[INFO] cloning repository https://github.com/evrenokcu/rust-features
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/evrenokcu/rust-features" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevrenokcu%2Frust-features", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevrenokcu%2Frust-features'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1475e3dfddfc6db9a93b78610ecceebfc2fcb9fc
[INFO] checking evrenokcu/rust-features against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevrenokcu%2Frust-features" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/evrenokcu/rust-features
[INFO] finished tweaking git repo https://github.com/evrenokcu/rust-features
[INFO] tweaked toml for git repo https://github.com/evrenokcu/rust-features written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/evrenokcu/rust-features on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/evrenokcu/rust-features 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44b586d196fb21c07e713c4aa0ce2350ca909b85b8c401ab03959a0bf534ea0f
[INFO] running `Command { std: "docker" "start" "-a" "44b586d196fb21c07e713c4aa0ce2350ca909b85b8c401ab03959a0bf534ea0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44b586d196fb21c07e713c4aa0ce2350ca909b85b8c401ab03959a0bf534ea0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44b586d196fb21c07e713c4aa0ce2350ca909b85b8c401ab03959a0bf534ea0f", kill_on_drop: false }`
[INFO] [stdout] 44b586d196fb21c07e713c4aa0ce2350ca909b85b8c401ab03959a0bf534ea0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b62ac0e0a402f3ba9788447a8fd7379c4d8a316ba314bcbfc91c9f800fb88ec2
[INFO] running `Command { std: "docker" "start" "-a" "b62ac0e0a402f3ba9788447a8fd7379c4d8a316ba314bcbfc91c9f800fb88ec2", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking uuid v1.10.0
[INFO] [stderr]     Checking rust-features v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/concurrency/rc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]  --> src/concurrency/send_sync.rs:1:39
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ sync::mpsc, thread::{self, Thread}};
[INFO] [stdout]   |                                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/concurrency/send_sync.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ;
[INFO] [stdout]    |     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]  --> src/concurrency/thread_channel_mutex.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 |     thread::{self, Builder, Thread},
[INFO] [stdout]   |                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/generics_traits/generics.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::{write, Display}, ops::Add};
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `blanket_traits::execute`
[INFO] [stdout]  --> src/generics_traits/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use blanket_traits::execute;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::clone`
[INFO] [stdout]  --> src/generics_traits/extension_traits.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::clone;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fs::File` and `path::*`
[INFO] [stdout]  --> src/generics_traits/std_traits/as_ref.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, path::*};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Borrow`
[INFO] [stdout]   --> src/generics_traits/std_traits/cow.rs:80:23
[INFO] [stdout]    |
[INFO] [stdout] 80 |     use std::borrow::{Borrow, Cow};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read`
[INFO] [stdout]  --> src/patterns/command/command.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fs::{read, File},
[INFO] [stdout]   |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/concurrency/rc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]  --> src/concurrency/send_sync.rs:1:39
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ sync::mpsc, thread::{self, Thread}};
[INFO] [stdout]   |                                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/concurrency/send_sync.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ;
[INFO] [stdout]    |     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]  --> src/concurrency/thread_channel_mutex.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 |     thread::{self, Builder, Thread},
[INFO] [stdout]   |                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/generics_traits/generics.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::{write, Display}, ops::Add};
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `blanket_traits::execute`
[INFO] [stdout]  --> src/generics_traits/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use blanket_traits::execute;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::clone`
[INFO] [stdout]  --> src/generics_traits/extension_traits.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::clone;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fs::File` and `path::*`
[INFO] [stdout]  --> src/generics_traits/std_traits/as_ref.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, path::*};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Borrow`
[INFO] [stdout]   --> src/generics_traits/std_traits/cow.rs:80:23
[INFO] [stdout]    |
[INFO] [stdout] 80 |     use std::borrow::{Borrow, Cow};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read`
[INFO] [stdout]  --> src/patterns/command/command.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fs::{read, File},
[INFO] [stdout]   |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/concurrency/linked_list.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Borrow, cell::RefCell, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]   --> src/concurrency/arc_mutex.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let a2 = arc.clone();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]   --> src/concurrency/arc_mutex.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let a3 = arc.clone();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/concurrency/arc_mutex.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut counter = Arc::new(Mutex::new(0));
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `another`
[INFO] [stdout]   --> src/concurrency/life_time.rs:40:23
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn get_desc(&self,another: &str)->&str{
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `coffee1`
[INFO] [stdout]  --> src/concurrency/struct_with_str_ref.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let coffee1 = AnotherCoffee {
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_coffee1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `coffee2`
[INFO] [stdout]   --> src/concurrency/struct_with_str_ref.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let coffee2 = AnotherCoffee {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_coffee2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `thread1`
[INFO] [stdout]   --> src/concurrency/thread_channel_mutex.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let thread1 = thread::spawn(|| println!("thread 1"));
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_thread1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/generics_traits/default_generic_type.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let t=*other as i32;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/generics_traits/downcasting.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let x = String::from("evren");
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/generics_traits/downcasting.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |     if let Some(obj) = item.downcast_ref::<MyStruct1>() {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/generics_traits/downcasting.rs:30:24
[INFO] [stdout]    |
[INFO] [stdout] 30 |     } else if let Some(obj) = item.downcast_ref::<MyStruct2>() {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/generics_traits/fully_qualified_syntax.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let p=Printer2{};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/generics_traits/std_traits/cow.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let y = Cow::Borrowed(&x);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my`
[INFO] [stdout]   --> src/generics_traits/std_traits/mod.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let my: MyStruct = Default::default();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_my`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my2`
[INFO] [stdout]    --> src/generics_traits/std_traits/mod.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let my2 = MyStruct {
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_my2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `otherMy2`
[INFO] [stdout]    --> src/generics_traits/std_traits/mod.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let otherMy2 = MyStruct {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_otherMy2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/matches/match_partially.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let x: Option<Cat> = None;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/old_main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let x = if true { 2 } else { 3 };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/old_main.rs:87:16
[INFO] [stdout]    |
[INFO] [stdout] 87 |         .map(|(k, v)| v)
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/old_main.rs:86:22
[INFO] [stdout]    |
[INFO] [stdout] 86 |         .filter(|(k, v)| *k == 1)
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/types/options.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let s = x.as_str();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc` is never used
[INFO] [stdout]  --> src/concurrency/arc_mutex.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn arc() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/concurrency/life_time.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Person<'a>{
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 53 |     name:&'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `y` is never used
[INFO] [stdout]   --> src/concurrency/life_time.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     static mut y:&'static str="okcu";
[INFO] [stdout]    |                ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/concurrency/linked_list.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct ListItem<T> {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 22 |     data: ItemData<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cur_iter` is never read
[INFO] [stdout]   --> src/concurrency/linked_list.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct LinkedList<T> {
[INFO] [stdout]    |        ---------- field in this struct
[INFO] [stdout] 35 |     head: ListItemPtr<T>,
[INFO] [stdout] 36 |     cur_iter: Option<ListItemPtr<T>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `iter`, `iter_mut`, and `into_iter` are never used
[INFO] [stdout]   --> src/concurrency/linked_list.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<T> LinkedList<T> {
[INFO] [stdout]    | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn iter(&self) -> Iter<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn iter_mut(&mut self) -> IterMut<T> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn into_iter(&mut self) -> IntoIter<T> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Iter` is never constructed
[INFO] [stdout]   --> src/concurrency/linked_list.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | struct Iter<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterMut` is never constructed
[INFO] [stdout]    --> src/concurrency/linked_list.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct IterMut<T> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IntoIter` is never constructed
[INFO] [stdout]    --> src/concurrency/linked_list.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | struct IntoIter<T> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/concurrency/rc.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     struct MyStruct {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 29 |         name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/concurrency/ref_cell.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     struct Node {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 85 |         value: i32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/concurrency/rw_lock.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct MyStruct {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 36 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` 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 `Coffee2` is never constructed
[INFO] [stdout]   --> src/concurrency/send_sync.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Coffee2{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `cost`, and `size` are never read
[INFO] [stdout]  --> src/concurrency/struct_with_str_ref.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) struct AnotherCoffee<'a, C, S> {
[INFO] [stdout]   |                   ------------- fields in this struct
[INFO] [stdout] 2 |     name: &'a str,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 3 |     cost: C,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     size: S,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `s` and `i` are never read
[INFO] [stdout]   --> src/generics_traits/associated_types.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct AnyStruct{
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 25 |     s:String,
[INFO] [stdout]    |     ^
[INFO] [stdout] 26 |     i:i8,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/generics_traits/blanket_traits.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct MyStruct {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 22 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `buf` is never read
[INFO] [stdout]   --> src/generics_traits/const_generics.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct MyBuffer<T, const LENGTH: usize> {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 11 |     buf: [T; LENGTH],
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyBuffer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/generics_traits/downcasting.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct MyStruct1<'a> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 22 |     data: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `item` is never read
[INFO] [stdout]   --> src/generics_traits/marker_traits.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct FullFeaturedContainer<T: FullFeatured> {
[INFO] [stdout]    |        --------------------- field in this struct
[INFO] [stdout] 22 |     item: T,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FullFeaturedContainer` 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 `default_trait` is never used
[INFO] [stdout]   --> src/generics_traits/std_traits/mod.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn default_trait() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Drink` is never used
[INFO] [stdout]   --> src/old_main.rs:60:7
[INFO] [stdout]    |
[INFO] [stdout] 60 | trait Drink: Brew {}
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/old_main.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |     HOT(Option<i8>),
[INFO] [stdout]     |     --- ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TempCategory` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 201 -     HOT(Option<i8>),
[INFO] [stdout] 201 +     HOT(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `make`, `model`, `size`, and `color` are never read
[INFO] [stdout]   --> src/patterns/builder/builder.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Bicycle {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 10 |     make: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |     model: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     size: i32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Bicycle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `make`, `model`, `size`, and `color` are never used
[INFO] [stdout]   --> src/patterns/builder/builder.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Bicycle {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] 16 |     fn make(&self) -> &String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn model(&self) -> &String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn size(&self) -> i32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn color(&self) -> &String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/patterns/new_type/new_type.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct ByteCount(i32);
[INFO] [stdout]   |        --------- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `ByteCount` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_bits` is never used
[INFO] [stdout]   --> src/patterns/new_type/new_type.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl ByteCount {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 18 |     fn to_bits(&self) -> BitCount {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `detach` is never used
[INFO] [stdout]   --> src/patterns/observer/another_observer.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Observable {
[INFO] [stdout]    |       ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn detach(&mut self, observer: Self::Observer);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `state` is never used
[INFO] [stdout]   --> src/patterns/observer/another_observer.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Subject {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn state(&self) -> &str {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `resume_from` is never used
[INFO] [stdout]   --> src/patterns/state_machine/mod.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Session<Initial> {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn resume_from(sessionId: Uuid) -> ResumeResult {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ResumeResult` is never used
[INFO] [stdout]   --> src/patterns/state_machine/mod.rs:63:6
[INFO] [stdout]    |
[INFO] [stdout] 63 | enum ResumeResult {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/reference_objects/reference_objects_lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Student {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 3 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Student` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `id` are never used
[INFO] [stdout]   --> src/reference_objects/reference_objects_lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl Student {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn name(&self) -> &str {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn id(&self) -> i32 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/concurrency/linked_list.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{borrow::Borrow, cell::RefCell, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrency/arc_mutex.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         thread.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let _ = thread.join();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]   --> src/concurrency/arc_mutex.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let a2 = arc.clone();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]   --> src/concurrency/arc_mutex.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let a3 = arc.clone();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `x` should have an upper case name
[INFO] [stdout]   --> src/concurrency/life_time.rs:56:11
[INFO] [stdout]    |
[INFO] [stdout] 56 |     const x:&'static str="evren";
[INFO] [stdout]    |           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 56 -     const x:&'static str="evren";
[INFO] [stdout] 56 +     const X:&'static str="evren";
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `y` should have an upper case name
[INFO] [stdout]   --> src/concurrency/life_time.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     static mut y:&'static str="okcu";
[INFO] [stdout]    |                ^ help: convert the identifier to upper case (notice the capitalization): `Y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrency/thread_channel_mutex.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     thread3.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let _ = thread3.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/concurrency/arc_mutex.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut counter = Arc::new(Mutex::new(0));
[INFO] [stdout]    |         ----^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `coordinateI32` should have a snake case name
[INFO] [stdout]   --> src/generics_traits/generics.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let coordinateI32:Coordinate<i32>=Coordinate{
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: convert the identifier to snake case: `coordinate_i32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `printDisplay` should have a snake case name
[INFO] [stdout]   --> src/generics_traits/generics.rs:67:11
[INFO] [stdout]    |
[INFO] [stdout] 67 |        fn printDisplay(&self){
[INFO] [stdout]    |           ^^^^^^^^^^^^ help: convert the identifier to snake case: `print_display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `printDisplay2` should have a snake case name
[INFO] [stdout]   --> src/generics_traits/generics.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn printDisplay2(&self){
[INFO] [stdout]    |        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `print_display2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `otherMy2` should have a snake case name
[INFO] [stdout]   --> src/generics_traits/std_traits/mod.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let otherMy2 = MyStruct {
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `other_my2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `otherMy2` should have a snake case name
[INFO] [stdout]    --> src/generics_traits/std_traits/mod.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let otherMy2 = MyStruct {
[INFO] [stdout]     |         ^^^^^^^^ help: convert the identifier to snake case: `other_my2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/generics_traits/std_traits/cow.rs:93:25
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn remove_blanks(s: &str) -> Cow<str> {
[INFO] [stdout]    |                         ^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn remove_blanks(s: &str) -> Cow<'_, str> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `another`
[INFO] [stdout]   --> src/concurrency/life_time.rs:40:23
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn get_desc(&self,another: &str)->&str{
[INFO] [stdout]    |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `sessionId` should have a snake case name
[INFO] [stdout]   --> src/patterns/state_machine/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     sessionId: Uuid,
[INFO] [stdout]    |     ^^^^^^^^^ help: convert the identifier to snake case: `session_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sessionId` should have a snake case name
[INFO] [stdout]   --> src/patterns/state_machine/mod.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn resume_from(sessionId: Uuid) -> ResumeResult {
[INFO] [stdout]    |                    ^^^^^^^^^ help: convert the identifier to snake case: `session_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/reference_objects/reference_objects_lib.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn to_ref(&self) -> StudentRef {
[INFO] [stdout]    |               ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |               |
[INFO] [stdout]    |               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn to_ref(&self) -> StudentRef<'_> {
[INFO] [stdout]    |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `coffee1`
[INFO] [stdout]  --> src/concurrency/struct_with_str_ref.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let coffee1 = AnotherCoffee {
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_coffee1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `coroutines` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `coffee2`
[INFO] [stdout]   --> src/concurrency/struct_with_str_ref.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let coffee2 = AnotherCoffee {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_coffee2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `stmt_expr_attributes` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `coroutine_trait` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `thread1`
[INFO] [stdout]   --> src/concurrency/thread_channel_mutex.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let thread1 = thread::spawn(|| println!("thread 1"));
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_thread1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/generics_traits/default_generic_type.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let t=*other as i32;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/generics_traits/downcasting.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let x = String::from("evren");
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/generics_traits/downcasting.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |     if let Some(obj) = item.downcast_ref::<MyStruct1>() {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/generics_traits/downcasting.rs:30:24
[INFO] [stdout]    |
[INFO] [stdout] 30 |     } else if let Some(obj) = item.downcast_ref::<MyStruct2>() {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/generics_traits/fully_qualified_syntax.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let p=Printer2{};
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/generics_traits/std_traits/cow.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let y = Cow::Borrowed(&x);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my`
[INFO] [stdout]   --> src/generics_traits/std_traits/mod.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let my: MyStruct = Default::default();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_my`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my2`
[INFO] [stdout]    --> src/generics_traits/std_traits/mod.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let my2 = MyStruct {
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_my2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `otherMy2`
[INFO] [stdout]    --> src/generics_traits/std_traits/mod.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let otherMy2 = MyStruct {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_otherMy2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/matches/match_partially.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let x: Option<Cat> = None;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/old_main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let x = if true { 2 } else { 3 };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/old_main.rs:87:16
[INFO] [stdout]    |
[INFO] [stdout] 87 |         .map(|(k, v)| v)
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/old_main.rs:86:22
[INFO] [stdout]    |
[INFO] [stdout] 86 |         .filter(|(k, v)| *k == 1)
[INFO] [stdout]    |                      ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/types/options.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let s = x.as_str();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc` is never used
[INFO] [stdout]  --> src/concurrency/arc_mutex.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn arc() {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/concurrency/life_time.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Person<'a>{
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 53 |     name:&'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Person` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `y` is never used
[INFO] [stdout]   --> src/concurrency/life_time.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     static mut y:&'static str="okcu";
[INFO] [stdout]    |                ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/concurrency/linked_list.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct ListItem<T> {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 22 |     data: ItemData<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cur_iter` is never read
[INFO] [stdout]   --> src/concurrency/linked_list.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct LinkedList<T> {
[INFO] [stdout]    |        ---------- field in this struct
[INFO] [stdout] 35 |     head: ListItemPtr<T>,
[INFO] [stdout] 36 |     cur_iter: Option<ListItemPtr<T>>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `iter`, `iter_mut`, and `into_iter` are never used
[INFO] [stdout]   --> src/concurrency/linked_list.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<T> LinkedList<T> {
[INFO] [stdout]    | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn iter(&self) -> Iter<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn iter_mut(&mut self) -> IterMut<T> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn into_iter(&mut self) -> IntoIter<T> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Iter` is never constructed
[INFO] [stdout]   --> src/concurrency/linked_list.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | struct Iter<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IterMut` is never constructed
[INFO] [stdout]    --> src/concurrency/linked_list.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | struct IterMut<T> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IntoIter` is never constructed
[INFO] [stdout]    --> src/concurrency/linked_list.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | struct IntoIter<T> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/concurrency/rc.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     struct MyStruct {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 29 |         name: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/concurrency/ref_cell.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     struct Node {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 85 |         value: i32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/concurrency/rw_lock.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct MyStruct {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 36 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` 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 `Coffee2` is never constructed
[INFO] [stdout]   --> src/concurrency/send_sync.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct Coffee2{
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `cost`, and `size` are never read
[INFO] [stdout]  --> src/concurrency/struct_with_str_ref.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) struct AnotherCoffee<'a, C, S> {
[INFO] [stdout]   |                   ------------- fields in this struct
[INFO] [stdout] 2 |     name: &'a str,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 3 |     cost: C,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     size: S,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `s` and `i` are never read
[INFO] [stdout]   --> src/generics_traits/associated_types.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct AnyStruct{
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 25 |     s:String,
[INFO] [stdout]    |     ^
[INFO] [stdout] 26 |     i:i8,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/generics_traits/blanket_traits.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct MyStruct {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 22 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `buf` is never read
[INFO] [stdout]   --> src/generics_traits/const_generics.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct MyBuffer<T, const LENGTH: usize> {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 11 |     buf: [T; LENGTH],
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyBuffer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/generics_traits/downcasting.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct MyStruct1<'a> {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 22 |     data: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `item` is never read
[INFO] [stdout]   --> src/generics_traits/marker_traits.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct FullFeaturedContainer<T: FullFeatured> {
[INFO] [stdout]    |        --------------------- field in this struct
[INFO] [stdout] 22 |     item: T,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FullFeaturedContainer` 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 `default_trait` is never used
[INFO] [stdout]   --> src/generics_traits/std_traits/mod.rs:95:4
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn default_trait() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Drink` is never used
[INFO] [stdout]   --> src/old_main.rs:60:7
[INFO] [stdout]    |
[INFO] [stdout] 60 | trait Drink: Brew {}
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/old_main.rs:201:9
[INFO] [stdout]     |
[INFO] [stdout] 201 |     HOT(Option<i8>),
[INFO] [stdout]     |     --- ^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TempCategory` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 201 -     HOT(Option<i8>),
[INFO] [stdout] 201 +     HOT(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `make`, `model`, `size`, and `color` are never read
[INFO] [stdout]   --> src/patterns/builder/builder.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Bicycle {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 10 |     make: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |     model: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 12 |     size: i32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     color: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Bicycle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `make`, `model`, `size`, and `color` are never used
[INFO] [stdout]   --> src/patterns/builder/builder.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Bicycle {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] 16 |     fn make(&self) -> &String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn model(&self) -> &String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn size(&self) -> i32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn color(&self) -> &String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/patterns/new_type/new_type.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct ByteCount(i32);
[INFO] [stdout]   |        --------- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `ByteCount` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_bits` is never used
[INFO] [stdout]   --> src/patterns/new_type/new_type.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl ByteCount {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 18 |     fn to_bits(&self) -> BitCount {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `detach` is never used
[INFO] [stdout]   --> src/patterns/observer/another_observer.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | trait Observable {
[INFO] [stdout]    |       ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn detach(&mut self, observer: Self::Observer);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `state` is never used
[INFO] [stdout]   --> src/patterns/observer/another_observer.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Subject {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn state(&self) -> &str {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `resume_from` is never used
[INFO] [stdout]   --> src/patterns/state_machine/mod.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Session<Initial> {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn resume_from(sessionId: Uuid) -> ResumeResult {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ResumeResult` is never used
[INFO] [stdout]   --> src/patterns/state_machine/mod.rs:63:6
[INFO] [stdout]    |
[INFO] [stdout] 63 | enum ResumeResult {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/reference_objects/reference_objects_lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Student {
[INFO] [stdout]   |        ------- field in this struct
[INFO] [stdout] 3 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Student` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `id` are never used
[INFO] [stdout]   --> src/reference_objects/reference_objects_lib.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl Student {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn name(&self) -> &str {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn id(&self) -> i32 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrency/arc_mutex.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         thread.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let _ = thread.join();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `x` should have an upper case name
[INFO] [stdout]   --> src/concurrency/life_time.rs:56:11
[INFO] [stdout]    |
[INFO] [stdout] 56 |     const x:&'static str="evren";
[INFO] [stdout]    |           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 56 -     const x:&'static str="evren";
[INFO] [stdout] 56 +     const X:&'static str="evren";
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `y` should have an upper case name
[INFO] [stdout]   --> src/concurrency/life_time.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     static mut y:&'static str="okcu";
[INFO] [stdout]    |                ^ help: convert the identifier to upper case (notice the capitalization): `Y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrency/thread_channel_mutex.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     thread3.join();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let _ = thread3.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `coordinateI32` should have a snake case name
[INFO] [stdout]   --> src/generics_traits/generics.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let coordinateI32:Coordinate<i32>=Coordinate{
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: convert the identifier to snake case: `coordinate_i32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `printDisplay` should have a snake case name
[INFO] [stdout]   --> src/generics_traits/generics.rs:67:11
[INFO] [stdout]    |
[INFO] [stdout] 67 |        fn printDisplay(&self){
[INFO] [stdout]    |           ^^^^^^^^^^^^ help: convert the identifier to snake case: `print_display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `printDisplay2` should have a snake case name
[INFO] [stdout]   --> src/generics_traits/generics.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn printDisplay2(&self){
[INFO] [stdout]    |        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `print_display2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `otherMy2` should have a snake case name
[INFO] [stdout]   --> src/generics_traits/std_traits/mod.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let otherMy2 = MyStruct {
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `other_my2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `otherMy2` should have a snake case name
[INFO] [stdout]    --> src/generics_traits/std_traits/mod.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let otherMy2 = MyStruct {
[INFO] [stdout]     |         ^^^^^^^^ help: convert the identifier to snake case: `other_my2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/generics_traits/std_traits/cow.rs:93:25
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn remove_blanks(s: &str) -> Cow<str> {
[INFO] [stdout]    |                         ^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn remove_blanks(s: &str) -> Cow<'_, str> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `sessionId` should have a snake case name
[INFO] [stdout]   --> src/patterns/state_machine/mod.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     sessionId: Uuid,
[INFO] [stdout]    |     ^^^^^^^^^ help: convert the identifier to snake case: `session_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `sessionId` should have a snake case name
[INFO] [stdout]   --> src/patterns/state_machine/mod.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn resume_from(sessionId: Uuid) -> ResumeResult {
[INFO] [stdout]    |                    ^^^^^^^^^ help: convert the identifier to snake case: `session_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/reference_objects/reference_objects_lib.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn to_ref(&self) -> StudentRef {
[INFO] [stdout]    |               ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |               |
[INFO] [stdout]    |               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn to_ref(&self) -> StudentRef<'_> {
[INFO] [stdout]    |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `coroutines` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `stmt_expr_attributes` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `coroutine_trait` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "b62ac0e0a402f3ba9788447a8fd7379c4d8a316ba314bcbfc91c9f800fb88ec2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b62ac0e0a402f3ba9788447a8fd7379c4d8a316ba314bcbfc91c9f800fb88ec2", kill_on_drop: false }`
[INFO] [stdout] b62ac0e0a402f3ba9788447a8fd7379c4d8a316ba314bcbfc91c9f800fb88ec2
