[INFO] cloning repository https://github.com/Q0heleth/my-redis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Q0heleth/my-redis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQ0heleth%2Fmy-redis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQ0heleth%2Fmy-redis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9521473f9cb85da73688a0f8dc4cc778cf8c025
[INFO] checking Q0heleth/my-redis against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQ0heleth%2Fmy-redis" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Q0heleth/my-redis
[INFO] finished tweaking git repo https://github.com/Q0heleth/my-redis
[INFO] tweaked toml for git repo https://github.com/Q0heleth/my-redis written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Q0heleth/my-redis on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Q0heleth/my-redis 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atoi v0.3.3
[INFO] [stderr]   Downloaded tokio v1.19.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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_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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b62e517955ef040f8ce83e776ef74661e78ca746ce8744e73548498e848cbb20
[INFO] running `Command { std: "docker" "start" "-a" "b62e517955ef040f8ce83e776ef74661e78ca746ce8744e73548498e848cbb20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b62e517955ef040f8ce83e776ef74661e78ca746ce8744e73548498e848cbb20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b62e517955ef040f8ce83e776ef74661e78ca746ce8744e73548498e848cbb20", kill_on_drop: false }`
[INFO] [stdout] b62e517955ef040f8ce83e776ef74661e78ca746ce8744e73548498e848cbb20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 677f0a066ec9769d04d8b5b95af7338a5d8ca1bc660825d4b959cde37bb0db89
[INFO] running `Command { std: "docker" "start" "-a" "677f0a066ec9769d04d8b5b95af7338a5d8ca1bc660825d4b959cde37bb0db89", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling serde v1.0.138
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking num_cpus v1.13.1
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[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking atoi v0.3.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling pin-project-internal v1.0.11
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.3
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking async-stream v0.3.3
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking pin-project v1.0.11
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking tokio-stream v0.1.9
[INFO] [stderr]     Checking my-redis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `bytes::Bytes`
[INFO] [stdout]  --> src/server.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use bytes::Bytes;
[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: `debug`
[INFO] [stdout]  --> src/server.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tracing::{debug, error, info, instrument};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]  --> src/server.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::{net::{TcpListener, TcpStream}, sync::{Semaphore, broadcast, mpsc}};
[INFO] [stdout]   |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `db::Db`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use db::Db;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `db::DbDropGuard`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use db::DbDropGuard;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::time::Instant`
[INFO] [stdout]  --> src/cmd/set.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmd::Set`
[INFO] [stdout]  --> src/lib.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 |  use cmd::Set;
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmd::Get`
[INFO] [stdout]  --> src/lib.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 |  use cmd::Get;
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Command`
[INFO] [stdout]  --> src/client.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{connection::Connection, cmd::{Command, Set, Get}, frame::Frame};
[INFO] [stdout]   |                                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Client`
[INFO] [stdout]   --> src/lib.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 | use client::{Client};
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bytes::Bytes`
[INFO] [stdout]  --> src/server.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use bytes::Bytes;
[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: `debug`
[INFO] [stdout]  --> src/server.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tracing::{debug, error, info, instrument};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]  --> src/server.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::{net::{TcpListener, TcpStream}, sync::{Semaphore, broadcast, mpsc}};
[INFO] [stdout]   |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `db::Db`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use db::Db;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `db::DbDropGuard`
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use db::DbDropGuard;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::time::Instant`
[INFO] [stdout]  --> src/cmd/set.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmd::Set`
[INFO] [stdout]  --> src/lib.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 |  use cmd::Set;
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmd::Get`
[INFO] [stdout]  --> src/lib.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 |  use cmd::Get;
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Command`
[INFO] [stdout]  --> src/client.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{connection::Connection, cmd::{Command, Set, Get}, frame::Frame};
[INFO] [stdout]   |                                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Client`
[INFO] [stdout]   --> src/lib.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 | use client::{Client};
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shutdown`
[INFO] [stdout]   --> src/cmd/mod.rs:27:68
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub(crate) async fn apply(self,db:&db::Db,conn:&mut Connection,shutdown:&mut Shutdown)-> crate::Result<()> {
[INFO] [stdout]    |                                                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_shutdown`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/frame.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 for i in  0..len {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/frame.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |                  for i in  0..len {
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_CONNECTIONS` is never used
[INFO] [stdout]  --> src/server.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const MAX_CONNECTIONS:usize =250;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `shutdown_complete_rx` and `shutdown_complete_tx` are never read
[INFO] [stdout]   --> src/server.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Listener {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     shutdown_complete_rx:mpsc::Receiver<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 18 |     shutdown_complete_tx:mpsc::Sender<()>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Listener` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `limit_connections` is never read
[INFO] [stdout]   --> src/server.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Handler {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 22 |     db :Db,
[INFO] [stdout] 23 |     limit_connections: Arc<Semaphore>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Handler` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `expiration_at` are never read
[INFO] [stdout]   --> src/db.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub(crate) struct Entry {
[INFO] [stdout]    |                   ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 32 |     id:u64,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 33 |     data:Bytes,
[INFO] [stdout] 34 |     expiration_at:Option<Instant>
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Entry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_string` is never used
[INFO] [stdout]    --> src/connection.rs:109:25
[INFO] [stdout]     |
[INFO] [stdout]  14 | impl Connection {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 109 |     pub(crate) async fn write_string(&mut self,s:String) ->crate::Result<()> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `finish` and `next_int` are never used
[INFO] [stdout]   --> src/parse.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Parse {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub(crate) fn finish(&mut self) -> Result<(),ParseError> {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub(crate) fn next_int(&mut self) -> Result<u64,ParseError> {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_string` is never used
[INFO] [stdout]    --> src/frame.rs:147:19
[INFO] [stdout]     |
[INFO] [stdout]  51 | impl Frame {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 147 |     pub(crate) fn from_string(s:String) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shutdown`
[INFO] [stdout]   --> src/cmd/mod.rs:27:68
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub(crate) async fn apply(self,db:&db::Db,conn:&mut Connection,shutdown:&mut Shutdown)-> crate::Result<()> {
[INFO] [stdout]    |                                                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_shutdown`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/frame.rs:140:18
[INFO] [stdout]     |
[INFO] [stdout] 140 |                  skip(src, end);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 140 |                  let _ = skip(src, end);
[INFO] [stdout]     |                  +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/frame.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 for i in  0..len {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/frame.rs:118:22
[INFO] [stdout]     |
[INFO] [stdout] 118 |                  for i in  0..len {
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_CONNECTIONS` is never used
[INFO] [stdout]  --> src/server.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const MAX_CONNECTIONS:usize =250;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `shutdown_complete_rx` and `shutdown_complete_tx` are never read
[INFO] [stdout]   --> src/server.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Listener {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 17 |     shutdown_complete_rx:mpsc::Receiver<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 18 |     shutdown_complete_tx:mpsc::Sender<()>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Listener` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `limit_connections` is never read
[INFO] [stdout]   --> src/server.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Handler {
[INFO] [stdout]    |        ------- field in this struct
[INFO] [stdout] 22 |     db :Db,
[INFO] [stdout] 23 |     limit_connections: Arc<Semaphore>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Handler` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `expiration_at` are never read
[INFO] [stdout]   --> src/db.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub(crate) struct Entry {
[INFO] [stdout]    |                   ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 32 |     id:u64,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 33 |     data:Bytes,
[INFO] [stdout] 34 |     expiration_at:Option<Instant>
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Entry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write_string` is never used
[INFO] [stdout]    --> src/connection.rs:109:25
[INFO] [stdout]     |
[INFO] [stdout]  14 | impl Connection {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 109 |     pub(crate) async fn write_string(&mut self,s:String) ->crate::Result<()> {
[INFO] [stdout]     |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `finish` and `next_int` are never used
[INFO] [stdout]   --> src/parse.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Parse {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub(crate) fn finish(&mut self) -> Result<(),ParseError> {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub(crate) fn next_int(&mut self) -> Result<u64,ParseError> {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_string` is never used
[INFO] [stdout]    --> src/frame.rs:147:19
[INFO] [stdout]     |
[INFO] [stdout]  51 | impl Frame {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 147 |     pub(crate) fn from_string(s:String) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/frame.rs:140:18
[INFO] [stdout]     |
[INFO] [stdout] 140 |                  skip(src, end);
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 140 |                  let _ = skip(src, end);
[INFO] [stdout]     |                  +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.87s
[INFO] running `Command { std: "docker" "inspect" "677f0a066ec9769d04d8b5b95af7338a5d8ca1bc660825d4b959cde37bb0db89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "677f0a066ec9769d04d8b5b95af7338a5d8ca1bc660825d4b959cde37bb0db89", kill_on_drop: false }`
[INFO] [stdout] 677f0a066ec9769d04d8b5b95af7338a5d8ca1bc660825d4b959cde37bb0db89
