[INFO] cloning repository https://github.com/M-Isonni/learning_Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/M-Isonni/learning_Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FM-Isonni%2Flearning_Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FM-Isonni%2Flearning_Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5ed7c9e772ff95a1ca633c6a84905ba46300147
[INFO] checking M-Isonni/learning_Rust/e5ed7c9e772ff95a1ca633c6a84905ba46300147 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FM-Isonni%2Flearning_Rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/M-Isonni/learning_Rust on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/M-Isonni/learning_Rust
[INFO] finished tweaking git repo https://github.com/M-Isonni/learning_Rust
[INFO] tweaked toml for git repo https://github.com/M-Isonni/learning_Rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/M-Isonni/learning_Rust 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 481256f9fbebfcdb11fcea3f00c3ba32dd08b26673309419926bfbb16ca8bd57
[INFO] running `Command { std: "docker" "start" "-a" "481256f9fbebfcdb11fcea3f00c3ba32dd08b26673309419926bfbb16ca8bd57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "481256f9fbebfcdb11fcea3f00c3ba32dd08b26673309419926bfbb16ca8bd57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "481256f9fbebfcdb11fcea3f00c3ba32dd08b26673309419926bfbb16ca8bd57", kill_on_drop: false }`
[INFO] [stdout] 481256f9fbebfcdb11fcea3f00c3ba32dd08b26673309419926bfbb16ca8bd57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ea67fb0df1d6330a88bf3bbbed1ec8c9828d80f838c9915f8bdc1495c8fb09f
[INFO] running `Command { std: "docker" "start" "-a" "4ea67fb0df1d6330a88bf3bbbed1ec8c9828d80f838c9915f8bdc1495c8fb09f", kill_on_drop: false }`
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/matches.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut count = 0;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/matches.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         count += 1;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/panics.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let f = match f{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/panics.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let f = File::open("hello.txt").map_err(|error| {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/panics.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let f = File::open("hello.txt").unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/panics.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/panics.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let res = match res{
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second_result`
[INFO] [stdout]    --> src/panics.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let second_result = match second_result{
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `third_result`
[INFO] [stdout]    --> src/panics.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let third_result = match third_result {
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_third_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/panics.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |     let f = File::open("hello.txt")?;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/matches.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut count = 0;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/matches.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |         count += 1;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `both_integer`
[INFO] [stdout]    --> src/generics.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let both_integer = Point { x: 5, y: 10 };
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `integer_and_float`
[INFO] [stdout]    --> src/generics.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let integer_and_float = Point { x: 5, y: 4.0 };   
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer_and_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/traits.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let s = t.clone();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/traits.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let r = u.clone();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/panics.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let f = match f{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/panics.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let f = File::open("hello.txt").map_err(|error| {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/panics.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let f = File::open("hello.txt").unwrap();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/panics.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]   --> src/panics.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let res = match res{
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second_result`
[INFO] [stdout]    --> src/panics.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let second_result = match second_result{
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `third_result`
[INFO] [stdout]    --> src/panics.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let third_result = match third_result {
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_third_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/panics.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |     let f = File::open("hello.txt")?;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `email` is never read
[INFO] [stdout]  --> src/structs.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct User{
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 2 |     pub name: String,
[INFO] [stdout] 3 |     pub email: String,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `address_num` is never read
[INFO] [stdout]   --> src/enums.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct IPv4{
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 30 |     address:String,
[INFO] [stdout] 31 |     address_num:(u8,u8,u8,u8),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IPv4` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed
[INFO] [stdout]  --> src/matches.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Coin {
[INFO] [stdout]   |      ---- variants in this enum
[INFO] [stdout] 3 |     Penny,
[INFO] [stdout] 4 |     Nickel,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 5 |     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] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alabama` is never constructed
[INFO] [stdout]   --> src/matches.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum UsState {
[INFO] [stdout]    |      ------- variant in this enum
[INFO] [stdout] 11 |     Alabama,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UsState` 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 `make_panic` is never used
[INFO] [stdout]  --> src/panics.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn make_panic(){
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `out_of_index_panic` is never used
[INFO] [stdout]   --> src/panics.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn out_of_index_panic(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_map_error` is never used
[INFO] [stdout]   --> src/panics.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn make_map_error(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_expect_error` is never used
[INFO] [stdout]   --> src/panics.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn make_expect_error(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `general_larget` is never used
[INFO] [stdout]   --> src/generics.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn general_larget<T: PartialOrd + Clone>(list: &[T])->T{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `summarize` is never used
[INFO] [stdout]  --> src/traits.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Summary {
[INFO] [stdout]   |           ------- method in this trait
[INFO] [stdout] 6 |     fn summarize(&self) -> String;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `content` is never read
[INFO] [stdout]   --> src/traits.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct NewsArticle {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub content: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `reply` and `retweet` are never read
[INFO] [stdout]   --> src/traits.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Tweet {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub reply: bool,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 26 |     pub retweet: bool,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/traits.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn notify(item: impl Summary) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify_overload` is never used
[INFO] [stdout]   --> src/traits.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn notify_overload<T: Summary>(item1: T, item2: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify_adding_traits` is never used
[INFO] [stdout]   --> src/traits.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn notify_adding_traits<T: Summary + Debug>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `some_function` is never used
[INFO] [stdout]   --> src/traits.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn some_function<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarizable` is never used
[INFO] [stdout]   --> src/traits.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> src/traits.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | struct Pair<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/traits.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl<T> Pair<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 95 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/traits.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 104 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `both_integer`
[INFO] [stdout]    --> src/generics.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let both_integer = Point { x: 5, y: 10 };
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_both_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `integer_and_float`
[INFO] [stdout]    --> src/generics.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let integer_and_float = Point { x: 5, y: 4.0 };   
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer_and_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/traits.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let s = t.clone();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/traits.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let r = u.clone();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `email` is never read
[INFO] [stdout]  --> src/structs.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct User{
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 2 |     pub name: String,
[INFO] [stdout] 3 |     pub email: String,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `address_num` is never read
[INFO] [stdout]   --> src/enums.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct IPv4{
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 30 |     address:String,
[INFO] [stdout] 31 |     address_num:(u8,u8,u8,u8),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IPv4` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed
[INFO] [stdout]  --> src/matches.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum Coin {
[INFO] [stdout]   |      ---- variants in this enum
[INFO] [stdout] 3 |     Penny,
[INFO] [stdout] 4 |     Nickel,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 5 |     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] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alabama` is never constructed
[INFO] [stdout]   --> src/matches.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum UsState {
[INFO] [stdout]    |      ------- variant in this enum
[INFO] [stdout] 11 |     Alabama,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UsState` 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 `make_panic` is never used
[INFO] [stdout]  --> src/panics.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn make_panic(){
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `out_of_index_panic` is never used
[INFO] [stdout]   --> src/panics.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn out_of_index_panic(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_map_error` is never used
[INFO] [stdout]   --> src/panics.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn make_map_error(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_expect_error` is never used
[INFO] [stdout]   --> src/panics.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn make_expect_error(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `general_larget` is never used
[INFO] [stdout]   --> src/generics.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn general_larget<T: PartialOrd + Clone>(list: &[T])->T{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `summarize` is never used
[INFO] [stdout]  --> src/traits.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Summary {
[INFO] [stdout]   |           ------- method in this trait
[INFO] [stdout] 6 |     fn summarize(&self) -> String;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `content` is never read
[INFO] [stdout]   --> src/traits.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct NewsArticle {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub content: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `reply` and `retweet` are never read
[INFO] [stdout]   --> src/traits.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Tweet {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub reply: bool,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 26 |     pub retweet: bool,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/traits.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn notify(item: impl Summary) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify_overload` is never used
[INFO] [stdout]   --> src/traits.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn notify_overload<T: Summary>(item1: T, item2: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify_adding_traits` is never used
[INFO] [stdout]   --> src/traits.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn notify_adding_traits<T: Summary + Debug>(item: T) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `some_function` is never used
[INFO] [stdout]   --> src/traits.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn some_function<T, U>(t: T, u: U) -> i32
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarizable` is never used
[INFO] [stdout]   --> src/traits.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> src/traits.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | struct Pair<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/traits.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl<T> Pair<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 95 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cmp_display` is never used
[INFO] [stdout]    --> src/traits.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 104 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "4ea67fb0df1d6330a88bf3bbbed1ec8c9828d80f838c9915f8bdc1495c8fb09f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ea67fb0df1d6330a88bf3bbbed1ec8c9828d80f838c9915f8bdc1495c8fb09f", kill_on_drop: false }`
[INFO] [stdout] 4ea67fb0df1d6330a88bf3bbbed1ec8c9828d80f838c9915f8bdc1495c8fb09f