[INFO] cloning repository https://github.com/selloriwoo/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/selloriwoo/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fselloriwoo%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fselloriwoo%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90d4a88ddc0bbb505c660e5c6e9c6ea5759744b2
[INFO] testing selloriwoo/rust-practice against 1.97.0-beta.6 for beta-1.98-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fselloriwoo%2Frust-practice" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/selloriwoo/rust-practice
[INFO] finished tweaking git repo https://github.com/selloriwoo/rust-practice
[INFO] tweaked toml for git repo https://github.com/selloriwoo/rust-practice written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/selloriwoo/rust-practice on toolchain 1.97.0-beta.6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/selloriwoo/rust-practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.97.0-beta.6" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141
[INFO] running `Command { std: "docker" "start" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141", 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" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141", 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=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cmp::Ordering`
[INFO] [stdout]   --> src/lib.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 | use std::{cmp::Ordering, io};
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::*`
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | use std::collections::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/lib.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function1` is never used
[INFO] [stdout]   --> src/lib.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn function1() -> fmt::Result {
[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 `function2` is never used
[INFO] [stdout]   --> src/lib.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn function2() -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/lib.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> src/lib.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 71 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/lib.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 89 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]    --> src/lib.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 | struct Shoe {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoes_in_size` is never used
[INFO] [stdout]    --> src/lib.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MockMessenger` is never constructed
[INFO] [stdout]    --> src/lib.rs:179:12
[INFO] [stdout]     |
[INFO] [stdout] 179 |     struct MockMessenger {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:184:12
[INFO] [stdout]     |
[INFO] [stdout] 183 |     impl MockMessenger {
[INFO] [stdout]     |     ------------------ associated function in this implementation
[INFO] [stdout] 184 |         fn new() -> MockMessenger {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_waitlist` is never used
[INFO] [stdout]   --> src/lib.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |         pub fn add_to_waitlist() {}
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_at_restaurant` is never used
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn eat_at_restaurant() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/iflet_f.rs:28:30
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let coin = Coin::Quarter((UsState::Alabama));
[INFO] [stdout]    |                              ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 28 -     let coin = Coin::Quarter((UsState::Alabama));
[INFO] [stdout] 28 +     let coin = Coin::Quarter(UsState::Alabama);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Sum`
[INFO] [stdout]  --> src/trait_f.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::iter::Sum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::vec;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::garden::vegetables::Asparagus`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::garden::vegetables::Asparagus;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::struct_f::stfile`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use crate::struct_f::stfile;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::method_f::method_file`
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::method_f::method_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::enum_f::enum_file`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use crate::enum_f::enum_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::match_f::match_file`
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use crate::match_f::match_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::iflet_f::iflet_file`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::iflet_f::iflet_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::vector_f::vector_file`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use crate::vector_f::vector_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::string_f::string_file`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use crate::string_f::string_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash_map_f::hash_map_file`
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use crate::hash_map_f::hash_map_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::panic_f::painc_file`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use crate::panic_f::painc_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::trait_f::traint_file`
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use crate::trait_f::traint_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::life_time_f::life_time_file`
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use crate::life_time_f::life_time_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::closer_f::closer_file`
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | use crate::closer_f::closer_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::iterator_f::iterator_file`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use crate::iterator_f::iterator_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::smartpointer_f::smartpointer_file`
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use crate::smartpointer_f::smartpointer_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::thread_f::thread_file`
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use crate::thread_f::thread_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enum_f.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let four = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enum_f.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let six = IpAddrKind::V6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enum_f.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let home = IpAddrs{
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enum_f.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_kind`
[INFO] [stdout]   --> src/enum_f.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/match_f.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let a = value_in_cents(Coin::Quarter(UsState::Alabama));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_spaces`
[INFO] [stdout]   --> src/match_f.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn move_player(num_spaces: u8) {}
[INFO] [stdout]    |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/iflet_f.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut count = 0;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/iflet_f.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         count += 1;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vector_f.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut v4 = vec![1, 2, 3, 4, 5];
[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: `v`
[INFO] [stdout]  --> src/vector_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let v: Vec<i32> = Vec::new(); //optional. blank vector of i32 type
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/vector_f.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let v2 = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `does_not_exist`
[INFO] [stdout]   --> src/vector_f.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let does_not_exist = v3.get(100); // -> return None
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_does_not_exist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/vector_f.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let row = vec![
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v6`
[INFO] [stdout]   --> src/vector_f.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let v6 = vec![1, 2, 3, 4];
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_v6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/string_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let s = data.to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let s = "abc".to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s6`
[INFO] [stdout]   --> src/string_f.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let s6 = format!("{s4}-{s5}"); // format! does not take ownership of its parameters
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s7`
[INFO] [stdout]   --> src/string_f.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let s7 = &s2[0..4]; 
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s7`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_score`
[INFO] [stdout]   --> src/hash_map_f.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let team_score= scores.get(&team).unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_score`
[INFO] [stdout]   --> src/hash_map_f.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let team_score = scores.get(&team).copied().unwrap_or(0);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/panic_f.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let v = vec![1, 2, 3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file_result`
[INFO] [stdout]   --> src/panic_f.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let greeting_file_result = File::open("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file2`
[INFO] [stdout]   --> src/panic_f.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let greeting_file2 = match greeting_file_result2 {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let greeting_file = File::open("hello.txt").unwrap_or_else(|error| {
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let greeting_file = File::open("hello.txt")
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let greeting_file = File::open("hello.txt")
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]    --> src/panic_f.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let greeting_file = File::open("hello.txt")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/life_time_f.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/smartpointer_f.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let list = Cons(1, Box::new(Cons(2, Box::new(Cons(3, Box::new(Nil))))));
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/smartpointer_f.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let c = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> src/smartpointer_f.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let d = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/smartpointer_f.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let b = List2::Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/smartpointer_f.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let c = List2::Cons(4, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/smartpointer_f.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let b = List2::Cons(3, Rc::clone(&a));
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/smartpointer_f.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let c = List2::Cons(4, Rc::clone(&a));
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]   --> src/main.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 46 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `stfile` is never used
[INFO] [stdout]  --> src/struct_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn stfile() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]   --> src/struct_f.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn area(w: i32, h : i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area2` is never used
[INFO] [stdout]   --> src/struct_f.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn area2(dimensions: (u32, u32)) -> u32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/struct_f.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area3` is never used
[INFO] [stdout]   --> src/struct_f.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn area3(rectangle: &Rectangle) -> u32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/method_f.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `area` and `can_hold` are never used
[INFO] [stdout]   --> src/method_f.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Rectangle {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout]  8 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn can_hold(&self, other:&Rectangle ) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `method_file` is never used
[INFO] [stdout]   --> src/method_f.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn method_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enum_f.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/enum_f.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/enum_f.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/enum_f.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 20 |         fn call(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IpAddrs` is never constructed
[INFO] [stdout]   --> src/enum_f.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct IpAddrs {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enum_file` is never used
[INFO] [stdout]   --> src/enum_f.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn enum_file() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `route` is never used
[INFO] [stdout]   --> src/enum_f.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]  --> src/match_f.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/match_f.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]   --> src/match_f.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/match_f.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_file` is never used
[INFO] [stdout]   --> src/match_f.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn match_file() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]  --> src/iflet_f.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/iflet_f.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iflet_file` is never used
[INFO] [stdout]   --> src/iflet_f.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn iflet_file() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_file` is never used
[INFO] [stdout]  --> src/vector_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn vector_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_file` is never used
[INFO] [stdout]  --> src/string_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn string_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash_map_file` is never used
[INFO] [stdout]  --> src/hash_map_f.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hash_map_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `painc_file` is never used
[INFO] [stdout]  --> src/panic_f.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn painc_file() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/panic_f.rs:83:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |     impl Guess {
[INFO] [stdout]    |     ---------- associated items in this implementation
[INFO] [stdout] 83 |         pub fn new(value: i32) -> Guess {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |         pub fn value(&self) -> i32 {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file` is never used
[INFO] [stdout]   --> src/panic_f.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v2` is never used
[INFO] [stdout]    --> src/panic_f.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_username_from_file_v2() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v3` is never used
[INFO] [stdout]    --> src/panic_f.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn read_username_from_file_v3() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v4` is never used
[INFO] [stdout]    --> src/panic_f.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn read_username_from_file_v4() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/panic_f.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary` is never used
[INFO] [stdout]   --> src/trait_f.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Summary {
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NewsArticle` is never constructed
[INFO] [stdout]   --> src/trait_f.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct NewsArticle {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tweet` is never constructed
[INFO] [stdout]   --> src/trait_f.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Tweet {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traint_file` is never used
[INFO] [stdout]   --> src/trait_f.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn traint_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/trait_f.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify<T: Summary>(item: &T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarizable` is never used
[INFO] [stdout]    --> src/trait_f.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]    --> src/trait_f.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | struct Pair<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/trait_f.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 122 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 123 |     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/trait_f.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 128 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `life_time_file` is never used
[INFO] [stdout]  --> src/life_time_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn life_time_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]   --> src/life_time_f.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]   --> src/life_time_f.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn first_word(s: &str) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/life_time_f.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ShirtColor` is never used
[INFO] [stdout]  --> src/closer_f.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum ShirtColor {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Inventory` is never constructed
[INFO] [stdout]  --> src/closer_f.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Inventory {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `giveaway` and `most_stocked` are never used
[INFO] [stdout]   --> src/closer_f.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Inventory {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 14 |     fn giveaway(&self, user_preference: Option<ShirtColor>) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn most_stocked(&self) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/closer_f.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closer_file` is never used
[INFO] [stdout]   --> src/closer_f.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn closer_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterator_file` is never used
[INFO] [stdout]  --> src/iterator_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn iterator_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBox` is never constructed
[INFO] [stdout]  --> src/smartpointer_f.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct MyBox<T>(T);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/smartpointer_f.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl<T> MyBox<T> {
[INFO] [stdout]   | ---------------- associated function in this implementation
[INFO] [stdout] 8 |     fn new(x: T) -> MyBox<T> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn hello(name: &str) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | enum List {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomSmartPointer` is never constructed
[INFO] [stdout]   --> src/smartpointer_f.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct CustomSmartPointer {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List2` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | enum List2 {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List3` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:49:6
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum List3 {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/smartpointer_f.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `smartpointer_file` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn smartpointer_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `thread_file` is never used
[INFO] [stdout]  --> src/thread_f.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn thread_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141", 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=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `cmp::Ordering`
[INFO] [stdout]   --> src/lib.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 | use std::{cmp::Ordering, io};
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::*`
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | use std::collections::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/lib.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function1` is never used
[INFO] [stdout]   --> src/lib.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn function1() -> fmt::Result {
[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 `function2` is never used
[INFO] [stdout]   --> src/lib.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn function2() -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/lib.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> src/lib.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 71 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/lib.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 89 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]    --> src/lib.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 | struct Shoe {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoes_in_size` is never used
[INFO] [stdout]    --> src/lib.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MockMessenger` is never constructed
[INFO] [stdout]    --> src/lib.rs:179:12
[INFO] [stdout]     |
[INFO] [stdout] 179 |     struct MockMessenger {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:184:12
[INFO] [stdout]     |
[INFO] [stdout] 183 |     impl MockMessenger {
[INFO] [stdout]     |     ------------------ associated function in this implementation
[INFO] [stdout] 184 |         fn new() -> MockMessenger {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_waitlist` is never used
[INFO] [stdout]   --> src/lib.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |         pub fn add_to_waitlist() {}
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_at_restaurant` is never used
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn eat_at_restaurant() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/iflet_f.rs:28:30
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let coin = Coin::Quarter((UsState::Alabama));
[INFO] [stdout]    |                              ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 28 -     let coin = Coin::Quarter((UsState::Alabama));
[INFO] [stdout] 28 +     let coin = Coin::Quarter(UsState::Alabama);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Sum`
[INFO] [stdout]  --> src/trait_f.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::iter::Sum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::vec;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::garden::vegetables::Asparagus`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::garden::vegetables::Asparagus;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::struct_f::stfile`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use crate::struct_f::stfile;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::method_f::method_file`
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::method_f::method_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::enum_f::enum_file`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use crate::enum_f::enum_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::match_f::match_file`
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use crate::match_f::match_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::iflet_f::iflet_file`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::iflet_f::iflet_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::vector_f::vector_file`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use crate::vector_f::vector_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::string_f::string_file`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use crate::string_f::string_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash_map_f::hash_map_file`
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use crate::hash_map_f::hash_map_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::panic_f::painc_file`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use crate::panic_f::painc_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::trait_f::traint_file`
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use crate::trait_f::traint_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::life_time_f::life_time_file`
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use crate::life_time_f::life_time_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::closer_f::closer_file`
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | use crate::closer_f::closer_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::iterator_f::iterator_file`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use crate::iterator_f::iterator_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::smartpointer_f::smartpointer_file`
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use crate::smartpointer_f::smartpointer_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::thread_f::thread_file`
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use crate::thread_f::thread_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enum_f.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let four = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enum_f.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let six = IpAddrKind::V6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enum_f.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let home = IpAddrs{
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enum_f.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_kind`
[INFO] [stdout]   --> src/enum_f.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/match_f.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let a = value_in_cents(Coin::Quarter(UsState::Alabama));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_spaces`
[INFO] [stdout]   --> src/match_f.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn move_player(num_spaces: u8) {}
[INFO] [stdout]    |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/iflet_f.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut count = 0;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/iflet_f.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         count += 1;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vector_f.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut v4 = vec![1, 2, 3, 4, 5];
[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: `v`
[INFO] [stdout]  --> src/vector_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let v: Vec<i32> = Vec::new(); //optional. blank vector of i32 type
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/vector_f.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let v2 = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `does_not_exist`
[INFO] [stdout]   --> src/vector_f.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let does_not_exist = v3.get(100); // -> return None
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_does_not_exist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/vector_f.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let row = vec![
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v6`
[INFO] [stdout]   --> src/vector_f.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let v6 = vec![1, 2, 3, 4];
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_v6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/string_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let s = data.to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let s = "abc".to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s6`
[INFO] [stdout]   --> src/string_f.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let s6 = format!("{s4}-{s5}"); // format! does not take ownership of its parameters
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s7`
[INFO] [stdout]   --> src/string_f.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let s7 = &s2[0..4]; 
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s7`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_score`
[INFO] [stdout]   --> src/hash_map_f.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let team_score= scores.get(&team).unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_score`
[INFO] [stdout]   --> src/hash_map_f.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let team_score = scores.get(&team).copied().unwrap_or(0);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/panic_f.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let v = vec![1, 2, 3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file_result`
[INFO] [stdout]   --> src/panic_f.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let greeting_file_result = File::open("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file2`
[INFO] [stdout]   --> src/panic_f.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let greeting_file2 = match greeting_file_result2 {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let greeting_file = File::open("hello.txt").unwrap_or_else(|error| {
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let greeting_file = File::open("hello.txt")
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let greeting_file = File::open("hello.txt")
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]    --> src/panic_f.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let greeting_file = File::open("hello.txt")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/life_time_f.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/smartpointer_f.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let list = Cons(1, Box::new(Cons(2, Box::new(Cons(3, Box::new(Nil))))));
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/smartpointer_f.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let c = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> src/smartpointer_f.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let d = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/smartpointer_f.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let b = List2::Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/smartpointer_f.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let c = List2::Cons(4, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/smartpointer_f.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let b = List2::Cons(3, Rc::clone(&a));
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/smartpointer_f.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let c = List2::Cons(4, Rc::clone(&a));
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]   --> src/main.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 46 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `stfile` is never used
[INFO] [stdout]  --> src/struct_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn stfile() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]   --> src/struct_f.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn area(w: i32, h : i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area2` is never used
[INFO] [stdout]   --> src/struct_f.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn area2(dimensions: (u32, u32)) -> u32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/struct_f.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area3` is never used
[INFO] [stdout]   --> src/struct_f.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn area3(rectangle: &Rectangle) -> u32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/method_f.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `area` and `can_hold` are never used
[INFO] [stdout]   --> src/method_f.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Rectangle {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout]  8 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn can_hold(&self, other:&Rectangle ) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `method_file` is never used
[INFO] [stdout]   --> src/method_f.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn method_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enum_f.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/enum_f.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/enum_f.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/enum_f.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 20 |         fn call(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IpAddrs` is never constructed
[INFO] [stdout]   --> src/enum_f.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct IpAddrs {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enum_file` is never used
[INFO] [stdout]   --> src/enum_f.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn enum_file() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `route` is never used
[INFO] [stdout]   --> src/enum_f.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]  --> src/match_f.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/match_f.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]   --> src/match_f.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/match_f.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_file` is never used
[INFO] [stdout]   --> src/match_f.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn match_file() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]  --> src/iflet_f.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/iflet_f.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iflet_file` is never used
[INFO] [stdout]   --> src/iflet_f.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn iflet_file() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_file` is never used
[INFO] [stdout]  --> src/vector_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn vector_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_file` is never used
[INFO] [stdout]  --> src/string_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn string_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash_map_file` is never used
[INFO] [stdout]  --> src/hash_map_f.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hash_map_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `painc_file` is never used
[INFO] [stdout]  --> src/panic_f.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn painc_file() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/panic_f.rs:83:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |     impl Guess {
[INFO] [stdout]    |     ---------- associated items in this implementation
[INFO] [stdout] 83 |         pub fn new(value: i32) -> Guess {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |         pub fn value(&self) -> i32 {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file` is never used
[INFO] [stdout]   --> src/panic_f.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v2` is never used
[INFO] [stdout]    --> src/panic_f.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_username_from_file_v2() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v3` is never used
[INFO] [stdout]    --> src/panic_f.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn read_username_from_file_v3() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v4` is never used
[INFO] [stdout]    --> src/panic_f.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn read_username_from_file_v4() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/panic_f.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary` is never used
[INFO] [stdout]   --> src/trait_f.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Summary {
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NewsArticle` is never constructed
[INFO] [stdout]   --> src/trait_f.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct NewsArticle {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tweet` is never constructed
[INFO] [stdout]   --> src/trait_f.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Tweet {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traint_file` is never used
[INFO] [stdout]   --> src/trait_f.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn traint_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/trait_f.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify<T: Summary>(item: &T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarizable` is never used
[INFO] [stdout]    --> src/trait_f.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]    --> src/trait_f.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | struct Pair<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/trait_f.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 122 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 123 |     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/trait_f.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 128 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `life_time_file` is never used
[INFO] [stdout]  --> src/life_time_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn life_time_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]   --> src/life_time_f.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]   --> src/life_time_f.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn first_word(s: &str) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/life_time_f.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ShirtColor` is never used
[INFO] [stdout]  --> src/closer_f.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum ShirtColor {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Inventory` is never constructed
[INFO] [stdout]  --> src/closer_f.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Inventory {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `giveaway` and `most_stocked` are never used
[INFO] [stdout]   --> src/closer_f.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Inventory {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 14 |     fn giveaway(&self, user_preference: Option<ShirtColor>) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn most_stocked(&self) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/closer_f.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closer_file` is never used
[INFO] [stdout]   --> src/closer_f.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn closer_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterator_file` is never used
[INFO] [stdout]  --> src/iterator_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn iterator_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBox` is never constructed
[INFO] [stdout]  --> src/smartpointer_f.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct MyBox<T>(T);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/smartpointer_f.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl<T> MyBox<T> {
[INFO] [stdout]   | ---------------- associated function in this implementation
[INFO] [stdout] 8 |     fn new(x: T) -> MyBox<T> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn hello(name: &str) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | enum List {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomSmartPointer` is never constructed
[INFO] [stdout]   --> src/smartpointer_f.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct CustomSmartPointer {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List2` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | enum List2 {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List3` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:49:6
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum List3 {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/smartpointer_f.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `smartpointer_file` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn smartpointer_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `thread_file` is never used
[INFO] [stdout]  --> src/thread_f.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn thread_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp::Ordering`
[INFO] [stdout]   --> src/lib.rs:49:11
[INFO] [stdout]    |
[INFO] [stdout] 49 | use std::{cmp::Ordering, io};
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::*`
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | use std::collections::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/lib.rs:84:17
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn greeting(name: &str) -> String {
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function1` is never used
[INFO] [stdout]   --> src/lib.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn function1() -> fmt::Result {
[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 `function2` is never used
[INFO] [stdout]   --> src/lib.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn function2() -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> src/lib.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub struct Guess {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 89 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_waitlist` is never used
[INFO] [stdout]   --> src/lib.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |         pub fn add_to_waitlist() {}
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_at_restaurant` is never used
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn eat_at_restaurant() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/iflet_f.rs:28:30
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let coin = Coin::Quarter((UsState::Alabama));
[INFO] [stdout]    |                              ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 28 -     let coin = Coin::Quarter((UsState::Alabama));
[INFO] [stdout] 28 +     let coin = Coin::Quarter(UsState::Alabama);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Sum`
[INFO] [stdout]  --> src/trait_f.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::iter::Sum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::vec;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::garden::vegetables::Asparagus`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use crate::garden::vegetables::Asparagus;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::struct_f::stfile`
[INFO] [stdout]   --> src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use crate::struct_f::stfile;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::method_f::method_file`
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::method_f::method_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::enum_f::enum_file`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use crate::enum_f::enum_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::match_f::match_file`
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use crate::match_f::match_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::iflet_f::iflet_file`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::iflet_f::iflet_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::vector_f::vector_file`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use crate::vector_f::vector_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::string_f::string_file`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use crate::string_f::string_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash_map_f::hash_map_file`
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | use crate::hash_map_f::hash_map_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::panic_f::painc_file`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use crate::panic_f::painc_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::trait_f::traint_file`
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use crate::trait_f::traint_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::life_time_f::life_time_file`
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use crate::life_time_f::life_time_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::closer_f::closer_file`
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | use crate::closer_f::closer_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::iterator_f::iterator_file`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use crate::iterator_f::iterator_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::smartpointer_f::smartpointer_file`
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use crate::smartpointer_f::smartpointer_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::thread_f::thread_file`
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use crate::thread_f::thread_file;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `four`
[INFO] [stdout]   --> src/enum_f.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let four = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/enum_f.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let six = IpAddrKind::V6;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enum_f.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let home = IpAddrs{
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/enum_f.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_kind`
[INFO] [stdout]   --> src/enum_f.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/match_f.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let a = value_in_cents(Coin::Quarter(UsState::Alabama));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_spaces`
[INFO] [stdout]   --> src/match_f.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn move_player(num_spaces: u8) {}
[INFO] [stdout]    |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/iflet_f.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut count = 0;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/iflet_f.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         count += 1;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/vector_f.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut v4 = vec![1, 2, 3, 4, 5];
[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: `v`
[INFO] [stdout]  --> src/vector_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let v: Vec<i32> = Vec::new(); //optional. blank vector of i32 type
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]   --> src/vector_f.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let v2 = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `does_not_exist`
[INFO] [stdout]   --> src/vector_f.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let does_not_exist = v3.get(100); // -> return None
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_does_not_exist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]   --> src/vector_f.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let row = vec![
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v6`
[INFO] [stdout]   --> src/vector_f.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let v6 = vec![1, 2, 3, 4];
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_v6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/string_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = String::new();
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let s = data.to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/string_f.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let s = "abc".to_string();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s6`
[INFO] [stdout]   --> src/string_f.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let s6 = format!("{s4}-{s5}"); // format! does not take ownership of its parameters
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s7`
[INFO] [stdout]   --> src/string_f.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let s7 = &s2[0..4]; 
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s7`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_score`
[INFO] [stdout]   --> src/hash_map_f.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let team_score= scores.get(&team).unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `team_score`
[INFO] [stdout]   --> src/hash_map_f.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let team_score = scores.get(&team).copied().unwrap_or(0);
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/panic_f.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let v = vec![1, 2, 3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file_result`
[INFO] [stdout]   --> src/panic_f.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let greeting_file_result = File::open("hello.txt");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file2`
[INFO] [stdout]   --> src/panic_f.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let greeting_file2 = match greeting_file_result2 {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let greeting_file = File::open("hello.txt").unwrap_or_else(|error| {
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let greeting_file = File::open("hello.txt")
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/panic_f.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let greeting_file = File::open("hello.txt")
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]    --> src/panic_f.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     let greeting_file = File::open("hello.txt")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/life_time_f.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> src/smartpointer_f.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let list = Cons(1, Box::new(Cons(2, Box::new(Cons(3, Box::new(Nil))))));
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/smartpointer_f.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let c = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> src/smartpointer_f.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let d = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/smartpointer_f.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let b = List2::Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/smartpointer_f.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let c = List2::Cons(4, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/smartpointer_f.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let b = List2::Cons(3, Rc::clone(&a));
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/smartpointer_f.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let c = List2::Cons(4, Rc::clone(&a));
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]   --> src/main.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl Rectangle {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 46 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `stfile` is never used
[INFO] [stdout]  --> src/struct_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn stfile() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area` is never used
[INFO] [stdout]   --> src/struct_f.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn area(w: i32, h : i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area2` is never used
[INFO] [stdout]   --> src/struct_f.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn area2(dimensions: (u32, u32)) -> u32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/struct_f.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `area3` is never used
[INFO] [stdout]   --> src/struct_f.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn area3(rectangle: &Rectangle) -> u32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/method_f.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `area` and `can_hold` are never used
[INFO] [stdout]   --> src/method_f.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Rectangle {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout]  8 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn can_hold(&self, other:&Rectangle ) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `method_file` is never used
[INFO] [stdout]   --> src/method_f.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn method_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enum_f.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddr` is never used
[INFO] [stdout]  --> src/enum_f.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum IpAddr {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]   --> src/enum_f.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Message {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/enum_f.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 20 |         fn call(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IpAddrs` is never constructed
[INFO] [stdout]   --> src/enum_f.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct IpAddrs {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enum_file` is never used
[INFO] [stdout]   --> src/enum_f.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn enum_file() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `route` is never used
[INFO] [stdout]   --> src/enum_f.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]  --> src/match_f.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/match_f.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]   --> src/match_f.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/match_f.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_file` is never used
[INFO] [stdout]   --> src/match_f.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn match_file() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UsState` is never used
[INFO] [stdout]  --> src/iflet_f.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/iflet_f.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iflet_file` is never used
[INFO] [stdout]   --> src/iflet_f.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn iflet_file() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `vector_file` is never used
[INFO] [stdout]  --> src/vector_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn vector_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_file` is never used
[INFO] [stdout]  --> src/string_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn string_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash_map_file` is never used
[INFO] [stdout]  --> src/hash_map_f.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn hash_map_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `painc_file` is never used
[INFO] [stdout]  --> src/panic_f.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn painc_file() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/panic_f.rs:83:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |     impl Guess {
[INFO] [stdout]    |     ---------- associated items in this implementation
[INFO] [stdout] 83 |         pub fn new(value: i32) -> Guess {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |         pub fn value(&self) -> i32 {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file` is never used
[INFO] [stdout]   --> src/panic_f.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v2` is never used
[INFO] [stdout]    --> src/panic_f.rs:116:4
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_username_from_file_v2() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v3` is never used
[INFO] [stdout]    --> src/panic_f.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn read_username_from_file_v3() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file_v4` is never used
[INFO] [stdout]    --> src/panic_f.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn read_username_from_file_v4() -> Result<String, io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/panic_f.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary` is never used
[INFO] [stdout]   --> src/trait_f.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Summary {
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NewsArticle` is never constructed
[INFO] [stdout]   --> src/trait_f.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct NewsArticle {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tweet` is never constructed
[INFO] [stdout]   --> src/trait_f.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Tweet {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traint_file` is never used
[INFO] [stdout]   --> src/trait_f.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn traint_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/trait_f.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn notify<T: Summary>(item: &T) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarizable` is never used
[INFO] [stdout]    --> src/trait_f.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn returns_summarizable() -> impl Summary {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]    --> src/trait_f.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | struct Pair<T> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/trait_f.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 122 | impl<T> Pair<T> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 123 |     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/trait_f.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 128 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stdout]     | ------------------------------------- method in this implementation
[INFO] [stdout] 129 |     fn cmp_display(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `life_time_file` is never used
[INFO] [stdout]  --> src/life_time_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn life_time_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]   --> src/life_time_f.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]   --> src/life_time_f.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn first_word(s: &str) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/life_time_f.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ShirtColor` is never used
[INFO] [stdout]  --> src/closer_f.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum ShirtColor {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Inventory` is never constructed
[INFO] [stdout]  --> src/closer_f.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Inventory {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `giveaway` and `most_stocked` are never used
[INFO] [stdout]   --> src/closer_f.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Inventory {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 14 |     fn giveaway(&self, user_preference: Option<ShirtColor>) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn most_stocked(&self) -> ShirtColor {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/closer_f.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closer_file` is never used
[INFO] [stdout]   --> src/closer_f.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn closer_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterator_file` is never used
[INFO] [stdout]  --> src/iterator_f.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn iterator_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBox` is never constructed
[INFO] [stdout]  --> src/smartpointer_f.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct MyBox<T>(T);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/smartpointer_f.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl<T> MyBox<T> {
[INFO] [stdout]   | ---------------- associated function in this implementation
[INFO] [stdout] 8 |     fn new(x: T) -> MyBox<T> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hello` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn hello(name: &str) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | enum List {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CustomSmartPointer` is never constructed
[INFO] [stdout]   --> src/smartpointer_f.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct CustomSmartPointer {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List2` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | enum List2 {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List3` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:49:6
[INFO] [stdout]    |
[INFO] [stdout] 49 | enum List3 {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/smartpointer_f.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `smartpointer_file` is never used
[INFO] [stdout]   --> src/smartpointer_f.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn smartpointer_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `thread_file` is never used
[INFO] [stdout]  --> src/thread_f.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn thread_file() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141", 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=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `cmp::Ordering`
[INFO] [stdout] 
[INFO] [stderr]   --> src/lib.rs:49:11
[INFO] [stdout] running 18 tests
[INFO] [stderr]    |
[INFO] [stdout] test tests::add_three_and_two ... ok
[INFO] [stderr] 49 | use std::{cmp::Ordering, io};
[INFO] [stdout] test tests::add_two_and_two ... ok
[INFO] [stderr]    |           ^^^^^^^^^^^^^
[INFO] [stdout] test tests::exploration ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tests::filters_by_size ... ok
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::iterator_demonstration ... ok
[INFO] [stderr] warning: unused import: `std::collections::*`
[INFO] [stdout] test tests::larger_can_hold_smaller ... ok
[INFO] [stderr]   --> src/lib.rs:53:5
[INFO] [stdout] test tests::one_hundred ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tests::it_adds_two ... ok
[INFO] [stderr] 53 | use std::collections::*;
[INFO] [stdout] test tests::this_test_will_pass ... ok
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test tests::it_sends_an_over_75_percent_warning_message ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::smaller_cannot_hold_larger ... ok
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stdout] test tests::it_works2 ... ok
[INFO] [stderr]   --> src/lib.rs:84:17
[INFO] [stdout] test tests::iterator_sum ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tests::another ... FAILED
[INFO] [stderr] 84 | pub fn greeting(name: &str) -> String {
[INFO] [stdout] test tests::greater_than_100 - should panic ... ok
[INFO] [stderr]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] test tests::greeting_contains_name ... FAILED
[INFO] [stderr]    |
[INFO] [stdout] test tests::this_test_will_fail ... FAILED
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] failures:
[INFO] [stderr] warning: function `function1` is never used
[INFO] [stdout] 
[INFO] [stderr]   --> src/lib.rs:34:4
[INFO] [stdout] ---- tests::another stdout ----
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 34 | fn function1() -> fmt::Result {
[INFO] [stdout] thread 'tests::another' (291) panicked at src/lib.rs:210:9:
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stdout] Make this test fail
[INFO] [stderr]    |
[INFO] [stdout] stack backtrace:
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    0:     0x59ea410c0028 - std[10d71ac2c42b111e]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr] warning: function `function2` is never used
[INFO] [stdout]    1:     0x59ea410c0028 - std[10d71ac2c42b111e]::backtrace_rs::backtrace::trace_unsynchronized::<std[10d71ac2c42b111e]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]   --> src/lib.rs:39:4
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]    |
[INFO] [stdout]    2:     0x59ea410c0028 - std[10d71ac2c42b111e]::sys::backtrace::_print_fmt
[INFO] [stderr] 39 | fn function2() -> io::Result<()> {
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stdout]    3:     0x59ea410c0028 - <<std[10d71ac2c42b111e]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[8fb95b77d25ab6c8]::fmt::Display>::fmt
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stdout]    4:     0x59ea410d3e5a - <core[8fb95b77d25ab6c8]::fmt::rt::Argument>::fmt
[INFO] [stderr]   --> src/lib.rs:65:8
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]    |
[INFO] [stdout]    5:     0x59ea410d3e5a - core[8fb95b77d25ab6c8]::fmt::write
[INFO] [stderr] 65 | struct Rectangle {
[INFO] [stdout]    6:     0x59ea410c4842 - std[10d71ac2c42b111e]::io::default_write_fmt::<alloc[a7ee25936407c584]::vec::Vec<u8>>
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:622:11
[INFO] [stderr] 
[INFO] [stdout]    7:     0x59ea410c4842 - <alloc[a7ee25936407c584]::vec::Vec<u8> as std[10d71ac2c42b111e]::io::Write>::write_fmt
[INFO] [stderr] warning: method `can_hold` is never used
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:1977:13
[INFO] [stderr]   --> src/lib.rs:71:8
[INFO] [stdout]    8:     0x59ea4109f186 - <std[10d71ac2c42b111e]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr] 70 | impl Rectangle {
[INFO] [stdout]    9:     0x59ea4109f186 - std[10d71ac2c42b111e]::panicking::default_hook::{closure#0}
[INFO] [stderr]    | -------------- method in this implementation
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:292:27
[INFO] [stderr] 71 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]   10:     0x59ea410b8519 - std[10d71ac2c42b111e]::panicking::default_hook
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:316:9
[INFO] [stderr] 
[INFO] [stdout]   11:     0x59ea410545cc - <alloc[a7ee25936407c584]::boxed::Box<dyn for<'a, 'b> core[8fb95b77d25ab6c8]::ops::function::Fn<(&'a std[10d71ac2c42b111e]::panic::PanicHookInfo<'b>,), Output = ()> + core[8fb95b77d25ab6c8]::marker::Sync + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::Fn<(&std[10d71ac2c42b111e]::panic::PanicHookInfo,)>>::call
[INFO] [stderr] warning: field `value` is never read
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2289:9
[INFO] [stderr]   --> src/lib.rs:89:5
[INFO] [stdout]   12:     0x59ea410545cc - test[213991da798b1c03]::test_main_inner::<test[213991da798b1c03]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:155:21
[INFO] [stderr] 88 | pub struct Guess {
[INFO] [stdout]   13:     0x59ea410b86d2 - <alloc[a7ee25936407c584]::boxed::Box<dyn for<'a, 'b> core[8fb95b77d25ab6c8]::ops::function::Fn<(&'a std[10d71ac2c42b111e]::panic::PanicHookInfo<'b>,), Output = ()> + core[8fb95b77d25ab6c8]::marker::Sync + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::Fn<(&std[10d71ac2c42b111e]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2289:9
[INFO] [stderr] 89 |     value: i32,
[INFO] [stdout]   14:     0x59ea410b86d2 - std[10d71ac2c42b111e]::panicking::panic_with_hook
[INFO] [stderr]    |     ^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:833:13
[INFO] [stderr] 
[INFO] [stdout]   15:     0x59ea4109f274 - std[10d71ac2c42b111e]::panicking::panic_handler::{closure#0}
[INFO] [stderr] warning: struct `Shoe` is never constructed
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:691:13
[INFO] [stderr]    --> src/lib.rs:129:8
[INFO] [stdout]   16:     0x59ea41094449 - std[10d71ac2c42b111e]::sys::backtrace::__rust_end_short_backtrace::<std[10d71ac2c42b111e]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]     |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr] 129 | struct Shoe {
[INFO] [stdout]   17:     0x59ea4109ff5d - __rustc[3be9ba60078d4c86]::rust_begin_unwind
[INFO] [stderr]     |        ^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:689:5
[INFO] [stderr] 
[INFO] [stdout]   18:     0x59ea410d45dc - core[8fb95b77d25ab6c8]::panicking::panic_fmt
[INFO] [stderr] warning: function `shoes_in_size` is never used
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panicking.rs:80:14
[INFO] [stderr]    --> src/lib.rs:134:4
[INFO] [stdout]   19:     0x59ea41043215 - hello_cargo[d891df52e3c786f1]::tests::another
[INFO] [stderr]     |
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:210:9
[INFO] [stderr] 134 | fn shoes_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]   20:     0x59ea410405c7 - hello_cargo[d891df52e3c786f1]::tests::another::{closure#0}
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:209:17
[INFO] [stderr] 
[INFO] [stdout]   21:     0x59ea41047476 - <hello_cargo[d891df52e3c786f1]::tests::another::{closure#0} as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr] warning: struct `MockMessenger` is never constructed
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr]    --> src/lib.rs:179:12
[INFO] [stdout]   22:     0x59ea410476ab - <fn() -> core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr] 179 |     struct MockMessenger {
[INFO] [stdout]   23:     0x59ea410476ab - test[213991da798b1c03]::__rust_begin_short_backtrace::<core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>, fn() -> core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:724:18
[INFO] [stderr] 
[INFO] [stdout]   24:     0x59ea41054f25 - test[213991da798b1c03]::run_test_in_process::{closure#0}
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:747:74
[INFO] [stderr]    --> src/lib.rs:184:12
[INFO] [stdout]   25:     0x59ea41054f25 - <core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stderr] 183 |     impl MockMessenger {
[INFO] [stdout]   26:     0x59ea41054f25 - std[10d71ac2c42b111e]::panicking::catch_unwind::do_call::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>, core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr]     |     ------------------ associated function in this implementation
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:581:40
[INFO] [stderr] 184 |         fn new() -> MockMessenger {
[INFO] [stdout]   27:     0x59ea41054f25 - std[10d71ac2c42b111e]::panicking::catch_unwind::<core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>, core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>>
[INFO] [stderr]     |            ^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:544:19
[INFO] [stderr] 
[INFO] [stdout]   28:     0x59ea41054f25 - std[10d71ac2c42b111e]::panic::catch_unwind::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>, core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr] warning: function `add_to_waitlist` is never used
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panic.rs:359:14
[INFO] [stderr]   --> src/lib.rs:14:16
[INFO] [stdout]   29:     0x59ea41054f25 - test[213991da798b1c03]::run_test_in_process
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:747:27
[INFO] [stderr] 14 |         pub fn add_to_waitlist() {}
[INFO] [stdout]   30:     0x59ea41054f25 - test[213991da798b1c03]::run_test::{closure#0}
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:668:43
[INFO] [stderr] 
[INFO] [stdout]   31:     0x59ea4104e834 - test[213991da798b1c03]::run_test::{closure#1}
[INFO] [stderr] warning: function `eat_at_restaurant` is never used
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:698:41
[INFO] [stderr]   --> src/lib.rs:19:12
[INFO] [stdout]   32:     0x59ea4104e834 - std[10d71ac2c42b111e]::sys::backtrace::__rust_begin_short_backtrace::<test[213991da798b1c03]::run_test::{closure#1}, ()>
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:166:18
[INFO] [stderr] 19 |     pub fn eat_at_restaurant() {
[INFO] [stdout]   33:     0x59ea41057fa2 - std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked::<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stderr] 
[INFO] [stdout]   34:     0x59ea41057fa2 - <core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr] warning: `hello_cargo` (lib) generated 14 warnings (run `cargo fix --lib -p hello_cargo` to apply 3 suggestions)
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stdout]   35:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panicking::catch_unwind::do_call::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]   --> src/iflet_f.rs:28:30
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:581:40
[INFO] [stderr]    |
[INFO] [stdout]   36:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panicking::catch_unwind::<(), core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stderr] 28 |     let coin = Coin::Quarter((UsState::Alabama));
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:544:19
[INFO] [stderr]    |                              ^                ^
[INFO] [stdout]   37:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panic::catch_unwind::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panic.rs:359:14
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]   38:     0x59ea41057fa2 - std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked::<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stderr] help: remove these parentheses
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stderr]    |
[INFO] [stdout]   39:     0x59ea41057fa2 - <std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1} as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr] 28 -     let coin = Coin::Quarter((UsState::Alabama));
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr] 28 +     let coin = Coin::Quarter(UsState::Alabama);
[INFO] [stdout]   40:     0x59ea410bf98f - <alloc[a7ee25936407c584]::boxed::Box<dyn core[8fb95b77d25ab6c8]::ops::function::FnOnce<(), Output = ()> + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2275:9
[INFO] [stderr] 
[INFO] [stdout]   41:     0x59ea410bf98f - <std[10d71ac2c42b111e]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr] warning: unused import: `std::iter::Sum`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stderr]  --> src/trait_f.rs:7:5
[INFO] [stdout]   42:     0x7e98f2154aa4 - <unknown>
[INFO] [stderr]   |
[INFO] [stdout]   43:     0x7e98f21e1a64 - clone
[INFO] [stderr] 7 | use std::iter::Sum;
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] ---- tests::greeting_contains_name stdout ----
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] thread 'tests::greeting_contains_name' (295) panicked at src/lib.rs:249:9:
[INFO] [stderr] warning: unused import: `std::vec`
[INFO] [stdout] Greeting did not contain name, value was `Hello!`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stdout] stack backtrace:
[INFO] [stderr]    |
[INFO] [stdout]    0:     0x59ea410c0028 - std[10d71ac2c42b111e]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr] 19 | use std::vec;
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stdout]    1:     0x59ea410c0028 - std[10d71ac2c42b111e]::backtrace_rs::backtrace::trace_unsynchronized::<std[10d71ac2c42b111e]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr] warning: unused import: `crate::garden::vegetables::Asparagus`
[INFO] [stdout]    2:     0x59ea410c0028 - std[10d71ac2c42b111e]::sys::backtrace::_print_fmt
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]    |
[INFO] [stdout]    3:     0x59ea410c0028 - <<std[10d71ac2c42b111e]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[8fb95b77d25ab6c8]::fmt::Display>::fmt
[INFO] [stderr] 21 | use crate::garden::vegetables::Asparagus;
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    4:     0x59ea410d3e5a - <core[8fb95b77d25ab6c8]::fmt::rt::Argument>::fmt
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr] warning: unused import: `crate::struct_f::stfile`
[INFO] [stdout]    5:     0x59ea410d3e5a - core[8fb95b77d25ab6c8]::fmt::write
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stdout]    6:     0x59ea410c4842 - std[10d71ac2c42b111e]::io::default_write_fmt::<alloc[a7ee25936407c584]::vec::Vec<u8>>
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:622:11
[INFO] [stderr] 22 | use crate::struct_f::stfile;
[INFO] [stdout]    7:     0x59ea410c4842 - <alloc[a7ee25936407c584]::vec::Vec<u8> as std[10d71ac2c42b111e]::io::Write>::write_fmt
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:1977:13
[INFO] [stderr] 
[INFO] [stdout]    8:     0x59ea4109f186 - <std[10d71ac2c42b111e]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr] warning: unused import: `crate::method_f::method_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stdout]    9:     0x59ea4109f186 - std[10d71ac2c42b111e]::panicking::default_hook::{closure#0}
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:292:27
[INFO] [stderr] 23 | use crate::method_f::method_file;
[INFO] [stdout]   10:     0x59ea410b8519 - std[10d71ac2c42b111e]::panicking::default_hook
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:316:9
[INFO] [stderr] 
[INFO] [stdout]   11:     0x59ea410545cc - <alloc[a7ee25936407c584]::boxed::Box<dyn for<'a, 'b> core[8fb95b77d25ab6c8]::ops::function::Fn<(&'a std[10d71ac2c42b111e]::panic::PanicHookInfo<'b>,), Output = ()> + core[8fb95b77d25ab6c8]::marker::Sync + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::Fn<(&std[10d71ac2c42b111e]::panic::PanicHookInfo,)>>::call
[INFO] [stderr] warning: unused import: `crate::enum_f::enum_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2289:9
[INFO] [stderr]   --> src/main.rs:24:5
[INFO] [stdout]   12:     0x59ea410545cc - test[213991da798b1c03]::test_main_inner::<test[213991da798b1c03]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:155:21
[INFO] [stderr] 24 | use crate::enum_f::enum_file;
[INFO] [stdout]   13:     0x59ea410b86d2 - <alloc[a7ee25936407c584]::boxed::Box<dyn for<'a, 'b> core[8fb95b77d25ab6c8]::ops::function::Fn<(&'a std[10d71ac2c42b111e]::panic::PanicHookInfo<'b>,), Output = ()> + core[8fb95b77d25ab6c8]::marker::Sync + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::Fn<(&std[10d71ac2c42b111e]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2289:9
[INFO] [stderr] 
[INFO] [stdout]   14:     0x59ea410b86d2 - std[10d71ac2c42b111e]::panicking::panic_with_hook
[INFO] [stderr] warning: unused import: `crate::match_f::match_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:833:13
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stdout]   15:     0x59ea4109f242 - std[10d71ac2c42b111e]::panicking::panic_handler::{closure#0}
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:698:13
[INFO] [stderr] 25 | use crate::match_f::match_file;
[INFO] [stdout]   16:     0x59ea41094449 - std[10d71ac2c42b111e]::sys::backtrace::__rust_end_short_backtrace::<std[10d71ac2c42b111e]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr] 
[INFO] [stdout]   17:     0x59ea4109ff5d - __rustc[3be9ba60078d4c86]::rust_begin_unwind
[INFO] [stderr] warning: unused import: `crate::iflet_f::iflet_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:689:5
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stdout]   18:     0x59ea410d45dc - core[8fb95b77d25ab6c8]::panicking::panic_fmt
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panicking.rs:80:14
[INFO] [stderr] 26 | use crate::iflet_f::iflet_file;
[INFO] [stdout]   19:     0x59ea41042bce - hello_cargo[d891df52e3c786f1]::tests::greeting_contains_name
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:249:9
[INFO] [stderr] 
[INFO] [stdout]   20:     0x59ea410404d7 - hello_cargo[d891df52e3c786f1]::tests::greeting_contains_name::{closure#0}
[INFO] [stderr] warning: unused import: `crate::vector_f::vector_file`
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:247:32
[INFO] [stderr]   --> src/main.rs:27:5
[INFO] [stdout]   21:     0x59ea41047336 - <hello_cargo[d891df52e3c786f1]::tests::greeting_contains_name::{closure#0} as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr] 27 | use crate::vector_f::vector_file;
[INFO] [stdout]   22:     0x59ea410476ab - <fn() -> core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr] 
[INFO] [stdout]   23:     0x59ea410476ab - test[213991da798b1c03]::__rust_begin_short_backtrace::<core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>, fn() -> core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr] warning: unused import: `crate::string_f::string_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:724:18
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stdout]   24:     0x59ea41054f25 - test[213991da798b1c03]::run_test_in_process::{closure#0}
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:747:74
[INFO] [stderr] 28 | use crate::string_f::string_file;
[INFO] [stdout]   25:     0x59ea41054f25 - <core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stderr] 
[INFO] [stdout]   26:     0x59ea41054f25 - std[10d71ac2c42b111e]::panicking::catch_unwind::do_call::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>, core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr] warning: unused import: `crate::hash_map_f::hash_map_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:581:40
[INFO] [stderr]   --> src/main.rs:29:5
[INFO] [stdout]   27:     0x59ea41054f25 - std[10d71ac2c42b111e]::panicking::catch_unwind::<core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>, core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>>
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:544:19
[INFO] [stderr] 29 | use crate::hash_map_f::hash_map_file;
[INFO] [stdout]   28:     0x59ea41054f25 - std[10d71ac2c42b111e]::panic::catch_unwind::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>, core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panic.rs:359:14
[INFO] [stderr] 
[INFO] [stdout]   29:     0x59ea41054f25 - test[213991da798b1c03]::run_test_in_process
[INFO] [stderr] warning: unused import: `crate::panic_f::painc_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:747:27
[INFO] [stderr]   --> src/main.rs:30:5
[INFO] [stdout]   30:     0x59ea41054f25 - test[213991da798b1c03]::run_test::{closure#0}
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:668:43
[INFO] [stderr] 30 | use crate::panic_f::painc_file;
[INFO] [stdout]   31:     0x59ea4104e834 - test[213991da798b1c03]::run_test::{closure#1}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:698:41
[INFO] [stderr] 
[INFO] [stdout]   32:     0x59ea4104e834 - std[10d71ac2c42b111e]::sys::backtrace::__rust_begin_short_backtrace::<test[213991da798b1c03]::run_test::{closure#1}, ()>
[INFO] [stderr] warning: unused import: `crate::trait_f::traint_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:166:18
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stdout]   33:     0x59ea41057fa2 - std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked::<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stderr] 31 | use crate::trait_f::traint_file;
[INFO] [stdout]   34:     0x59ea41057fa2 - <core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stderr] 
[INFO] [stdout]   35:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panicking::catch_unwind::do_call::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr] warning: unused import: `crate::life_time_f::life_time_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:581:40
[INFO] [stderr]   --> src/main.rs:32:5
[INFO] [stdout]   36:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panicking::catch_unwind::<(), core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:544:19
[INFO] [stderr] 32 | use crate::life_time_f::life_time_file;
[INFO] [stdout]   37:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panic::catch_unwind::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panic.rs:359:14
[INFO] [stderr] 
[INFO] [stdout]   38:     0x59ea41057fa2 - std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked::<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stderr] warning: unused import: `crate::closer_f::closer_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stderr]   --> src/main.rs:33:5
[INFO] [stdout]   39:     0x59ea41057fa2 - <std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1} as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr] 33 | use crate::closer_f::closer_file;
[INFO] [stdout]   40:     0x59ea410bf98f - <alloc[a7ee25936407c584]::boxed::Box<dyn core[8fb95b77d25ab6c8]::ops::function::FnOnce<(), Output = ()> + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2275:9
[INFO] [stderr] 
[INFO] [stdout]   41:     0x59ea410bf98f - <std[10d71ac2c42b111e]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr] warning: unused import: `crate::iterator_f::iterator_file`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stdout]   42:     0x7e98f2154aa4 - <unknown>
[INFO] [stderr]    |
[INFO] [stdout]   43:     0x7e98f21e1a64 - clone
[INFO] [stderr] 34 | use crate::iterator_f::iterator_file;
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] ---- tests::this_test_will_fail stdout ----
[INFO] [stderr] warning: unused import: `crate::smartpointer_f::smartpointer_file`
[INFO] [stdout] I got the value 8
[INFO] [stderr]   --> src/main.rs:35:5
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] thread 'tests::this_test_will_fail' (305) panicked at src/lib.rs:286:9:
[INFO] [stderr] 35 | use crate::smartpointer_f::smartpointer_file;
[INFO] [stdout] assertion `left == right` failed
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   left: 10
[INFO] [stderr] 
[INFO] [stdout]  right: 5
[INFO] [stderr] warning: unused import: `crate::thread_f::thread_file`
[INFO] [stdout] stack backtrace:
[INFO] [stderr]   --> src/main.rs:36:5
[INFO] [stdout]    0:     0x59ea410c0028 - std[10d71ac2c42b111e]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr] 36 | use crate::thread_f::thread_file;
[INFO] [stdout]    1:     0x59ea410c0028 - std[10d71ac2c42b111e]::backtrace_rs::backtrace::trace_unsynchronized::<std[10d71ac2c42b111e]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr] 
[INFO] [stdout]    2:     0x59ea410c0028 - std[10d71ac2c42b111e]::sys::backtrace::_print_fmt
[INFO] [stderr] warning: unused variable: `four`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]   --> src/enum_f.rs:35:9
[INFO] [stdout]    3:     0x59ea410c0028 - <<std[10d71ac2c42b111e]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[8fb95b77d25ab6c8]::fmt::Display>::fmt
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr] 35 |     let four = IpAddrKind::V4;
[INFO] [stdout]    4:     0x59ea410d3e5a - <core[8fb95b77d25ab6c8]::fmt::rt::Argument>::fmt
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_four`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]    |
[INFO] [stdout]    5:     0x59ea410d3e5a - core[8fb95b77d25ab6c8]::fmt::write
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    6:     0x59ea410c4842 - std[10d71ac2c42b111e]::io::default_write_fmt::<alloc[a7ee25936407c584]::vec::Vec<u8>>
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:622:11
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stdout]    7:     0x59ea410c4842 - <alloc[a7ee25936407c584]::vec::Vec<u8> as std[10d71ac2c42b111e]::io::Write>::write_fmt
[INFO] [stderr]   --> src/enum_f.rs:36:9
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:1977:13
[INFO] [stderr]    |
[INFO] [stdout]    8:     0x59ea4109f186 - <std[10d71ac2c42b111e]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr] 36 |     let six = IpAddrKind::V6;
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    9:     0x59ea4109f186 - std[10d71ac2c42b111e]::panicking::default_hook::{closure#0}
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:292:27
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stdout]   10:     0x59ea410b8519 - std[10d71ac2c42b111e]::panicking::default_hook
[INFO] [stderr]   --> src/enum_f.rs:38:9
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:316:9
[INFO] [stderr]    |
[INFO] [stdout]   11:     0x59ea410545cc - <alloc[a7ee25936407c584]::boxed::Box<dyn for<'a, 'b> core[8fb95b77d25ab6c8]::ops::function::Fn<(&'a std[10d71ac2c42b111e]::panic::PanicHookInfo<'b>,), Output = ()> + core[8fb95b77d25ab6c8]::marker::Sync + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::Fn<(&std[10d71ac2c42b111e]::panic::PanicHookInfo,)>>::call
[INFO] [stderr] 38 |     let home = IpAddrs{
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2289:9
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout]   12:     0x59ea410545cc - test[213991da798b1c03]::test_main_inner::<test[213991da798b1c03]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:155:21
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stdout]   13:     0x59ea410b86d2 - <alloc[a7ee25936407c584]::boxed::Box<dyn for<'a, 'b> core[8fb95b77d25ab6c8]::ops::function::Fn<(&'a std[10d71ac2c42b111e]::panic::PanicHookInfo<'b>,), Output = ()> + core[8fb95b77d25ab6c8]::marker::Sync + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::Fn<(&std[10d71ac2c42b111e]::panic::PanicHookInfo,)>>::call
[INFO] [stderr]   --> src/enum_f.rs:44:9
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2289:9
[INFO] [stderr]    |
[INFO] [stdout]   14:     0x59ea410b86d2 - std[10d71ac2c42b111e]::panicking::panic_with_hook
[INFO] [stderr] 44 |     let home = IpAddr::V4(127, 0, 0, 1);
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:833:13
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout]   15:     0x59ea4109f242 - std[10d71ac2c42b111e]::panicking::panic_handler::{closure#0}
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:698:13
[INFO] [stderr] warning: unused variable: `ip_kind`
[INFO] [stdout]   16:     0x59ea41094449 - std[10d71ac2c42b111e]::sys::backtrace::__rust_end_short_backtrace::<std[10d71ac2c42b111e]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]   --> src/enum_f.rs:52:10
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]    |
[INFO] [stdout]   17:     0x59ea4109ff5d - __rustc[3be9ba60078d4c86]::rust_begin_unwind
[INFO] [stderr] 52 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:689:5
[INFO] [stderr]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_kind`
[INFO] [stdout]   18:     0x59ea410d45dc - core[8fb95b77d25ab6c8]::panicking::panic_fmt
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panicking.rs:80:14
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stdout]   19:     0x59ea410d4493 - core[8fb95b77d25ab6c8]::panicking::assert_failed_inner
[INFO] [stderr]   --> src/match_f.rs:33:9
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panicking.rs:439:17
[INFO] [stderr]    |
[INFO] [stdout]   20:     0x59ea41093a15 - core[8fb95b77d25ab6c8]::panicking::assert_failed::<i32, i32>
[INFO] [stderr] 33 |     let a = value_in_cents(Coin::Quarter(UsState::Alabama));
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panicking.rs:394:5
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]   21:     0x59ea41042a78 - hello_cargo[d891df52e3c786f1]::tests::this_test_will_fail
[INFO] [stderr] 
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:286:9
[INFO] [stderr] warning: unused variable: `num_spaces`
[INFO] [stdout]   22:     0x59ea41040477 - hello_cargo[d891df52e3c786f1]::tests::this_test_will_fail::{closure#0}
[INFO] [stderr]   --> src/match_f.rs:47:20
[INFO] [stdout]                                at /opt/rustwide/workdir/src/lib.rs:284:29
[INFO] [stderr]    |
[INFO] [stdout]   23:     0x59ea410472b6 - <hello_cargo[d891df52e3c786f1]::tests::this_test_will_fail::{closure#0} as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr] 47 |     fn move_player(num_spaces: u8) {}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr]    |                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout]   24:     0x59ea410476ab - <fn() -> core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   25:     0x59ea410476ab - test[213991da798b1c03]::__rust_begin_short_backtrace::<core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>, fn() -> core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr]   --> src/iflet_f.rs:27:9
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:724:18
[INFO] [stderr]    |
[INFO] [stdout]   26:     0x59ea41054f25 - test[213991da798b1c03]::run_test_in_process::{closure#0}
[INFO] [stderr] 27 |     let mut count = 0;
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:747:74
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stdout]   27:     0x59ea41054f25 - <core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stdout]   28:     0x59ea41054f25 - std[10d71ac2c42b111e]::panicking::catch_unwind::do_call::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>, core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr] 
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:581:40
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stdout]   29:     0x59ea41054f25 - std[10d71ac2c42b111e]::panicking::catch_unwind::<core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>, core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>>
[INFO] [stderr]   --> src/iflet_f.rs:32:9
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:544:19
[INFO] [stderr]    |
[INFO] [stdout]   30:     0x59ea41054f25 - std[10d71ac2c42b111e]::panic::catch_unwind::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>, core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stderr] 32 |         count += 1;
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panic.rs:359:14
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stdout]   31:     0x59ea41054f25 - test[213991da798b1c03]::run_test_in_process
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:747:27
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stdout]   32:     0x59ea41054f25 - test[213991da798b1c03]::run_test::{closure#0}
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:668:43
[INFO] [stderr] 
[INFO] [stdout]   33:     0x59ea4104e834 - test[213991da798b1c03]::run_test::{closure#1}
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:698:41
[INFO] [stderr]   --> src/vector_f.rs:27:9
[INFO] [stdout]   34:     0x59ea4104e834 - std[10d71ac2c42b111e]::sys::backtrace::__rust_begin_short_backtrace::<test[213991da798b1c03]::run_test::{closure#1}, ()>
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:166:18
[INFO] [stderr] 27 |     let mut v4 = vec![1, 2, 3, 4, 5];
[INFO] [stdout]   35:     0x59ea41057fa2 - std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked::<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stderr]    |         ----^^
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stderr]    |         |
[INFO] [stdout]   36:     0x59ea41057fa2 - <core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stderr]    |
[INFO] [stdout]   37:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panicking::catch_unwind::do_call::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:581:40
[INFO] [stderr] 
[INFO] [stdout]   38:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panicking::catch_unwind::<(), core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:544:19
[INFO] [stderr]  --> src/vector_f.rs:2:9
[INFO] [stdout]   39:     0x59ea41057fa2 - std[10d71ac2c42b111e]::panic::catch_unwind::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stderr]   |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panic.rs:359:14
[INFO] [stderr] 2 |     let v: Vec<i32> = Vec::new(); //optional. blank vector of i32 type
[INFO] [stdout]   40:     0x59ea41057fa2 - std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked::<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stderr] 
[INFO] [stdout]   41:     0x59ea41057fa2 - <std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1} as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr] warning: unused variable: `v2`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stderr]   --> src/vector_f.rs:10:9
[INFO] [stdout]   42:     0x59ea410bf98f - <alloc[a7ee25936407c584]::boxed::Box<dyn core[8fb95b77d25ab6c8]::ops::function::FnOnce<(), Output = ()> + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]    |
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2275:9
[INFO] [stderr] 10 |     let v2 = vec![1, 2, 3, 4, 5];
[INFO] [stdout]   43:     0x59ea410bf98f - <std[10d71ac2c42b111e]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stderr] 
[INFO] [stdout]   44:     0x7e98f2154aa4 - <unknown>
[INFO] [stderr] warning: unused variable: `does_not_exist`
[INFO] [stdout]   45:     0x7e98f21e1a64 - clone
[INFO] [stderr]   --> src/vector_f.rs:25:9
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 25 |     let does_not_exist = v3.get(100); // -> return None
[INFO] [stdout] 
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_does_not_exist`
[INFO] [stdout] failures:
[INFO] [stderr] 
[INFO] [stdout]     tests::another
[INFO] [stderr] warning: unused variable: `row`
[INFO] [stdout]     tests::greeting_contains_name
[INFO] [stderr]   --> src/vector_f.rs:54:9
[INFO] [stdout]     tests::this_test_will_fail
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 54 |     let row = vec![
[INFO] [stdout] test result: FAILED. 15 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v6`
[INFO] [stderr]   --> src/vector_f.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |         let v6 = vec![1, 2, 3, 4];
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_v6`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/string_f.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let mut s = String::new();
[INFO] [stderr]   |         ----^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_f.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let mut s = String::new();
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_f.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let s = data.to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/string_f.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let s = "abc".to_string();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s6`
[INFO] [stderr]   --> src/string_f.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let s6 = format!("{s4}-{s5}"); // format! does not take ownership of its parameters
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s6`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s7`
[INFO] [stderr]   --> src/string_f.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let s7 = &s2[0..4]; 
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s7`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `team_score`
[INFO] [stderr]   --> src/hash_map_f.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let team_score= scores.get(&team).unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `team_score`
[INFO] [stderr]   --> src/hash_map_f.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let team_score = scores.get(&team).copied().unwrap_or(0);
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_team_score`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]  --> src/panic_f.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let v = vec![1, 2, 3];
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file_result`
[INFO] [stderr]   --> src/panic_f.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let greeting_file_result = File::open("hello.txt");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file2`
[INFO] [stderr]   --> src/panic_f.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let greeting_file2 = match greeting_file_result2 {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file`
[INFO] [stderr]   --> src/panic_f.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let greeting_file = File::open("hello.txt").unwrap_or_else(|error| {
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file`
[INFO] [stderr]   --> src/panic_f.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let greeting_file = File::open("hello.txt")
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file`
[INFO] [stderr]   --> src/panic_f.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let greeting_file = File::open("hello.txt")
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file`
[INFO] [stderr]    --> src/panic_f.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 |     let greeting_file = File::open("hello.txt")?;
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/life_time_f.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let s: &'static str = "I have a static lifetime.";
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `list`
[INFO] [stderr]   --> src/smartpointer_f.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let list = Cons(1, Box::new(Cons(2, Box::new(Cons(3, Box::new(Nil))))));
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/smartpointer_f.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |     let c = CustomSmartPointer {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]   --> src/smartpointer_f.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let d = CustomSmartPointer {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/smartpointer_f.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |     let b = List2::Cons(3, Rc::clone(&a));
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/smartpointer_f.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |     let c = List2::Cons(4, Rc::clone(&a));
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/smartpointer_f.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |     let b = List2::Cons(3, Rc::clone(&a));
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/smartpointer_f.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |         let c = List2::Cons(4, Rc::clone(&a));
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]   --> src/main.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 | struct Rectangle {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `area` is never used
[INFO] [stderr]   --> src/main.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 45 | impl Rectangle {
[INFO] [stderr]    | -------------- method in this implementation
[INFO] [stderr] 46 |     fn area(&self) -> u32 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `stfile` is never used
[INFO] [stderr]  --> src/struct_f.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn stfile() {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `area` is never used
[INFO] [stderr]   --> src/struct_f.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn area(w: i32, h : i32) -> i32 {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `area2` is never used
[INFO] [stderr]   --> src/struct_f.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn area2(dimensions: (u32, u32)) -> u32 {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]   --> src/struct_f.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct Rectangle {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `area3` is never used
[INFO] [stderr]   --> src/struct_f.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn area3(rectangle: &Rectangle) -> u32 {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]  --> src/method_f.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Rectangle {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `area` and `can_hold` are never used
[INFO] [stderr]   --> src/method_f.rs:8:8
[INFO] [stderr]    |
[INFO] [stderr]  7 | impl Rectangle {
[INFO] [stderr]    | -------------- methods in this implementation
[INFO] [stderr]  8 |     fn area(&self) -> u32 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 11 |     fn can_hold(&self, other:&Rectangle ) -> bool {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `method_file` is never used
[INFO] [stderr]   --> src/method_f.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn method_file() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddrKind` is never used
[INFO] [stderr]  --> src/enum_f.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum IpAddrKind {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddr` is never used
[INFO] [stderr]  --> src/enum_f.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | enum IpAddr {
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Message` is never used
[INFO] [stderr]   --> src/enum_f.rs:12:6
[INFO] [stderr]    |
[INFO] [stderr] 12 | enum Message {
[INFO] [stderr]    |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `call` is never used
[INFO] [stderr]   --> src/enum_f.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl Message {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] 20 |         fn call(&self) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `IpAddrs` is never constructed
[INFO] [stderr]   --> src/enum_f.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | struct IpAddrs {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `enum_file` is never used
[INFO] [stderr]   --> src/enum_f.rs:34:8
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn enum_file() {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `route` is never used
[INFO] [stderr]   --> src/enum_f.rs:52:4
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn route(ip_kind: IpAddrKind) {}
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `UsState` is never used
[INFO] [stderr]  --> src/match_f.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum UsState {
[INFO] [stderr]   |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Coin` is never used
[INFO] [stderr]  --> src/match_f.rs:8:6
[INFO] [stderr]   |
[INFO] [stderr] 8 | enum Coin {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `value_in_cents` is never used
[INFO] [stderr]   --> src/match_f.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `plus_one` is never used
[INFO] [stderr]   --> src/match_f.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `match_file` is never used
[INFO] [stderr]   --> src/match_f.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn match_file() {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `UsState` is never used
[INFO] [stderr]  --> src/iflet_f.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum UsState {
[INFO] [stderr]   |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Coin` is never used
[INFO] [stderr]  --> src/iflet_f.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum Coin {
[INFO] [stderr]   |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `iflet_file` is never used
[INFO] [stderr]   --> src/iflet_f.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn iflet_file() {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `vector_file` is never used
[INFO] [stderr]  --> src/vector_f.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn vector_file() {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `string_file` is never used
[INFO] [stderr]  --> src/string_f.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn string_file() {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `hash_map_file` is never used
[INFO] [stderr]  --> src/hash_map_f.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn hash_map_file() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `painc_file` is never used
[INFO] [stderr]  --> src/panic_f.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn painc_file() {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `value` are never used
[INFO] [stderr]   --> src/panic_f.rs:83:16
[INFO] [stderr]    |
[INFO] [stderr] 82 |     impl Guess {
[INFO] [stderr]    |     ---------- associated items in this implementation
[INFO] [stderr] 83 |         pub fn new(value: i32) -> Guess {
[INFO] [stderr]    |                ^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |         pub fn value(&self) -> i32 {
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_username_from_file` is never used
[INFO] [stderr]   --> src/panic_f.rs:99:4
[INFO] [stderr]    |
[INFO] [stderr] 99 | fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_username_from_file_v2` is never used
[INFO] [stderr]    --> src/panic_f.rs:116:4
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn read_username_from_file_v2() -> Result<String, io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_username_from_file_v3` is never used
[INFO] [stderr]    --> src/panic_f.rs:123:4
[INFO] [stderr]     |
[INFO] [stderr] 123 | fn read_username_from_file_v3() -> Result<String, io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_username_from_file_v4` is never used
[INFO] [stderr]    --> src/panic_f.rs:131:4
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn read_username_from_file_v4() -> Result<String, io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]    --> src/panic_f.rs:135:4
[INFO] [stderr]     |
[INFO] [stderr] 135 | fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Summary` is never used
[INFO] [stderr]   --> src/trait_f.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub trait Summary {
[INFO] [stderr]    |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `NewsArticle` is never constructed
[INFO] [stderr]   --> src/trait_f.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub struct NewsArticle {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Tweet` is never constructed
[INFO] [stderr]   --> src/trait_f.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub struct Tweet {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `traint_file` is never used
[INFO] [stderr]   --> src/trait_f.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn traint_file() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `notify` is never used
[INFO] [stderr]   --> src/trait_f.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 | pub fn notify<T: Summary>(item: &T) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `returns_summarizable` is never used
[INFO] [stderr]    --> src/trait_f.rs:104:4
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn returns_summarizable() -> impl Summary {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Pair` is never constructed
[INFO] [stderr]    --> src/trait_f.rs:117:8
[INFO] [stderr]     |
[INFO] [stderr] 117 | struct Pair<T> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]    --> src/trait_f.rs:123:8
[INFO] [stderr]     |
[INFO] [stderr] 122 | impl<T> Pair<T> {
[INFO] [stderr]     | --------------- associated function in this implementation
[INFO] [stderr] 123 |     fn new(x: T, y: T) -> Self {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `cmp_display` is never used
[INFO] [stderr]    --> src/trait_f.rs:129:8
[INFO] [stderr]     |
[INFO] [stderr] 128 | impl<T: Display + PartialOrd> Pair<T> {
[INFO] [stderr]     | ------------------------------------- method in this implementation
[INFO] [stderr] 129 |     fn cmp_display(&self) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `life_time_file` is never used
[INFO] [stderr]  --> src/life_time_f.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn life_time_file() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `longest` is never used
[INFO] [stderr]   --> src/life_time_f.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `first_word` is never used
[INFO] [stderr]   --> src/life_time_f.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn first_word(s: &str) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `longest_with_an_announcement` is never used
[INFO] [stderr]   --> src/life_time_f.rs:46:4
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn longest_with_an_announcement<'a, T>(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `ShirtColor` is never used
[INFO] [stderr]  --> src/closer_f.rs:4:6
[INFO] [stderr]   |
[INFO] [stderr] 4 | enum ShirtColor {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Inventory` is never constructed
[INFO] [stderr]  --> src/closer_f.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Inventory {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `giveaway` and `most_stocked` are never used
[INFO] [stderr]   --> src/closer_f.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl Inventory {
[INFO] [stderr]    | -------------- methods in this implementation
[INFO] [stderr] 14 |     fn giveaway(&self, user_preference: Option<ShirtColor>) -> ShirtColor {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 18 |     fn most_stocked(&self) -> ShirtColor {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]   --> src/closer_f.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | struct Rectangle {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `closer_file` is never used
[INFO] [stderr]   --> src/closer_f.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn closer_file() {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `iterator_file` is never used
[INFO] [stderr]  --> src/iterator_f.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn iterator_file() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MyBox` is never constructed
[INFO] [stderr]  --> src/smartpointer_f.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct MyBox<T>(T);
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> src/smartpointer_f.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | impl<T> MyBox<T> {
[INFO] [stderr]   | ---------------- associated function in this implementation
[INFO] [stderr] 8 |     fn new(x: T) -> MyBox<T> {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `hello` is never used
[INFO] [stderr]   --> src/smartpointer_f.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn hello(name: &str) {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `List` is never used
[INFO] [stderr]   --> src/smartpointer_f.rs:25:6
[INFO] [stderr]    |
[INFO] [stderr] 25 | enum List {
[INFO] [stderr]    |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `CustomSmartPointer` is never constructed
[INFO] [stderr]   --> src/smartpointer_f.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 | struct CustomSmartPointer {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `List2` is never used
[INFO] [stderr]   --> src/smartpointer_f.rs:40:6
[INFO] [stderr]    |
[INFO] [stderr] 40 | enum List2 {
[INFO] [stderr]    |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `List3` is never used
[INFO] [stderr]   --> src/smartpointer_f.rs:49:6
[INFO] [stderr]    |
[INFO] [stderr] 49 | enum List3 {
[INFO] [stderr]    |      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Node` is never constructed
[INFO] [stderr]   --> src/smartpointer_f.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct Node {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `smartpointer_file` is never used
[INFO] [stderr]   --> src/smartpointer_f.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub fn smartpointer_file() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `thread_file` is never used
[INFO] [stderr]  --> src/thread_f.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn thread_file() {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello_cargo` (bin "hello_cargo" test) generated 121 warnings (run `cargo fix --bin "hello_cargo" -p hello_cargo --tests` to apply 55 suggestions)
[INFO] [stderr] warning: `hello_cargo` (bin "hello_cargo") generated 121 warnings (121 duplicates)
[INFO] [stderr] warning: `hello_cargo` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hello_cargo-89d281d20633c5aa)
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141", kill_on_drop: false }`
[INFO] [stdout] f80bff3559d65444c3047331b817f7bbf2d4328a0668f7ff6ce33c336a8c3141
