[INFO] cloning repository https://github.com/VrMolodyakov/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VrMolodyakov/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVrMolodyakov%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVrMolodyakov%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e10aaf65f97eda8583da3021af4298703e0ea77b
[INFO] testing VrMolodyakov/rust-practice against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVrMolodyakov%2Frust-practice" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VrMolodyakov/rust-practice on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VrMolodyakov/rust-practice
[INFO] finished tweaking git repo https://github.com/VrMolodyakov/rust-practice
[INFO] tweaked toml for git repo https://github.com/VrMolodyakov/rust-practice written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/VrMolodyakov/rust-practice 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4c1edd612573704524a7485f5df63e00ac860409e68fe77bd2479d1ac979520
[INFO] running `Command { std: "docker" "start" "-a" "b4c1edd612573704524a7485f5df63e00ac860409e68fe77bd2479d1ac979520", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4c1edd612573704524a7485f5df63e00ac860409e68fe77bd2479d1ac979520", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4c1edd612573704524a7485f5df63e00ac860409e68fe77bd2479d1ac979520", kill_on_drop: false }`
[INFO] [stdout] b4c1edd612573704524a7485f5df63e00ac860409e68fe77bd2479d1ac979520
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfebad68806143226e181ec2cf665cfc46e437ae0d008ba568e4cbdcc7ec29db
[INFO] running `Command { std: "docker" "start" "-a" "bfebad68806143226e181ec2cf665cfc46e437ae0d008ba568e4cbdcc7ec29db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling socket2 v0.4.7
[INFO] [stderr]    Compiling mio v0.8.5
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tokio-macros v1.8.2
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `foo` should have an upper camel case name
[INFO] [stdout]   --> src/func.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Foo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/func.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/pin.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let x = self.f.as_mut();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `until_char` is never used
[INFO] [stdout]   --> src/strsplit.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn until_char(str:&str,c:char) -> &'_ str{
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exml` is never constructed
[INFO] [stdout]   --> src/dispatch.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Exml{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bar` is never used
[INFO] [stdout]  --> src/func.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn bar<T> (){}
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_fn` is never used
[INFO] [stdout]  --> src/func.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn call_fn(f:fn()){
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure` is never used
[INFO] [stdout]  --> src/func.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn take_by_ref(i:&i32){
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `s` and `n` are never read
[INFO] [stdout]   --> src/func.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 38 |     s:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 39 |     n:String
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `foo` 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 `take_struct_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn take_struct_by_ref(f:&foo){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]   --> src/func.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct RefHolder<'a> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 48 |     x: &'a i64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefHolder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/func.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<'a> RefHolder<'a> {
[INFO] [stdout]    | ---------------------- associated function in this implementation
[INFO] [stdout] 52 |     fn new(x: &'a i64) -> RefHolder<'a> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ready` is never constructed
[INFO] [stdout]  --> src/pin.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Ready<T>{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_t` is never used
[INFO] [stdout]   --> src/pin.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<F> MyFuture<F>{
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 13 |     fn get_t(&mut self){
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOCKED` is never used
[INFO] [stdout]  --> src/atomics.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const LOCKED:bool = true;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `locked` and `v` are never read
[INFO] [stdout]  --> src/atomics.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Mutex<T>{
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 8 |     locked: AtomicBool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     v:UnsafeCell<T>
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_lock` is never used
[INFO] [stdout]   --> src/atomics.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> Mutex<T>{
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn with_lock<R>(&self,f:impl FnOnce(&mut T) -> R) ->R{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `channel` is never used
[INFO] [stdout]   --> src/channel.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn channel<T>() ->(Sender<T>,Receiver<T>){
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> src/main.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let (tx, mut rx) = oneshot::channel::<()>();
[INFO] [stdout]    |          ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `content` and `id` are never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Message{
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 24 |     content:String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     id:i32
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.96s
[INFO] running `Command { std: "docker" "inspect" "bfebad68806143226e181ec2cf665cfc46e437ae0d008ba568e4cbdcc7ec29db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfebad68806143226e181ec2cf665cfc46e437ae0d008ba568e4cbdcc7ec29db", kill_on_drop: false }`
[INFO] [stdout] bfebad68806143226e181ec2cf665cfc46e437ae0d008ba568e4cbdcc7ec29db
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38b565336b5a756487318304168da6bff6482ddeda3744261d0d9cd87ed1ecfc
[INFO] running `Command { std: "docker" "start" "-a" "38b565336b5a756487318304168da6bff6482ddeda3744261d0d9cd87ed1ecfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `foo` should have an upper camel case name
[INFO] [stdout]   --> src/func.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Foo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/func.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/pin.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let x = self.f.as_mut();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `until_char` is never used
[INFO] [stdout]   --> src/strsplit.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn until_char(str:&str,c:char) -> &'_ str{
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exml` is never constructed
[INFO] [stdout]   --> src/dispatch.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Exml{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bar` is never used
[INFO] [stdout]  --> src/func.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn bar<T> (){}
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_fn` is never used
[INFO] [stdout]  --> src/func.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn call_fn(f:fn()){
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure` is never used
[INFO] [stdout]  --> src/func.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn take_by_ref(i:&i32){
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `s` and `n` are never read
[INFO] [stdout]   --> src/func.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 38 |     s:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 39 |     n:String
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `foo` 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 `take_struct_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn take_struct_by_ref(f:&foo){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]   --> src/func.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct RefHolder<'a> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 48 |     x: &'a i64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefHolder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/func.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<'a> RefHolder<'a> {
[INFO] [stdout]    | ---------------------- associated function in this implementation
[INFO] [stdout] 52 |     fn new(x: &'a i64) -> RefHolder<'a> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ready` is never constructed
[INFO] [stdout]  --> src/pin.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Ready<T>{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_t` is never used
[INFO] [stdout]   --> src/pin.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<F> MyFuture<F>{
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 13 |     fn get_t(&mut self){
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOCKED` is never used
[INFO] [stdout]  --> src/atomics.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const LOCKED:bool = true;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `locked` and `v` are never read
[INFO] [stdout]  --> src/atomics.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Mutex<T>{
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 8 |     locked: AtomicBool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     v:UnsafeCell<T>
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_lock` is never used
[INFO] [stdout]   --> src/atomics.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> Mutex<T>{
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn with_lock<R>(&self,f:impl FnOnce(&mut T) -> R) ->R{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `channel` is never used
[INFO] [stdout]   --> src/channel.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn channel<T>() ->(Sender<T>,Receiver<T>){
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `foo` should have an upper camel case name
[INFO] [stdout]   --> src/func.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Foo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/func.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/pin.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let x = self.f.as_mut();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hello`
[INFO] [stdout]   --> src/strtok.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let hello = strtok(&mut s, ' ');
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exml` is never constructed
[INFO] [stdout]   --> src/dispatch.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Exml{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn take_by_ref(i:&i32){
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `s` and `n` are never read
[INFO] [stdout]   --> src/func.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 38 |     s:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 39 |     n:String
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `foo` 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 `take_struct_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn take_struct_by_ref(f:&foo){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]   --> src/func.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct RefHolder<'a> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 48 |     x: &'a i64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefHolder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ready` is never constructed
[INFO] [stdout]  --> src/pin.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Ready<T>{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_t` is never used
[INFO] [stdout]   --> src/pin.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<F> MyFuture<F>{
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 13 |     fn get_t(&mut self){
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOCKED` is never used
[INFO] [stdout]  --> src/atomics.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const LOCKED:bool = true;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `locked` and `v` are never read
[INFO] [stdout]  --> src/atomics.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Mutex<T>{
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 8 |     locked: AtomicBool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     v:UnsafeCell<T>
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_lock` is never used
[INFO] [stdout]   --> src/atomics.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> Mutex<T>{
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn with_lock<R>(&self,f:impl FnOnce(&mut T) -> R) ->R{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> src/main.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let (tx, mut rx) = oneshot::channel::<()>();
[INFO] [stdout]    |          ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `content` and `id` are never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Message{
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 24 |     content:String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     id:i32
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "38b565336b5a756487318304168da6bff6482ddeda3744261d0d9cd87ed1ecfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38b565336b5a756487318304168da6bff6482ddeda3744261d0d9cd87ed1ecfc", kill_on_drop: false }`
[INFO] [stdout] 38b565336b5a756487318304168da6bff6482ddeda3744261d0d9cd87ed1ecfc
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 512bcb6c504fda3aedde2b62eaa984159bca85580fe8362d6f83f223cd55b395
[INFO] running `Command { std: "docker" "start" "-a" "512bcb6c504fda3aedde2b62eaa984159bca85580fe8362d6f83f223cd55b395", kill_on_drop: false }`
[INFO] [stderr] warning: type `foo` should have an upper camel case name
[INFO] [stderr]   --> src/func.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct foo{
[INFO] [stderr]    |        ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Foo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]  --> src/func.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn closure<F>(f:F)
[INFO] [stderr]   |               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/pin.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let x = self.f.as_mut();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: function `until_char` is never used
[INFO] [stderr]   --> src/strsplit.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn until_char(str:&str,c:char) -> &'_ str{
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Exml` is never constructed
[INFO] [stderr]   --> src/dispatch.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct Exml{
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `bar` is never used
[INFO] [stderr]  --> src/func.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn bar<T> (){}
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `call_fn` is never used
[INFO] [stderr]  --> src/func.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn call_fn(f:fn()){
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `closure` is never used
[INFO] [stderr]  --> src/func.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn closure<F>(f:F)
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `take_by_ref` is never used
[INFO] [stderr]   --> src/func.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn take_by_ref(i:&i32){
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `s` and `n` are never read
[INFO] [stderr]   --> src/func.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct foo{
[INFO] [stderr]    |        --- fields in this struct
[INFO] [stderr] 38 |     s:i32,
[INFO] [stderr]    |     ^
[INFO] [stderr] 39 |     n:String
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `take_struct_by_ref` is never used
[INFO] [stderr]   --> src/func.rs:42:4
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn take_struct_by_ref(f:&foo){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `x` is never read
[INFO] [stderr]   --> src/func.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | struct RefHolder<'a> {
[INFO] [stderr]    |        --------- field in this struct
[INFO] [stderr] 48 |     x: &'a i64,
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `RefHolder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/func.rs:52:8
[INFO] [stderr]    |
[INFO] [stderr] 51 | impl<'a> RefHolder<'a> {
[INFO] [stderr]    | ---------------------- associated function in this implementation
[INFO] [stderr] 52 |     fn new(x: &'a i64) -> RefHolder<'a> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ready` is never constructed
[INFO] [stderr]  --> src/pin.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Ready<T>{
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_t` is never used
[INFO] [stderr]   --> src/pin.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl<F> MyFuture<F>{
[INFO] [stderr]    | ------------------- method in this implementation
[INFO] [stderr] 13 |     fn get_t(&mut self){
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LOCKED` is never used
[INFO] [stderr]  --> src/atomics.rs:3:7
[INFO] [stderr]   |
[INFO] [stderr] 3 | const LOCKED:bool = true;
[INFO] [stderr]   |       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `locked` and `v` are never read
[INFO] [stderr]  --> src/atomics.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Mutex<T>{
[INFO] [stderr]   |            ----- fields in this struct
[INFO] [stderr] 8 |     locked: AtomicBool,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 9 |     v:UnsafeCell<T>
[INFO] [stderr]   |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: method `with_lock` is never used
[INFO] [stderr]   --> src/atomics.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl<T> Mutex<T>{
[INFO] [stderr]    | ---------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 21 |     fn with_lock<R>(&self,f:impl FnOnce(&mut T) -> R) ->R{
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `channel` is never used
[INFO] [stderr]   --> src/channel.rs:83:4
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn channel<T>() ->(Sender<T>,Receiver<T>){
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]   --> src/strtok.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let hello = strtok(&mut s, ' ');
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Exml` is never constructed
[INFO] [stderr]   --> src/dispatch.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct Exml{
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-practice` (lib) generated 19 warnings (run `cargo fix --lib -p rust-practice` to apply 2 suggestions)
[INFO] [stderr] warning: `rust-practice` (lib test) generated 14 warnings (12 duplicates) (run `cargo fix --lib -p rust-practice --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tx`
[INFO] [stderr]   --> src/main.rs:50:10
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let (tx, mut rx) = oneshot::channel::<()>();
[INFO] [stderr]    |          ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `content` and `id` are never read
[INFO] [stderr]   --> src/main.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub struct Message{
[INFO] [stderr]    |            ------- fields in this struct
[INFO] [stderr] 24 |     content:String,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 25 |     id:i32
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-practice` (bin "rust-practice" test) generated 4 warnings (run `cargo fix --bin "rust-practice" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_practice-0afde4b6356d934b)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test strsplit::it_work ... ok
[INFO] [stdout] test flat::two_wide ... ok
[INFO] [stdout] test func::it_works ... ok
[INFO] [stdout] test dispatch::trait_work ... ok
[INFO] [stdout] test func::test_mut_by_read_ref ... ok
[INFO] [stdout] test flat::one ... ok
[INFO] [stdout] test dispatch::it_work ... ok
[INFO] [stdout] test strtok::it_works ... ok
[INFO] [stdout] test strsplit::until_char_test ... ok
[INFO] [stdout] test channel::ping_pong has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "512bcb6c504fda3aedde2b62eaa984159bca85580fe8362d6f83f223cd55b395", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512bcb6c504fda3aedde2b62eaa984159bca85580fe8362d6f83f223cd55b395", kill_on_drop: false }`
[INFO] [stdout] 512bcb6c504fda3aedde2b62eaa984159bca85580fe8362d6f83f223cd55b395
[INFO] testing VrMolodyakov/rust-practice against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVrMolodyakov%2Frust-practice" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VrMolodyakov/rust-practice on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VrMolodyakov/rust-practice
[INFO] finished tweaking git repo https://github.com/VrMolodyakov/rust-practice
[INFO] tweaked toml for git repo https://github.com/VrMolodyakov/rust-practice written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/VrMolodyakov/rust-practice 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2fabe343b7700e4f8113e6f1bc449bd905e6cb9265f443f2fb92d3987e8fd9a
[INFO] running `Command { std: "docker" "start" "-a" "d2fabe343b7700e4f8113e6f1bc449bd905e6cb9265f443f2fb92d3987e8fd9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2fabe343b7700e4f8113e6f1bc449bd905e6cb9265f443f2fb92d3987e8fd9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2fabe343b7700e4f8113e6f1bc449bd905e6cb9265f443f2fb92d3987e8fd9a", kill_on_drop: false }`
[INFO] [stdout] d2fabe343b7700e4f8113e6f1bc449bd905e6cb9265f443f2fb92d3987e8fd9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a018aab7fb1892d2669311631bb435baa417d25c17dbd729ce4817845511e13
[INFO] running `Command { std: "docker" "start" "-a" "3a018aab7fb1892d2669311631bb435baa417d25c17dbd729ce4817845511e13", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.8.5
[INFO] [stderr]    Compiling socket2 v0.4.7
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tokio-macros v1.8.2
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `foo` should have an upper camel case name
[INFO] [stdout]   --> src/func.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Foo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/func.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/pin.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let x = self.f.as_mut();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `until_char` is never used
[INFO] [stdout]   --> src/strsplit.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn until_char(str:&str,c:char) -> &'_ str{
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exml` is never constructed
[INFO] [stdout]   --> src/dispatch.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Exml{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bar` is never used
[INFO] [stdout]  --> src/func.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn bar<T> (){}
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_fn` is never used
[INFO] [stdout]  --> src/func.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn call_fn(f:fn()){
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure` is never used
[INFO] [stdout]  --> src/func.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn take_by_ref(i:&i32){
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `s` and `n` are never read
[INFO] [stdout]   --> src/func.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 38 |     s:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 39 |     n:String
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `foo` 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 `take_struct_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn take_struct_by_ref(f:&foo){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]   --> src/func.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct RefHolder<'a> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 48 |     x: &'a i64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefHolder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/func.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<'a> RefHolder<'a> {
[INFO] [stdout]    | ---------------------- associated function in this implementation
[INFO] [stdout] 52 |     fn new(x: &'a i64) -> RefHolder<'a> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ready` is never constructed
[INFO] [stdout]  --> src/pin.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Ready<T>{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_t` is never used
[INFO] [stdout]   --> src/pin.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<F> MyFuture<F>{
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 13 |     fn get_t(&mut self){
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOCKED` is never used
[INFO] [stdout]  --> src/atomics.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const LOCKED:bool = true;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `locked` and `v` are never read
[INFO] [stdout]  --> src/atomics.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Mutex<T>{
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 8 |     locked: AtomicBool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     v:UnsafeCell<T>
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_lock` is never used
[INFO] [stdout]   --> src/atomics.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> Mutex<T>{
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn with_lock<R>(&self,f:impl FnOnce(&mut T) -> R) ->R{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `channel` is never used
[INFO] [stdout]   --> src/channel.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn channel<T>() ->(Sender<T>,Receiver<T>){
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> src/main.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let (tx, mut rx) = oneshot::channel::<()>();
[INFO] [stdout]    |          ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `content` and `id` are never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Message{
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 24 |     content:String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     id:i32
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.98s
[INFO] running `Command { std: "docker" "inspect" "3a018aab7fb1892d2669311631bb435baa417d25c17dbd729ce4817845511e13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a018aab7fb1892d2669311631bb435baa417d25c17dbd729ce4817845511e13", kill_on_drop: false }`
[INFO] [stdout] 3a018aab7fb1892d2669311631bb435baa417d25c17dbd729ce4817845511e13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dca7b313fbe2fc8059aa9a96b6b4d7178a4a3229af18ebfa2ee83eeb808bd141
[INFO] running `Command { std: "docker" "start" "-a" "dca7b313fbe2fc8059aa9a96b6b4d7178a4a3229af18ebfa2ee83eeb808bd141", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `foo` should have an upper camel case name
[INFO] [stdout]   --> src/func.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Foo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/func.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/pin.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let x = self.f.as_mut();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `until_char` is never used
[INFO] [stdout]   --> src/strsplit.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn until_char(str:&str,c:char) -> &'_ str{
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exml` is never constructed
[INFO] [stdout]   --> src/dispatch.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Exml{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bar` is never used
[INFO] [stdout]  --> src/func.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn bar<T> (){}
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_fn` is never used
[INFO] [stdout]  --> src/func.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn call_fn(f:fn()){
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure` is never used
[INFO] [stdout]  --> src/func.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn take_by_ref(i:&i32){
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `s` and `n` are never read
[INFO] [stdout]   --> src/func.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 38 |     s:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 39 |     n:String
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `foo` 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 `take_struct_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn take_struct_by_ref(f:&foo){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]   --> src/func.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct RefHolder<'a> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 48 |     x: &'a i64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefHolder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/func.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl<'a> RefHolder<'a> {
[INFO] [stdout]    | ---------------------- associated function in this implementation
[INFO] [stdout] 52 |     fn new(x: &'a i64) -> RefHolder<'a> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ready` is never constructed
[INFO] [stdout]  --> src/pin.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Ready<T>{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_t` is never used
[INFO] [stdout]   --> src/pin.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<F> MyFuture<F>{
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 13 |     fn get_t(&mut self){
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOCKED` is never used
[INFO] [stdout]  --> src/atomics.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const LOCKED:bool = true;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `locked` and `v` are never read
[INFO] [stdout]  --> src/atomics.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Mutex<T>{
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 8 |     locked: AtomicBool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     v:UnsafeCell<T>
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_lock` is never used
[INFO] [stdout]   --> src/atomics.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> Mutex<T>{
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn with_lock<R>(&self,f:impl FnOnce(&mut T) -> R) ->R{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `channel` is never used
[INFO] [stdout]   --> src/channel.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn channel<T>() ->(Sender<T>,Receiver<T>){
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `foo` should have an upper camel case name
[INFO] [stdout]   --> src/func.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Foo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/func.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn closure<F>(f:F)
[INFO] [stdout]   |               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/pin.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let x = self.f.as_mut();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hello`
[INFO] [stdout]   --> src/strtok.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let hello = strtok(&mut s, ' ');
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Exml` is never constructed
[INFO] [stdout]   --> src/dispatch.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Exml{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn take_by_ref(i:&i32){
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `s` and `n` are never read
[INFO] [stdout]   --> src/func.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct foo{
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 38 |     s:i32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 39 |     n:String
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `foo` 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 `take_struct_by_ref` is never used
[INFO] [stdout]   --> src/func.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn take_struct_by_ref(f:&foo){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]   --> src/func.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct RefHolder<'a> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 48 |     x: &'a i64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefHolder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ready` is never constructed
[INFO] [stdout]  --> src/pin.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Ready<T>{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_t` is never used
[INFO] [stdout]   --> src/pin.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<F> MyFuture<F>{
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 13 |     fn get_t(&mut self){
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOCKED` is never used
[INFO] [stdout]  --> src/atomics.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const LOCKED:bool = true;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> src/main.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let (tx, mut rx) = oneshot::channel::<()>();
[INFO] [stdout]    |          ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `locked` and `v` are never read
[INFO] [stdout]  --> src/atomics.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Mutex<T>{
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 8 |     locked: AtomicBool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 9 |     v:UnsafeCell<T>
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_lock` is never used
[INFO] [stdout]   --> src/atomics.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> Mutex<T>{
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn with_lock<R>(&self,f:impl FnOnce(&mut T) -> R) ->R{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `content` and `id` are never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Message{
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 24 |     content:String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     id:i32
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "dca7b313fbe2fc8059aa9a96b6b4d7178a4a3229af18ebfa2ee83eeb808bd141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dca7b313fbe2fc8059aa9a96b6b4d7178a4a3229af18ebfa2ee83eeb808bd141", kill_on_drop: false }`
[INFO] [stdout] dca7b313fbe2fc8059aa9a96b6b4d7178a4a3229af18ebfa2ee83eeb808bd141
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ebf52936ad21e4476e5d824e7de87707f89fa7abe8dd7a3fe6b14fd4335c46cf
[INFO] running `Command { std: "docker" "start" "-a" "ebf52936ad21e4476e5d824e7de87707f89fa7abe8dd7a3fe6b14fd4335c46cf", kill_on_drop: false }`
[INFO] [stderr] warning: type `foo` should have an upper camel case name
[INFO] [stderr]   --> src/func.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct foo{
[INFO] [stderr]    |        ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Foo`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]  --> src/func.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn closure<F>(f:F)
[INFO] [stderr]   |               ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/pin.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let x = self.f.as_mut();
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: function `until_char` is never used
[INFO] [stderr]   --> src/strsplit.rs:55:4
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn until_char(str:&str,c:char) -> &'_ str{
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Exml` is never constructed
[INFO] [stderr]   --> src/dispatch.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct Exml{
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `bar` is never used
[INFO] [stderr]  --> src/func.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn bar<T> (){}
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `call_fn` is never used
[INFO] [stderr]  --> src/func.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn call_fn(f:fn()){
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `closure` is never used
[INFO] [stderr]  --> src/func.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn closure<F>(f:F)
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `take_by_ref` is never used
[INFO] [stderr]   --> src/func.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn take_by_ref(i:&i32){
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `s` and `n` are never read
[INFO] [stderr]   --> src/func.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct foo{
[INFO] [stderr]    |        --- fields in this struct
[INFO] [stderr] 38 |     s:i32,
[INFO] [stderr]    |     ^
[INFO] [stderr] 39 |     n:String
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `take_struct_by_ref` is never used
[INFO] [stderr]   --> src/func.rs:42:4
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn take_struct_by_ref(f:&foo){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `x` is never read
[INFO] [stderr]   --> src/func.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 47 | struct RefHolder<'a> {
[INFO] [stderr]    |        --------- field in this struct
[INFO] [stderr] 48 |     x: &'a i64,
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `RefHolder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/func.rs:52:8
[INFO] [stderr]    |
[INFO] [stderr] 51 | impl<'a> RefHolder<'a> {
[INFO] [stderr]    | ---------------------- associated function in this implementation
[INFO] [stderr] 52 |     fn new(x: &'a i64) -> RefHolder<'a> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ready` is never constructed
[INFO] [stderr]  --> src/pin.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Ready<T>{
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_t` is never used
[INFO] [stderr]   --> src/pin.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl<F> MyFuture<F>{
[INFO] [stderr]    | ------------------- method in this implementation
[INFO] [stderr] 13 |     fn get_t(&mut self){
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LOCKED` is never used
[INFO] [stderr]  --> src/atomics.rs:3:7
[INFO] [stderr]   |
[INFO] [stderr] 3 | const LOCKED:bool = true;
[INFO] [stderr]   |       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `locked` and `v` are never read
[INFO] [stderr]  --> src/atomics.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Mutex<T>{
[INFO] [stderr]   |            ----- fields in this struct
[INFO] [stderr] 8 |     locked: AtomicBool,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 9 |     v:UnsafeCell<T>
[INFO] [stderr]   |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: method `with_lock` is never used
[INFO] [stderr]   --> src/atomics.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl<T> Mutex<T>{
[INFO] [stderr]    | ---------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 21 |     fn with_lock<R>(&self,f:impl FnOnce(&mut T) -> R) ->R{
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `channel` is never used
[INFO] [stderr]   --> src/channel.rs:83:4
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn channel<T>() ->(Sender<T>,Receiver<T>){
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hello`
[INFO] [stderr]   --> src/strtok.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let hello = strtok(&mut s, ' ');
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Exml` is never constructed
[INFO] [stderr]   --> src/dispatch.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct Exml{
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-practice` (lib) generated 19 warnings (run `cargo fix --lib -p rust-practice` to apply 2 suggestions)
[INFO] [stderr] warning: `rust-practice` (lib test) generated 14 warnings (12 duplicates) (run `cargo fix --lib -p rust-practice --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tx`
[INFO] [stderr]   --> src/main.rs:50:10
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let (tx, mut rx) = oneshot::channel::<()>();
[INFO] [stderr]    |          ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `content` and `id` are never read
[INFO] [stderr]   --> src/main.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub struct Message{
[INFO] [stderr]    |            ------- fields in this struct
[INFO] [stderr] 24 |     content:String,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 25 |     id:i32
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-practice` (bin "rust-practice" test) generated 4 warnings (run `cargo fix --bin "rust-practice" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_practice-fae44105be4657d2)
[INFO] [stdout] running 10 tests
[INFO] [stdout] test dispatch::trait_work ... ok
[INFO] [stdout] test flat::two_wide ... ok
[INFO] [stdout] test flat::one ... ok
[INFO] [stdout] test dispatch::it_work ... ok
[INFO] [stdout] test strsplit::until_char_test ... ok
[INFO] [stdout] test strtok::it_works ... ok
[INFO] [stdout] test strsplit::it_work ... ok
[INFO] [stdout] test func::it_works ... ok
[INFO] [stdout] test func::test_mut_by_read_ref ... ok
[INFO] [stdout] test channel::ping_pong has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "ebf52936ad21e4476e5d824e7de87707f89fa7abe8dd7a3fe6b14fd4335c46cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebf52936ad21e4476e5d824e7de87707f89fa7abe8dd7a3fe6b14fd4335c46cf", kill_on_drop: false }`
[INFO] [stdout] ebf52936ad21e4476e5d824e7de87707f89fa7abe8dd7a3fe6b14fd4335c46cf
