tokio::sync::mpsc::Sender<Option<String>>, tokio::sync::mpsc::Receiver<Option<String>>) = mpsc::channel(128);
[INFO] [stdout]   |          ----^^^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/select-pattern-matching.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let (mut tx2, mut rx2): (tokio::sync::mpsc::Sender<Option<String>>, tokio::sync::mpsc::Receiver<Option<String>>) = mpsc::channel(128);
[INFO] [stdout]   |          ----^^^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `race` is never used
[INFO] [stdout]   --> src/bin/select-borrow.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | async fn race(
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Delay` is never constructed
[INFO] [stdout]   --> src/bin/mini-tokio.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Delay {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connection`
[INFO] [stdout]   --> src/bin/select-error.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut connection = mini_redis::Connection::new(socket);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connection`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/select-error.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut connection = mini_redis::Connection::new(socket);
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/select-error.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 15 | /             loop {
[INFO] [stdout] 16 | |                 // This Result will propagated to the res <pattern>
[INFO] [stdout] 17 | |                 let (socket, _) = listener.accept().await?;
[INFO] [stdout] 18 | |                 tokio::spawn(async move { process(socket).await });
[INFO] [stdout] 19 | |             }
[INFO] [stdout]    | |_____________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 23 |               Ok::<_, io::Error>(())
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/select-loop-modifying-a-branch.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let (mut tx, mut rx) = tokio::sync::mpsc::channel(128);
[INFO] [stdout]    |          ----^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/select-loop-resume.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let (mut tx, mut rx) = tokio::sync::mpsc::channel(128);
[INFO] [stdout]   |          ----^^
[INFO] [stdout]   |          |
[INFO] [stdout]   |          help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connection`
[INFO] [stdout]   --> src/bin/select-syntax-server.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut connection = mini_redis::Connection::new(socket);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connection`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/select-syntax-server.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut connection = mini_redis::Connection::new(socket);
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/select-syntax-server.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 23 | /             loop {
[INFO] [stdout] 24 | |                 let (socket, _) = listener.accept().await?;
[INFO] [stdout] 25 | |                 tokio::spawn(async move { process(socket).await });
[INFO] [stdout] 26 | |             }
[INFO] [stdout]    | |_____________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 29 |               Ok::<_, io::Error>(())
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/select-syntax-server.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut listener = TcpListener::bind("localhost:3465").await?;
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.08s
[INFO] running `Command { std: "docker" "inspect" "91dac2a5acb1c90a483fec375b7e4149326de5b4b86ec14c72d53324eb05a20e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91dac2a5acb1c90a483fec375b7e4149326de5b4b86ec14c72d53324eb05a20e", kill_on_drop: false }`
[INFO] [stdout] 91dac2a5acb1c90a483fec375b7e4149326de5b4b86ec14c72d53324eb05a20e
