[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] testing bmrxntfj/hello_cargo against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmrxntfj%2Fhello_cargo" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bmrxntfj/hello_cargo on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-8/source/Cargo.toml
[INFO] crate git repo https://github.com/bmrxntfj/hello_cargo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6e57662119541c4a3557b92f1a3b78eb21781ba2b2cdbdc6f346bba873628c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d6e57662119541c4a3557b92f1a3b78eb21781ba2b2cdbdc6f346bba873628c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6e57662119541c4a3557b92f1a3b78eb21781ba2b2cdbdc6f346bba873628c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6e57662119541c4a3557b92f1a3b78eb21781ba2b2cdbdc6f346bba873628c0", kill_on_drop: false }`
[INFO] [stdout] d6e57662119541c4a3557b92f1a3b78eb21781ba2b2cdbdc6f346bba873628c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22af661f80e256273673782f615da57d5be049d8d90f8e68f3c8236d435da412
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "22af661f80e256273673782f615da57d5be049d8d90f8e68f3c8236d435da412", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling 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] 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]     = help: use `//` for a plain comment
[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:213:5
[INFO] [stdout]     |
[INFO] [stdout] 213 | /     while let varx=vari{
[INFO] [stdout] 214 | |         if varx>100 {
[INFO] [stdout] 215 | |             vari=varx+1;
[INFO] [stdout] 216 | |             break;
[INFO] [stdout] ...   |
[INFO] [stdout] 220 | |         }
[INFO] [stdout] 221 | |     };
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[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] 
[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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function`
[INFO] [stdout]  --> src/cypto/nested.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]  --> src/threadpool.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     workers:Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/threadpool.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     id:usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/threadpool.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     thread:thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ThreadPool`
[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 is never used: `Job`
[INFO] [stdout]   --> src/thread/inaccessible.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Job = Box<dyn FnOnce() + Send + 'static>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/thread/inaccessible.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(size:usize)->ThreadPool{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> src/thread/inaccessible.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn execute<F>(&self,f:F)
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Worker`
[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 is never used: `new`
[INFO] [stdout]   --> src/thread/inaccessible.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(id:usize,receiver:Arc<Mutex<mpsc::Receiver<Job>>>)->Worker{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function`
[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: associated function is never used: `rnd`
[INFO] [stdout]   --> src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn rnd<'a>()->Person<'a>{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `execute_fn`
[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 is never used: `execute_fn_mut`
[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 is never used: `noreturn`
[INFO] [stdout]    --> src/main.rs:353:8
[INFO] [stdout]     |
[INFO] [stdout] 353 |     fn noreturn()->!{
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_mod_crate`
[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 is never used: `hello_self`
[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: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.89s
[INFO] running `Command { std: "docker" "inspect" "22af661f80e256273673782f615da57d5be049d8d90f8e68f3c8236d435da412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22af661f80e256273673782f615da57d5be049d8d90f8e68f3c8236d435da412", kill_on_drop: false }`
[INFO] [stdout] 22af661f80e256273673782f615da57d5be049d8d90f8e68f3c8236d435da412
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd2a224bfc4b76bdd5c181185d6a065311379b6871b160ae01d1f9b9e61596ef
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cd2a224bfc4b76bdd5c181185d6a065311379b6871b160ae01d1f9b9e61596ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] 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]     = help: use `//` for a plain comment
[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:213:5
[INFO] [stdout]     |
[INFO] [stdout] 213 | /     while let varx=vari{
[INFO] [stdout] 214 | |         if varx>100 {
[INFO] [stdout] 215 | |             vari=varx+1;
[INFO] [stdout] 216 | |             break;
[INFO] [stdout] ...   |
[INFO] [stdout] 220 | |         }
[INFO] [stdout] 221 | |     };
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[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] 
[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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function`
[INFO] [stdout]  --> src/cypto/nested.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn function() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `workers`
[INFO] [stdout]  --> src/threadpool.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     workers:Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/threadpool.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     id:usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thread`
[INFO] [stdout]   --> src/threadpool.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     thread:thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ThreadPool`
[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 is never used: `Job`
[INFO] [stdout]   --> src/thread/inaccessible.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Job = Box<dyn FnOnce() + Send + 'static>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/thread/inaccessible.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(size:usize)->ThreadPool{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> src/thread/inaccessible.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn execute<F>(&self,f:F)
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Worker`
[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 is never used: `new`
[INFO] [stdout]   --> src/thread/inaccessible.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(id:usize,receiver:Arc<Mutex<mpsc::Receiver<Job>>>)->Worker{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `function`
[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: associated function is never used: `rnd`
[INFO] [stdout]   --> src/main.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn rnd<'a>()->Person<'a>{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_mod_crate`
[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 is never used: `hello_self`
[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: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "cd2a224bfc4b76bdd5c181185d6a065311379b6871b160ae01d1f9b9e61596ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd2a224bfc4b76bdd5c181185d6a065311379b6871b160ae01d1f9b9e61596ef", kill_on_drop: false }`
[INFO] [stdout] cd2a224bfc4b76bdd5c181185d6a065311379b6871b160ae01d1f9b9e61596ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b54bac25039cbcd2bf27d9497ee1d7ba531ed4460f50af7f171b74fe021e3e42
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b54bac25039cbcd2bf27d9497ee1d7ba531ed4460f50af7f171b74fe021e3e42", kill_on_drop: false }`
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/main.rs:151:13
[INFO] [stderr]     |
[INFO] [stderr] 151 |             'secondloop:loop{
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/main.rs:95:8
[INFO] [stderr]     |
[INFO] [stderr] 95  | #[warn(unused_labels)]
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:245:5
[INFO] [stderr]     |
[INFO] [stderr] 245 |     ///println!("box value is {:?}",boxvalue);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 246 | 
[INFO] [stderr] 247 |     let evenlist=vec![2,4,6,8,10];
[INFO] [stderr]     |     ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/main.rs:94:8
[INFO] [stderr]     |
[INFO] [stderr] 94  | #[warn(unused_doc_comments)]
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:300:7
[INFO] [stderr]     |
[INFO] [stderr] 300 |         ///println!("guessed:{}",guess);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 303 | /       let guess:u32=match guess.trim().parse(){
[INFO] [stderr] 304 | |         Ok(num)=>num,
[INFO] [stderr] 305 | |         Err(_)=>continue,
[INFO] [stderr] 306 | |       };
[INFO] [stderr]     | |________- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = help: use `//` for a plain comment
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable `while let` pattern
[INFO] [stderr]    --> src/main.rs:213:5
[INFO] [stderr]     |
[INFO] [stderr] 213 | /     while let varx=vari{
[INFO] [stderr] 214 | |         if varx>100 {
[INFO] [stderr] 215 | |             vari=varx+1;
[INFO] [stderr] 216 | |             break;
[INFO] [stderr] ...   |
[INFO] [stderr] 220 | |         }
[INFO] [stderr] 221 | |     };
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr]     = note: this pattern will always match, so the loop will never exit
[INFO] [stderr]     = help: consider instead using a `loop { ... }` with a `let` inside it
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sum`
[INFO] [stderr]    --> src/main.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |     let sum:i32=0;
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |         let mut stream=tcpstream.unwrap();
[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: function is never used: `function`
[INFO] [stderr]  --> src/cypto/nested.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn function() {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `workers`
[INFO] [stderr]  --> src/threadpool.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     workers:Vec<Worker>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]   --> src/threadpool.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     id:usize,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `thread`
[INFO] [stderr]   --> src/threadpool.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     thread:thread::JoinHandle<()>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ThreadPool`
[INFO] [stderr]  --> src/thread/inaccessible.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct ThreadPool{
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Job`
[INFO] [stderr]   --> src/thread/inaccessible.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | type Job = Box<dyn FnOnce() + Send + 'static>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/thread/inaccessible.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(size:usize)->ThreadPool{
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `execute`
[INFO] [stderr]   --> src/thread/inaccessible.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn execute<F>(&self,f:F)
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Worker`
[INFO] [stderr]   --> src/thread/inaccessible.rs:34:8
[INFO] [stderr]    |
[INFO] [stderr] 34 | struct Worker{
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/thread/inaccessible.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn new(id:usize,receiver:Arc<Mutex<mpsc::Receiver<Job>>>)->Worker{
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `function`
[INFO] [stderr]  --> src/thread/nested.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn function() {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `rnd`
[INFO] [stderr]   --> src/main.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn rnd<'a>()->Person<'a>{
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hello_mod_crate`
[INFO] [stderr]    --> src/main.rs:387:28
[INFO] [stderr]     |
[INFO] [stderr] 387 |     pub(in crate::util) fn hello_mod_crate(){
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hello_self`
[INFO] [stderr]    --> src/main.rs:392:18
[INFO] [stderr]     |
[INFO] [stderr] 392 |     pub(self) fn hello_self(){
[INFO] [stderr]     |                  ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/main.rs:391:12
[INFO] [stderr]     |
[INFO] [stderr] 391 |     #[warn(dead_code)]
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_cargo` (bin "hello_cargo" test) generated 20 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_cargo-7cdb34b6c63e44c0)
[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" "b54bac25039cbcd2bf27d9497ee1d7ba531ed4460f50af7f171b74fe021e3e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b54bac25039cbcd2bf27d9497ee1d7ba531ed4460f50af7f171b74fe021e3e42", kill_on_drop: false }`
[INFO] [stdout] b54bac25039cbcd2bf27d9497ee1d7ba531ed4460f50af7f171b74fe021e3e42