[INFO] cloning repository https://github.com/albertisaac12/Learn-Rust-2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/albertisaac12/Learn-Rust-2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falbertisaac12%2FLearn-Rust-2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falbertisaac12%2FLearn-Rust-2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf98e7b1a405ed0f3dd8e7aefc436f455ecd651d
[INFO] fixing albertisaac12/Learn-Rust-2 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falbertisaac12%2FLearn-Rust-2" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/albertisaac12/Learn-Rust-2
[INFO] finished tweaking git repo https://github.com/albertisaac12/Learn-Rust-2
[INFO] tweaked toml for git repo https://github.com/albertisaac12/Learn-Rust-2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/albertisaac12/Learn-Rust-2 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/albertisaac12/Learn-Rust-2 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.22
[INFO] [stderr]   Downloaded zerocopy v0.8.22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 32bee06336445282b084db208993b86348f0050efd1b54f7e0e1cb0d10a00ba1
[INFO] running `Command { std: "docker" "start" "32bee06336445282b084db208993b86348f0050efd1b54f7e0e1cb0d10a00ba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "32bee06336445282b084db208993b86348f0050efd1b54f7e0e1cb0d10a00ba1" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32bee06336445282b084db208993b86348f0050efd1b54f7e0e1cb0d10a00ba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "32bee06336445282b084db208993b86348f0050efd1b54f7e0e1cb0d10a00ba1" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.39
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling zerocopy v0.8.22
[INFO] [stderr]    Compiling syn v2.0.99
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.0
[INFO] [stderr]     Checking Learn-Rust-2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `my_str_2`
[INFO] [stdout]   --> src/Enum/practice.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let my_str_2:&str = &my_string; // this will work automatic dereferencig
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_str_2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/Enum/practice.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     if let Device {status: mv, ..} = d {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mv`
[INFO] [stdout]   --> src/Enum/practice.rs:73:28
[INFO] [stdout]    |
[INFO] [stdout] 73 |     if let Device {status: mv, ..} = d {
[INFO] [stdout]    |                            ^^ help: if this is intentional, prefix it with an underscore: `_mv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/Enum/practice.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Device {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 2 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `nicknameExisists` should have a snake case name
[INFO] [stdout]   --> src/Enum/practice.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn nicknameExisists(meow: &Option<String>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `nickname_exisists`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `isOnline` should have a snake case name
[INFO] [stdout]   --> src/Enum/practice.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn isOnline(d: &Device) {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `is_online`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/ReferenceBorrowing/reference.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let r1 = &s; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]   --> src/ReferenceBorrowing/reference.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let r2 = &s; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r3`
[INFO] [stdout]   --> src/ReferenceBorrowing/reference.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let r3 = &mut s; // BIG PROBLEM
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: renamed to `rng`
[INFO] [stdout]   --> src/GuessingGame/game.rs:27:36
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let secret_number: u32 = rand::thread_rng().gen_range(1..=100);
[INFO] [stdout]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range`
[INFO] [stdout]   --> src/GuessingGame/game.rs:27:49
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let secret_number: u32 = rand::thread_rng().gen_range(1..=100);
[INFO] [stdout]    |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v4` should have an upper camel case name
[INFO] [stdout]  --> src/Enum/enum.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     v4(String),
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `V4`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v6` should have an upper camel case name
[INFO] [stdout]  --> src/Enum/enum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     v6(String)
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `V6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `b` should have an upper camel case name
[INFO] [stdout]  --> src/Enum/enum.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct b {
[INFO] [stdout]   |        ^ help: convert the identifier to upper camel case: `B`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v4` should have an upper camel case name
[INFO] [stdout]  --> src/Enum/enum.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     v4(String),
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `V4`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v4`
[INFO] [stdout]   --> src/Enum/enum.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let v4 = IpAddr::v4(String::from("8.8.8.8"));
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v4`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v6`
[INFO] [stdout]   --> src/Enum/enum.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let v6 = IpAddr::v4(String::from("::1"));
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/Enum/enum.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 |     v4(String),
[INFO] [stdout]   |     -- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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] 2 -     v4(String),
[INFO] [stdout] 2 +     v4(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v6` should have an upper camel case name
[INFO] [stdout]  --> src/Enum/enum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     v6(String)
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `V6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `b` should have an upper camel case name
[INFO] [stdout]  --> src/Enum/enum.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct b {
[INFO] [stdout]   |        ^ help: convert the identifier to upper camel case: `B`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v6` is never constructed
[INFO] [stdout]  --> src/Enum/enum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddr{
[INFO] [stdout]   |      ------ variant in this enum
[INFO] [stdout] 2 |     v4(String),
[INFO] [stdout] 3 |     v6(String)
[INFO] [stdout]   |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `witdh` and `length` are never read
[INFO] [stdout]  --> src/Enum/enum.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct b {
[INFO] [stdout]   |        - fields in this struct
[INFO] [stdout] 7 |     witdh:u32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 8 |     length:u32
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Move`, `Write`, `ChangeColor`, and `Stu` are never constructed
[INFO] [stdout]   --> src/Enum/enum.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 12 |     Quit,
[INFO] [stdout] 13 |     Move { x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     Write(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 15 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 16 |     Stu(b)
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `printQuit` should have a snake case name
[INFO] [stdout]   --> src/Enum/enum.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let printQuit = Message::Quit;
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `print_quit`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v4`
[INFO] [stdout]   --> src/Enum/enum.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let v4 = IpAddr::v4(String::from("8.8.8.8"));
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v4`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v6`
[INFO] [stdout]   --> src/Enum/enum.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let v6 = IpAddr::v4(String::from("::1"));
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/Enum/enum.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 |     v4(String),
[INFO] [stdout]   |     -- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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] 2 -     v4(String),
[INFO] [stdout] 2 +     v4(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v6` is never constructed
[INFO] [stdout]  --> src/Enum/enum.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddr{
[INFO] [stdout]   |      ------ variant in this enum
[INFO] [stdout] 2 |     v4(String),
[INFO] [stdout] 3 |     v6(String)
[INFO] [stdout]   |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `witdh` and `length` are never read
[INFO] [stdout]  --> src/Enum/enum.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct b {
[INFO] [stdout]   |        - fields in this struct
[INFO] [stdout] 7 |     witdh:u32,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 8 |     length:u32
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Move`, `Write`, `ChangeColor`, and `Stu` are never constructed
[INFO] [stdout]   --> src/Enum/enum.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Message {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 12 |     Quit,
[INFO] [stdout] 13 |     Move { x: i32, y: i32 },
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 14 |     Write(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 15 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 16 |     Stu(b)
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/5-statementsAndExpressions.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let x = 10; // statement but the value 10 is a expression
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `printQuit` should have a snake case name
[INFO] [stdout]   --> src/Enum/enum.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let printQuit = Message::Quit;
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `print_quit`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/3-scopeAndShadow.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut spaces = "   ";
[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: `spaces`
[INFO] [stdout]   --> src/3-scopeAndShadow.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let spaces = spaces.len();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_spaces`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]   --> src/3-scopeAndShadow.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let arr =[3; 5];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/3-scopeAndShadow.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let m =s;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `asparagus` should have an upper camel case name
[INFO] [stdout]  --> src/garden/vegetables.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct asparagus{
[INFO] [stdout]   |            ^^^^^^^^^ help: convert the identifier to upper camel case: `Asparagus`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/ReferenceBorrowing/reference.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let r1 = &s; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]   --> src/ReferenceBorrowing/reference.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let r2 = &s; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r3`
[INFO] [stdout]   --> src/ReferenceBorrowing/reference.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let r3 = &mut s; // BIG PROBLEM
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ownership/stackHeap.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut s2 = String::from("hello");
[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 does not need to be mutable
[INFO] [stdout]   --> src/ownership/stackHeap.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut s3 = s2.clone(); // creates a deep copy of the string
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/ownership/stackHeap.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let s1 =s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> src/ownership/stackHeap.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut s3 = s2.clone(); // creates a deep copy of the string
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/ownership/stackHeap.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let s1 = gives_ownership();         // gives_ownership moves its return
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> src/ownership/stackHeap.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let s3 = takes_and_gives_back(s2);  // s2 is moved into
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]   --> src/ownership/stackHeap.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut s = String::from("hello"); // in this case drop will be called and the initial hello will be dropped
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 44 |     s = String::from("ahoy"); // now here s points to ahoy and hello gets dropped
[INFO] [stdout]    |     - `s` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length` is never used
[INFO] [stdout]   --> src/ownership/stackHeap.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn calculate_length(s: String) -> (String, usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: renamed to `rng`
[INFO] [stdout]   --> src/GuessingGame/game.rs:27:36
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let secret_number: u32 = rand::thread_rng().gen_range(1..=100);
[INFO] [stdout]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range`
[INFO] [stdout]   --> src/GuessingGame/game.rs:27:49
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let secret_number: u32 = rand::thread_rng().gen_range(1..=100);
[INFO] [stdout]    |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::slice`
[INFO] [stdout]  --> src/Slice/slice.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::slice;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `wickedArea` should have a snake case name
[INFO] [stdout]   --> src/Struct/structExcersice.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn wickedArea(self)-> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^ help: convert the identifier to snake case: `wicked_area`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/Slice/slice.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let word = modified_first_word(&s);
[INFO] [stdout]    |                                    -- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 24 |     s.clear(); // here error comes because .clear(); takes a mutable reference to the variable s
[INFO] [stdout]    |     ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 25 |
[INFO] [stdout] 26 |     println!("{word}"); // until and unless you use the borrow or a variable assigned to borrow it wont work
[INFO] [stdout]    |                ---- immutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]  --> src/Slice/slice.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let bytes = "0x1".as_bytes();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]   --> src/Slice/slice.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let slice =  &s[0..6]; // slices return string literals
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> src/Enum/if-let.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 18 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 19 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 20 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `matchEnum` should have a snake case name
[INFO] [stdout]   --> src/Enum/if-let.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn matchEnum(blah: &Option<i32>) {
[INFO] [stdout]    |    ^^^^^^^^^ help: convert the identifier to snake case: `match_enum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Learn-Rust-2` (bin "slice") due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: type `asparagus` should have an upper camel case name
[INFO] [stdout]  --> src/garden/vegetables.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct asparagus{
[INFO] [stdout]   |            ^^^^^^^^^ help: convert the identifier to upper camel case: `Asparagus`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/5-statementsAndExpressions.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let x = 10; // statement but the value 10 is a expression
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `unitStruct` should have an upper camel case name
[INFO] [stdout]   --> src/Struct/struct.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct unitStruct;
[INFO] [stdout]    |        ^^^^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `UnitStruct`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/4-dataType.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let(x,y,z) = tup;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::slice`
[INFO] [stdout]  --> src/Slice/slice.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::slice;
[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 variable: `y`
[INFO] [stdout]   --> src/4-dataType.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let(x,y,z) = tup;
[INFO] [stdout]    |           ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/4-dataType.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let(x,y,z) = tup;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/Slice/slice.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let word = modified_first_word(&s);
[INFO] [stdout]    |                                    -- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 24 |     s.clear(); // here error comes because .clear(); takes a mutable reference to the variable s
[INFO] [stdout]    |     ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 25 |
[INFO] [stdout] 26 |     println!("{word}"); // until and unless you use the borrow or a variable assigned to borrow it wont work
[INFO] [stdout]    |                ---- immutable borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]  --> src/Slice/slice.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let bytes = "0x1".as_bytes();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]   --> src/Slice/slice.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let slice =  &s[0..6]; // slices return string literals
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `author` is never read
[INFO] [stdout]   --> src/Project1/LibraryManagemnt.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Book {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 35 |     title: String,
[INFO] [stdout] 36 |     author : String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Book` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `userOps` should have a snake case name
[INFO] [stdout]   --> src/Project1/LibraryManagemnt.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn userOps(&self,book: &mut [Book]) {
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `user_ops`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `unitStruct` should have an upper camel case name
[INFO] [stdout]   --> src/Struct/struct.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct unitStruct;
[INFO] [stdout]    |        ^^^^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `UnitStruct`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `my_str_2`
[INFO] [stdout]   --> src/Enum/practice.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let my_str_2:&str = &my_string; // this will work automatic dereferencig
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_str_2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/Enum/practice.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     if let Device {status: mv, ..} = d {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mv`
[INFO] [stdout]   --> src/Enum/practice.rs:73:28
[INFO] [stdout]    |
[INFO] [stdout] 73 |     if let Device {status: mv, ..} = d {
[INFO] [stdout]    |                            ^^ help: if this is intentional, prefix it with an underscore: `_mv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/Enum/practice.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Device {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 2 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `nicknameExisists` should have a snake case name
[INFO] [stdout]   --> src/Enum/practice.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn nicknameExisists(meow: &Option<String>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `nickname_exisists`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `isOnline` should have a snake case name
[INFO] [stdout]   --> src/Enum/practice.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn isOnline(d: &Device) {
[INFO] [stdout]    |    ^^^^^^^^ help: convert the identifier to snake case: `is_online`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `wickedArea` should have a snake case name
[INFO] [stdout]   --> src/Struct/structExcersice.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn wickedArea(self)-> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^ help: convert the identifier to snake case: `wicked_area`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Learn-Rust-2` (bin "slice" test) due to 1 previous error; 3 warnings emitted
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/Struct/struct.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut user3 =User {
[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 does not need to be mutable
[INFO] [stdout]   --> src/Struct/struct.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut user4 = User {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user3`
[INFO] [stdout]   --> src/Struct/struct.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut user3 =User {
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user5`
[INFO] [stdout]   --> src/Struct/struct.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let user5 = user4;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Black`
[INFO] [stdout]   --> src/Struct/struct.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let Black = Color(0,0,0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_Black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `plane`
[INFO] [stdout]   --> src/Struct/struct.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let plane = Point(1,1,1);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_plane`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `username` and `email` are never read
[INFO] [stdout]  --> src/Struct/struct.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     active:bool,
[INFO] [stdout] 4 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     email:String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_User` is never used
[INFO] [stdout]   --> src/Struct/struct.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn make_User(email: String, active: bool) -> User {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/Struct/struct.rs:61:14
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Color(i32,i32,i32);
[INFO] [stdout]    |        ----- ^^^ ^^^ ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/Struct/struct.rs:62:14
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct Point(i8,i8,i8);
[INFO] [stdout]    |        ----- ^^ ^^ ^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `unitStruct` is never constructed
[INFO] [stdout]   --> src/Struct/struct.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct unitStruct;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Black` should have a snake case name
[INFO] [stdout]   --> src/Struct/struct.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let Black = Color(0,0,0);
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `black`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_User` should have a snake case name
[INFO] [stdout]   --> src/Struct/struct.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn make_User(email: String, active: bool) -> User {
[INFO] [stdout]    |    ^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `make_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ownership/stackHeap.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let mut s2 = String::from("hello");
[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 does not need to be mutable
[INFO] [stdout]   --> src/ownership/stackHeap.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut s3 = s2.clone(); // creates a deep copy of the string
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/ownership/stackHeap.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let s1 =s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> src/ownership/stackHeap.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut s3 = s2.clone(); // creates a deep copy of the string
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/ownership/stackHeap.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let s1 = gives_ownership();         // gives_ownership moves its return
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> src/ownership/stackHeap.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let s3 = takes_and_gives_back(s2);  // s2 is moved into
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]   --> src/ownership/stackHeap.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut s = String::from("hello"); // in this case drop will be called and the initial hello will be dropped
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 44 |     s = String::from("ahoy"); // now here s points to ahoy and hello gets dropped
[INFO] [stdout]    |     - `s` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/4-dataType.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let(x,y,z) = tup;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/4-dataType.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let(x,y,z) = tup;
[INFO] [stdout]    |           ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/4-dataType.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let(x,y,z) = tup;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length` is never used
[INFO] [stdout]   --> src/ownership/stackHeap.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn calculate_length(s: String) -> (String, usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/Struct/struct.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut user3 =User {
[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 does not need to be mutable
[INFO] [stdout]   --> src/Struct/struct.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut user4 = User {
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user3`
[INFO] [stdout]   --> src/Struct/struct.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut user3 =User {
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user3`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user5`
[INFO] [stdout]   --> src/Struct/struct.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let user5 = user4;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Black`
[INFO] [stdout]   --> src/Struct/struct.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let Black = Color(0,0,0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_Black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `plane`
[INFO] [stdout]   --> src/Struct/struct.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let plane = Point(1,1,1);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_plane`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `username` and `email` are never read
[INFO] [stdout]  --> src/Struct/struct.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     active:bool,
[INFO] [stdout] 4 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     email:String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_User` is never used
[INFO] [stdout]   --> src/Struct/struct.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn make_User(email: String, active: bool) -> User {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/Struct/struct.rs:61:14
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Color(i32,i32,i32);
[INFO] [stdout]    |        ----- ^^^ ^^^ ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/Struct/struct.rs:62:14
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct Point(i8,i8,i8);
[INFO] [stdout]    |        ----- ^^ ^^ ^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `unitStruct` is never constructed
[INFO] [stdout]   --> src/Struct/struct.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct unitStruct;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Black` should have a snake case name
[INFO] [stdout]   --> src/Struct/struct.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let Black = Color(0,0,0);
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `black`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_User` should have a snake case name
[INFO] [stdout]   --> src/Struct/struct.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn make_User(email: String, active: bool) -> User {
[INFO] [stdout]    |    ^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `make_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> src/Enum/if-let.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 18 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 19 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 20 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Coin` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `matchEnum` should have a snake case name
[INFO] [stdout]   --> src/Enum/if-let.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn matchEnum(blah: &Option<i32>) {
[INFO] [stdout]    |    ^^^^^^^^^ help: convert the identifier to snake case: `match_enum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "32bee06336445282b084db208993b86348f0050efd1b54f7e0e1cb0d10a00ba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32bee06336445282b084db208993b86348f0050efd1b54f7e0e1cb0d10a00ba1", kill_on_drop: false }`
[INFO] [stdout] 32bee06336445282b084db208993b86348f0050efd1b54f7e0e1cb0d10a00ba1
