[INFO] cloning repository https://github.com/AdoyoClifford/Rustup
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AdoyoClifford/Rustup" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdoyoClifford%2FRustup", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdoyoClifford%2FRustup'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b6a301cfb7b7ab087eefd7f586557187f65a6e4
[INFO] checking AdoyoClifford/Rustup against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdoyoClifford%2FRustup" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AdoyoClifford/Rustup on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AdoyoClifford/Rustup
[INFO] finished tweaking git repo https://github.com/AdoyoClifford/Rustup
[INFO] tweaked toml for git repo https://github.com/AdoyoClifford/Rustup written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AdoyoClifford/Rustup 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.90
[INFO] [stderr]   Downloaded hermit-abi v0.3.4
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d26000a22a1953af9e4522480fe04f2009563e05d14f0c7c3c8ec4b404701be
[INFO] running `Command { std: "docker" "start" "-a" "6d26000a22a1953af9e4522480fe04f2009563e05d14f0c7c3c8ec4b404701be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d26000a22a1953af9e4522480fe04f2009563e05d14f0c7c3c8ec4b404701be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d26000a22a1953af9e4522480fe04f2009563e05d14f0c7c3c8ec4b404701be", kill_on_drop: false }`
[INFO] [stdout] 6d26000a22a1953af9e4522480fe04f2009563e05d14f0c7c3c8ec4b404701be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 404bbc3afbfa80a1cbb38402a8e8f2c16e1d85b24c1c2097b2a068ec83eb67f1
[INFO] running `Command { std: "docker" "start" "-a" "404bbc3afbfa80a1cbb38402a8e8f2c16e1d85b24c1c2097b2a068ec83eb67f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling winnow v0.5.36
[INFO] [stderr]     Checking const-oid v0.9.6
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling indexmap v2.2.2
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking der v0.7.8
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]     Checking smallvec v1.13.1
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[INFO] [stderr]     Checking byte-slice-cast v1.2.2
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[INFO] [stderr]    Compiling rustix v0.38.31
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[INFO] [stderr]    Compiling num-traits v0.2.17
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[INFO] [stderr]     Checking memchr v2.7.1
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[INFO] [stderr]    Compiling rand_chacha v0.3.1
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[INFO] [stderr]     Checking ecdsa v0.16.9
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[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.90
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking k256 v0.13.3
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling rustls v0.21.10
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
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[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling tokio-macros v2.2.0
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[INFO] [stderr]    Compiling rlp-derive v0.1.0
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[INFO] [stderr]     Checking regex v1.10.3
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[INFO] [stderr]     Checking futures-util v0.3.30
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[INFO] [stderr]     Checking try-lock v0.2.5
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[INFO] [stderr]     Checking tempfile v3.9.0
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[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.90
[INFO] [stderr]     Checking chrono v0.4.33
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[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking openssl-probe v0.1.5
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[INFO] [stderr]    Compiling wasm-bindgen v0.2.90
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[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.90
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[INFO] [stderr]    Compiling toml_datetime v0.6.5
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[INFO] [stderr]    Compiling toml_edit v0.19.15
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[INFO] [stderr]     Checking cargo_metadata v0.18.1
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[INFO] [stderr]    Compiling proc-macro-crate v2.0.0
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
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[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling async-trait v0.1.77
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[INFO] [stderr]     Checking parity-scale-codec v3.6.9
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[INFO] [stderr]    Compiling pin-project-internal v1.1.4
[INFO] [stderr]     Checking rustls-pemfile v1.0.4
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[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking primitive-types v0.12.2
[INFO] [stderr]     Checking ethbloom v0.13.0
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[INFO] [stderr]     Checking hyper-tls v0.5.0
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[INFO] [stderr]    Compiling indenter v0.3.3
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[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking ethereum-types v0.14.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking coins-core v0.8.7
[INFO] [stderr]     Checking tungstenite v0.20.1
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking pin-project v1.1.4
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[INFO] [stderr]     Checking ethers-core v2.0.13
[INFO] [stderr]    Compiling toml v0.8.9
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[INFO] [stderr]    Compiling dunce v1.0.4
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[INFO] [stderr]     Checking scrypt v0.10.0
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[INFO] [stderr]     Checking tokio-tungstenite v0.20.1
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[INFO] [stderr]     Checking pbkdf2 v0.12.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking futures-locks v0.7.1
[INFO] [stderr]     Checking eth-keystore v0.5.0
[INFO] [stderr]     Checking coins-bip39 v0.8.7
[INFO] [stderr]     Checking ethers-providers v2.0.13
[INFO] [stderr]     Checking ethers-contract-abigen v2.0.13
[INFO] [stderr]     Checking ethers-etherscan v2.0.13
[INFO] [stderr]     Checking ethers-signers v2.0.13
[INFO] [stderr]     Checking ethers-addressbook v2.0.13
[INFO] [stderr]    Compiling ethers-contract-derive v2.0.13
[INFO] [stderr]     Checking ethers-contract v2.0.13
[INFO] [stderr]     Checking ethers-middleware v2.0.13
[INFO] [stderr]     Checking ethers v2.0.13
[INFO] [stderr]     Checking playaround v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Change_Color` should have an upper camel case name
[INFO] [stdout]  --> src/m6_patterns.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Change_Color(i32, i32, i32),
[INFO] [stdout]   |     ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ChangeColor`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Change_Color` should have an upper camel case name
[INFO] [stdout]  --> src/m6_patterns.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Change_Color(i32, i32, i32),
[INFO] [stdout]   |     ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `ChangeColor`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Message` is imported redundantly
[INFO] [stdout]   --> src/m6_patterns.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     use super::Message;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 27 |
[INFO] [stdout] 28 |     use super::*;
[INFO] [stdout]    |         -------- the item `Message` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/m6_patterns.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let b: u8 = 0b_010010010;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `CarColor` is never used
[INFO] [stdout]  --> src/m1_enums.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum CarColor {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GivenResult` is never used
[INFO] [stdout]   --> src/m1_enums.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum GivenResult<T, E> {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GivenOption` is never used
[INFO] [stdout]   --> src/m1_enums.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum GivenOption<T> {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_remainder` is never used
[INFO] [stdout]   --> src/m1_enums.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn check_remainder(num: f32) -> GivenOption<f32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_number_under_five` is never used
[INFO] [stdout]   --> src/m1_enums.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn check_number_under_five(num: u8) -> GivenResult<u8, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_number_under_five_built_in` is never used
[INFO] [stdout]   --> src/m1_enums.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn check_number_under_five_built_in(num: u8) -> Result<u8, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_car_color` is never used
[INFO] [stdout]   --> src/m1_enums.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn create_car_color() -> CarColor {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/m2_stucts.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_username` is never used
[INFO] [stdout]  --> src/m2_stucts.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn change_username(user: &mut User, new_name: &str) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `increment_count`, `change_email`, and `change_name` are never used
[INFO] [stdout]   --> src/m2_stucts.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl User {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 14 |     fn increment_count(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn change_email(&mut self, new_email: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn change_name(&mut self, new_name: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Attacker` is never used
[INFO] [stdout]  --> src/m3_traits.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Attacker {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `EtheriumAddress` is never used
[INFO] [stdout]  --> src/m4_polymorphism.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait EtheriumAddress {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_etherium_data` is never used
[INFO] [stdout]   --> src/m4_polymorphism.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn get_etherium_data<T: EtheriumAddress>(address: T) -> Address {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/m5_lifetime.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | struct Person<'p> {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 75 |     name: &'p str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]  --> src/m6_patterns.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Message {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_message` is never used
[INFO] [stdout]  --> src/m6_patterns.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn process_message(msg: Message) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_name`
[INFO] [stdout]   --> src/m2_stucts.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let new_name = change_username(&mut user, "somenewuser");
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/m6_patterns.rs:82:30
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Location { x: 0, y } => println!("On y axis"),
[INFO] [stdout]    |                              ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/m6_patterns.rs:83:24
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Location { x, y: 0 } => println!("On x axis"),
[INFO] [stdout]    |                        ^ help: try ignoring the field: `x: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err_result`
[INFO] [stdout]    --> src/m6_patterns.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |         let err_result: Result<&str, &str> = Err("404");
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_err_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]    --> src/m6_patterns.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let res = match result {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let b: u8 = 0b_010010010;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `RED`, `GREEN`, and `YELLOW` are never constructed
[INFO] [stdout]  --> src/m1_enums.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum CarColor {
[INFO] [stdout]   |      -------- variants in this enum
[INFO] [stdout] 3 |     RED,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     BLUE,
[INFO] [stdout] 5 |     GREEN,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     YELLOW,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CarColor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GivenResult` is never used
[INFO] [stdout]   --> src/m1_enums.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum GivenResult<T, E> {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_number_under_five` is never used
[INFO] [stdout]   --> src/m1_enums.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn check_number_under_five(num: u8) -> GivenResult<u8, String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `email` and `is_active` are never read
[INFO] [stdout]  --> src/m2_stucts.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     name: String,
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     is_active: bool,
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `change_email` and `change_name` are never used
[INFO] [stdout]   --> src/m2_stucts.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl User {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn change_email(&mut self, new_email: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn change_name(&mut self, new_name: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `EtheriumAddress` is never used
[INFO] [stdout]  --> src/m4_polymorphism.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait EtheriumAddress {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_etherium_data` is never used
[INFO] [stdout]   --> src/m4_polymorphism.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn get_etherium_data<T: EtheriumAddress>(address: T) -> Address {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/m5_lifetime.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | struct Person<'p> {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 75 |     name: &'p str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/m1_enums.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         dbg!(under_five_res);
[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)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `chosen_fighting_Style` should have a snake case name
[INFO] [stdout]   --> src/m3_traits.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let chosen_fighting_Style = my_character.choose_style();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `chosen_fighting_style`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 29s
[INFO] running `Command { std: "docker" "inspect" "404bbc3afbfa80a1cbb38402a8e8f2c16e1d85b24c1c2097b2a068ec83eb67f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "404bbc3afbfa80a1cbb38402a8e8f2c16e1d85b24c1c2097b2a068ec83eb67f1", kill_on_drop: false }`
[INFO] [stdout] 404bbc3afbfa80a1cbb38402a8e8f2c16e1d85b24c1c2097b2a068ec83eb67f1