[INFO] cloning repository https://github.com/bmrxntfj/hello_cargo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bmrxntfj/hello_cargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmrxntfj%2Fhello_cargo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmrxntfj%2Fhello_cargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d22bb6a59942861b7a454a2af015561f0bb41cf2
[INFO] checking bmrxntfj/hello_cargo against master#dc375db7d8df0aa450e622c529147c95eee756f5 for pr-156749
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmrxntfj%2Fhello_cargo" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bmrxntfj/hello_cargo
[INFO] finished tweaking git repo https://github.com/bmrxntfj/hello_cargo
[INFO] tweaked toml for git repo https://github.com/bmrxntfj/hello_cargo written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bmrxntfj/hello_cargo on toolchain dc375db7d8df0aa450e622c529147c95eee756f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bmrxntfj/hello_cargo 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" "+dc375db7d8df0aa450e622c529147c95eee756f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4297f4b6414fe75b9a4e7b02f7d18a596c1b77205fa03a58908625c9ae8d21dc
[INFO] running `Command { std: "docker" "start" "4297f4b6414fe75b9a4e7b02f7d18a596c1b77205fa03a58908625c9ae8d21dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4297f4b6414fe75b9a4e7b02f7d18a596c1b77205fa03a58908625c9ae8d21dc" "/opt/rustwide/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4297f4b6414fe75b9a4e7b02f7d18a596c1b77205fa03a58908625c9ae8d21dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4297f4b6414fe75b9a4e7b02f7d18a596c1b77205fa03a58908625c9ae8d21dc" "/opt/rustwide/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/main.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             'secondloop:loop{
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:95:8
[INFO] [stdout]     |
[INFO] [stdout]  95 | #[warn(unused_labels)]
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     ///println!("box value is {:?}",boxvalue);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 246 |
[INFO] [stdout] 247 |     let evenlist=vec![2,4,6,8,10];
[INFO] [stdout]     |     ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:94:8
[INFO] [stdout]     |
[INFO] [stdout]  94 | #[warn(unused_doc_comments)]
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:300:7
[INFO] [stdout]     |
[INFO] [stdout] 300 |         ///println!("guessed:{}",guess);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 | /       let guess:u32=match guess.trim().parse(){
[INFO] [stdout] 304 | |         Ok(num)=>num,
[INFO] [stdout] 305 | |         Err(_)=>continue,
[INFO] [stdout] 306 | |       };
[INFO] [stdout]     | |________- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/main.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             'secondloop:loop{
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:95:8
[INFO] [stdout]     |
[INFO] [stdout]  95 | #[warn(unused_labels)]
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 245 |     ///println!("box value is {:?}",boxvalue);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 246 |
[INFO] [stdout] 247 |     let evenlist=vec![2,4,6,8,10];
[INFO] [stdout]     |     ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:94:8
[INFO] [stdout]     |
[INFO] [stdout]  94 | #[warn(unused_doc_comments)]
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:300:7
[INFO] [stdout]     |
[INFO] [stdout] 300 |         ///println!("guessed:{}",guess);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 | /       let guess:u32=match guess.trim().parse(){
[INFO] [stdout] 304 | |         Ok(num)=>num,
[INFO] [stdout] 305 | |         Err(_)=>continue,
[INFO] [stdout] 306 | |       };
[INFO] [stdout]     | |________- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/main.rs:213:11
[INFO] [stdout]     |
[INFO] [stdout] 213 |     while let varx=vari{
[INFO] [stdout]     |           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `while let` pattern
[INFO] [stdout]    --> src/main.rs:213:11
[INFO] [stdout]     |
[INFO] [stdout] 213 |     while let varx=vari{
[INFO] [stdout]     |           ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the loop will never exit
[INFO] [stdout]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout] 101 |         let mut stream=tcpstream.unwrap();
[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: `sum`
[INFO] [stdout]    --> src/main.rs:257:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     let sum:i32=0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]   --> src/main.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Person<'a>{
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 22 |   name:&'a str,
[INFO] [stdout] 23 |   age:u16
[INFO] [stdout]    |   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `rnd` is never used
[INFO] [stdout]   --> src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Person<'_>{
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 27 |     fn rnd<'a>()->Person<'a>{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/main.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Number{
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 56 |     value:i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Number` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]  --> src/cypto/nested.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/threadpool.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ThreadPool{
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 7 |     workers:Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/threadpool.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Worker{
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 35 |     id:usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 36 |     thread:thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ThreadPool` is never constructed
[INFO] [stdout]  --> src/thread/inaccessible.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ThreadPool{
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Job` is never used
[INFO] [stdout]   --> src/thread/inaccessible.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Job = Box<dyn FnOnce() + Send + 'static>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `execute` are never used
[INFO] [stdout]   --> src/thread/inaccessible.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl ThreadPool{
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(size:usize)->ThreadPool{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn execute<F>(&self,f:F)
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Worker` is never constructed
[INFO] [stdout]   --> src/thread/inaccessible.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Worker{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/thread/inaccessible.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Worker{
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 40 |     fn new(id:usize,receiver:Arc<Mutex<mpsc::Receiver<Job>>>)->Worker{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]  --> src/thread/nested.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_mod_crate` is never used
[INFO] [stdout]    --> src/main.rs:387:28
[INFO] [stdout]     |
[INFO] [stdout] 387 |     pub(in crate::util) fn hello_mod_crate(){
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_self` is never used
[INFO] [stdout]    --> src/main.rs:392:18
[INFO] [stdout]     |
[INFO] [stdout] 392 |     pub(self) fn hello_self(){
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:391:12
[INFO] [stdout]     |
[INFO] [stdout] 391 |     #[warn(dead_code)]
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `host`, `port`, and `query` are never read
[INFO] [stdout]    --> src/main.rs:413:13
[INFO] [stdout]     |
[INFO] [stdout] 412 |     pub struct Url{
[INFO] [stdout]     |                --- fields in this struct
[INFO] [stdout] 413 |         pub host:String,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout] 414 |         pub port:u16,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout] 415 |         pub query:String
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Url` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout] 101 |         let mut stream=tcpstream.unwrap();
[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: `sum`
[INFO] [stdout]    --> src/main.rs:257:9
[INFO] [stdout]     |
[INFO] [stdout] 257 |     let sum:i32=0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]   --> src/main.rs:23:3
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Person<'a>{
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 22 |   name:&'a str,
[INFO] [stdout] 23 |   age:u16
[INFO] [stdout]    |   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `rnd` is never used
[INFO] [stdout]   --> src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Person<'_>{
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 27 |     fn rnd<'a>()->Person<'a>{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/main.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Number{
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 56 |     value:i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Number` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_fn` is never used
[INFO] [stdout]    --> src/main.rs:330:8
[INFO] [stdout]     |
[INFO] [stdout] 330 |     fn execute_fn<F>(f:F) where
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_fn_mut` is never used
[INFO] [stdout]    --> src/main.rs:337:8
[INFO] [stdout]     |
[INFO] [stdout] 337 |     fn execute_fn_mut<F>(mut f:F) where
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `noreturn` is never used
[INFO] [stdout]    --> src/main.rs:353:8
[INFO] [stdout]     |
[INFO] [stdout] 353 |     fn noreturn()->!{
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]  --> src/cypto/nested.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/threadpool.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ThreadPool{
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 7 |     workers:Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/threadpool.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Worker{
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 35 |     id:usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 36 |     thread:thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ThreadPool` is never constructed
[INFO] [stdout]  --> src/thread/inaccessible.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ThreadPool{
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Job` is never used
[INFO] [stdout]   --> src/thread/inaccessible.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Job = Box<dyn FnOnce() + Send + 'static>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `execute` are never used
[INFO] [stdout]   --> src/thread/inaccessible.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl ThreadPool{
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(size:usize)->ThreadPool{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn execute<F>(&self,f:F)
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Worker` is never constructed
[INFO] [stdout]   --> src/thread/inaccessible.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Worker{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/thread/inaccessible.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Worker{
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 40 |     fn new(id:usize,receiver:Arc<Mutex<mpsc::Receiver<Job>>>)->Worker{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]  --> src/thread/nested.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_mod_crate` is never used
[INFO] [stdout]    --> src/main.rs:387:28
[INFO] [stdout]     |
[INFO] [stdout] 387 |     pub(in crate::util) fn hello_mod_crate(){
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello_self` is never used
[INFO] [stdout]    --> src/main.rs:392:18
[INFO] [stdout]     |
[INFO] [stdout] 392 |     pub(self) fn hello_self(){
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:391:12
[INFO] [stdout]     |
[INFO] [stdout] 391 |     #[warn(dead_code)]
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `host`, `port`, and `query` are never read
[INFO] [stdout]    --> src/main.rs:413:13
[INFO] [stdout]     |
[INFO] [stdout] 412 |     pub struct Url{
[INFO] [stdout]     |                --- fields in this struct
[INFO] [stdout] 413 |         pub host:String,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout] 414 |         pub port:u16,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout] 415 |         pub query:String
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Url` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `Command { std: "docker" "inspect" "4297f4b6414fe75b9a4e7b02f7d18a596c1b77205fa03a58908625c9ae8d21dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4297f4b6414fe75b9a4e7b02f7d18a596c1b77205fa03a58908625c9ae8d21dc", kill_on_drop: false }`
[INFO] [stdout] 4297f4b6414fe75b9a4e7b02f7d18a596c1b77205fa03a58908625c9ae8d21dc
