[INFO] cloning repository https://github.com/mDanone/rust_examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mDanone/rust_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmDanone%2Frust_examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmDanone%2Frust_examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 358eb452f771744f523b6466e2acb94e90181972
[INFO] testing mDanone/rust_examples against 1.83.0 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmDanone%2Frust_examples" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mDanone/rust_examples on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mDanone/rust_examples
[INFO] finished tweaking git repo https://github.com/mDanone/rust_examples
[INFO] tweaked toml for git repo https://github.com/mDanone/rust_examples written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mDanone/rust_examples 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" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c87e574d05f10b4ce5a1fe3409ffc506093fd9a3f43e483ab0b700a4172ac45
[INFO] running `Command { std: "docker" "start" "-a" "6c87e574d05f10b4ce5a1fe3409ffc506093fd9a3f43e483ab0b700a4172ac45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c87e574d05f10b4ce5a1fe3409ffc506093fd9a3f43e483ab0b700a4172ac45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c87e574d05f10b4ce5a1fe3409ffc506093fd9a3f43e483ab0b700a4172ac45", kill_on_drop: false }`
[INFO] [stdout] 6c87e574d05f10b4ce5a1fe3409ffc506093fd9a3f43e483ab0b700a4172ac45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7501ab047161c48c0b3dbdf4c3cdb9fec5b76a78b3c5f3479686f88873f3162f
[INFO] running `Command { std: "docker" "start" "-a" "7501ab047161c48c0b3dbdf4c3cdb9fec5b76a78b3c5f3479686f88873f3162f", kill_on_drop: false }`
[INFO] [stderr]    Compiling vectors v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `is_article`
[INFO] [stdout]   --> src/generics/generics.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn returns_summarizable(is_article: bool) -> impl Summary {
[INFO] [stdout]    |                             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_article`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point1`
[INFO] [stdout]    --> src/generics/generics.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let point1 = Point{x: 1, y: 3};
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_point1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point2`
[INFO] [stdout]    --> src/generics/generics.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let point2 = Point{x: 'h', y: 'c'};
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_point2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/generics/lifetime_references.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let i = ImportantExcerpt{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/enums/enums.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let x = SomeValues::Int(3);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let greeting_file = match greeting_file_result {
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_with_wrap`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let file_with_wrap = File::open("hello2.txt").unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_with_wrap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_with_expect`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let file_with_expect = File::open("expected").expect("Some Error message");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_with_expect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `username`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let username = username_result.expect("Can not read some file!");
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_username`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Err(err) => continue,
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]   --> src/collections/hash_maps.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let score = scores.get(&team_name).copied().unwrap_or(0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]  --> src/generics/lifetime_references.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]   --> src/generics/lifetime_references.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/generics/lifetime_references.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/generics/lifetime_references.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn main(){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enums/enums.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/enums/enums.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Write(String),
[INFO] [stdout]   |     ----- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Write(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]   --> src/enums/enums.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | enum Message{
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 7  |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 8  |     Move {x: i32, y: i32},
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 9  |     Write(String),
[INFO] [stdout] 10 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_parent` is never used
[INFO] [stdout]   --> src/enums/enums.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn test_parent(){}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_child` is never used
[INFO] [stdout]   --> src/enums/enums.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn test_child(){
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_of_number_resolving` is never used
[INFO] [stdout]   --> src/exceptions/exceptions.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn part_of_number_resolving(){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alaska` is never constructed
[INFO] [stdout]  --> src/control_flow/control_flow.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState{
[INFO] [stdout]   |      ------- variant in this enum
[INFO] [stdout] 3 |     Alabama,
[INFO] [stdout] 4 |     Alaska
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> src/control_flow/control_flow.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 8  |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 9  |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_whitelist` is never used
[INFO] [stdout]  --> src/scopes/scopes.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |         pub fn add_to_whitelist(){}
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_at_restaurant` is never used
[INFO] [stdout]   --> src/scopes/scopes.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn eat_at_restaurant(){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/collections/tasks.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         stdin().read_line(&mut input_string);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 83 |         let _ = stdin().read_line(&mut input_string);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Guess`, `Rectangle`, `adder`, `greeting`, and `prints_and_returns_10`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     adder, 
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     greeting,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     Guess,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     Rectangle,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     prints_and_returns_10
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "7501ab047161c48c0b3dbdf4c3cdb9fec5b76a78b3c5f3479686f88873f3162f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7501ab047161c48c0b3dbdf4c3cdb9fec5b76a78b3c5f3479686f88873f3162f", kill_on_drop: false }`
[INFO] [stdout] 7501ab047161c48c0b3dbdf4c3cdb9fec5b76a78b3c5f3479686f88873f3162f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bf732c1d04ca03422e18a249b161f0700fa09b1bddb0829755038015473ce67
[INFO] running `Command { std: "docker" "start" "-a" "9bf732c1d04ca03422e18a249b161f0700fa09b1bddb0829755038015473ce67", kill_on_drop: false }`
[INFO] [stderr]    Compiling vectors v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `is_article`
[INFO] [stdout]   --> src/generics/generics.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn returns_summarizable(is_article: bool) -> impl Summary {
[INFO] [stdout]    |                             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_article`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point1`
[INFO] [stdout]    --> src/generics/generics.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let point1 = Point{x: 1, y: 3};
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_point1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point2`
[INFO] [stdout]    --> src/generics/generics.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let point2 = Point{x: 'h', y: 'c'};
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_point2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/generics/lifetime_references.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let i = ImportantExcerpt{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/enums/enums.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let x = SomeValues::Int(3);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let greeting_file = match greeting_file_result {
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_with_wrap`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let file_with_wrap = File::open("hello2.txt").unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_with_wrap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_with_expect`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let file_with_expect = File::open("expected").expect("Some Error message");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_with_expect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `username`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let username = username_result.expect("Can not read some file!");
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_username`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Err(err) => continue,
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]   --> src/collections/hash_maps.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let score = scores.get(&team_name).copied().unwrap_or(0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]  --> src/generics/lifetime_references.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]   --> src/generics/lifetime_references.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/generics/lifetime_references.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/generics/lifetime_references.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn main(){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enums/enums.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/enums/enums.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Write(String),
[INFO] [stdout]   |     ----- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Write(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]   --> src/enums/enums.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | enum Message{
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 7  |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 8  |     Move {x: i32, y: i32},
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 9  |     Write(String),
[INFO] [stdout] 10 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_parent` is never used
[INFO] [stdout]   --> src/enums/enums.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn test_parent(){}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_child` is never used
[INFO] [stdout]   --> src/enums/enums.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn test_child(){
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_of_number_resolving` is never used
[INFO] [stdout]   --> src/exceptions/exceptions.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn part_of_number_resolving(){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alaska` is never constructed
[INFO] [stdout]  --> src/control_flow/control_flow.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState{
[INFO] [stdout]   |      ------- variant in this enum
[INFO] [stdout] 3 |     Alabama,
[INFO] [stdout] 4 |     Alaska
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> src/control_flow/control_flow.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 8  |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 9  |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_whitelist` is never used
[INFO] [stdout]  --> src/scopes/scopes.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |         pub fn add_to_whitelist(){}
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_at_restaurant` is never used
[INFO] [stdout]   --> src/scopes/scopes.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn eat_at_restaurant(){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/collections/tasks.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         stdin().read_line(&mut input_string);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 83 |         let _ = stdin().read_line(&mut input_string);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Guess`, `Rectangle`, `adder`, `greeting`, and `prints_and_returns_10`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     adder, 
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 3 |     greeting,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     Guess,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     Rectangle,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 6 |     prints_and_returns_10
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_article`
[INFO] [stdout]   --> src/generics/generics.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 | pub fn returns_summarizable(is_article: bool) -> impl Summary {
[INFO] [stdout]    |                             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_article`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point1`
[INFO] [stdout]    --> src/generics/generics.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let point1 = Point{x: 1, y: 3};
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_point1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point2`
[INFO] [stdout]    --> src/generics/generics.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let point2 = Point{x: 'h', y: 'c'};
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_point2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/generics/lifetime_references.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let i = ImportantExcerpt{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/enums/enums.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let x = SomeValues::Int(3);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let greeting_file = match greeting_file_result {
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_with_wrap`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let file_with_wrap = File::open("hello2.txt").unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_with_wrap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_with_expect`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let file_with_expect = File::open("expected").expect("Some Error message");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_with_expect`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `username`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let username = username_result.expect("Can not read some file!");
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_username`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/exceptions/exceptions.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Err(err) => continue,
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `score`
[INFO] [stdout]   --> src/collections/hash_maps.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let score = scores.get(&team_name).copied().unwrap_or(0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest` is never used
[INFO] [stdout]  --> src/generics/lifetime_references.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]   --> src/generics/lifetime_references.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct ImportantExcerpt<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_with_an_announcement` is never used
[INFO] [stdout]   --> src/generics/lifetime_references.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn longest_with_an_announcement<'a, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/generics/lifetime_references.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn main(){
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/enums/enums.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind {
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/enums/enums.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Write(String),
[INFO] [stdout]   |     ----- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Write(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]   --> src/enums/enums.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | enum Message{
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 7  |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 8  |     Move {x: i32, y: i32},
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 9  |     Write(String),
[INFO] [stdout] 10 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_parent` is never used
[INFO] [stdout]   --> src/enums/enums.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn test_parent(){}
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_child` is never used
[INFO] [stdout]   --> src/enums/enums.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn test_child(){
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part_of_number_resolving` is never used
[INFO] [stdout]   --> src/exceptions/exceptions.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn part_of_number_resolving(){
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alaska` is never constructed
[INFO] [stdout]  --> src/control_flow/control_flow.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum UsState{
[INFO] [stdout]   |      ------- variant in this enum
[INFO] [stdout] 3 |     Alabama,
[INFO] [stdout] 4 |     Alaska
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> src/control_flow/control_flow.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | enum Coin {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 8  |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 9  |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_whitelist` is never used
[INFO] [stdout]  --> src/scopes/scopes.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |         pub fn add_to_whitelist(){}
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eat_at_restaurant` is never used
[INFO] [stdout]   --> src/scopes/scopes.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn eat_at_restaurant(){
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/collections/tasks.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         stdin().read_line(&mut input_string);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 83 |         let _ = stdin().read_line(&mut input_string);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "9bf732c1d04ca03422e18a249b161f0700fa09b1bddb0829755038015473ce67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bf732c1d04ca03422e18a249b161f0700fa09b1bddb0829755038015473ce67", kill_on_drop: false }`
[INFO] [stdout] 9bf732c1d04ca03422e18a249b161f0700fa09b1bddb0829755038015473ce67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 53d40566cfcb2e51956840576d24e98bfe098814b0aeee302f76b4f71118d63a
[INFO] running `Command { std: "docker" "start" "-a" "53d40566cfcb2e51956840576d24e98bfe098814b0aeee302f76b4f71118d63a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `is_article`
[INFO] [stderr]   --> src/generics/generics.rs:92:29
[INFO] [stderr]    |
[INFO] [stderr] 92 | pub fn returns_summarizable(is_article: bool) -> impl Summary {
[INFO] [stderr]    |                             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_article`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `point1`
[INFO] [stderr]    --> src/generics/generics.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |     let point1 = Point{x: 1, y: 3};
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_point1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `point2`
[INFO] [stderr]    --> src/generics/generics.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let point2 = Point{x: 'h', y: 'c'};
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_point2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/generics/lifetime_references.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let i = ImportantExcerpt{
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/enums/enums.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let x = SomeValues::Int(3);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file`
[INFO] [stderr]   --> src/exceptions/exceptions.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let greeting_file = match greeting_file_result {
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_with_wrap`
[INFO] [stderr]   --> src/exceptions/exceptions.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let file_with_wrap = File::open("hello2.txt").unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_with_wrap`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_with_expect`
[INFO] [stderr]   --> src/exceptions/exceptions.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let file_with_expect = File::open("expected").expect("Some Error message");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_with_expect`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `username`
[INFO] [stderr]   --> src/exceptions/exceptions.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let username = username_result.expect("Can not read some file!");
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_username`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/exceptions/exceptions.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |             Err(err) => continue,
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `score`
[INFO] [stderr]   --> src/collections/hash_maps.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let score = scores.get(&team_name).copied().unwrap_or(0);
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_score`
[INFO] [stderr] 
[INFO] [stderr] warning: function `longest` is never used
[INFO] [stderr]  --> src/generics/lifetime_references.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stderr]   --> src/generics/lifetime_references.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct ImportantExcerpt<'a> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `longest_with_an_announcement` is never used
[INFO] [stderr]   --> src/generics/lifetime_references.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn longest_with_an_announcement<'a, T>(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/generics/lifetime_references.rs:33:4
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn main(){
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `IpAddrKind` is never used
[INFO] [stderr]  --> src/enums/enums.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum IpAddrKind {
[INFO] [stderr]   |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]  --> src/enums/enums.rs:9:11
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Write(String),
[INFO] [stderr]   |     ----- ^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr]   |
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Write(()),
[INFO] [stderr]   |           ~~
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stderr]   --> src/enums/enums.rs:7:5
[INFO] [stderr]    |
[INFO] [stderr] 6  | enum Message{
[INFO] [stderr]    |      ------- variants in this enum
[INFO] [stderr] 7  |     Quit,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 8  |     Move {x: i32, y: i32},
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 9  |     Write(String),
[INFO] [stderr] 10 |     ChangeColor(i32, i32, i32),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_parent` is never used
[INFO] [stderr]   --> src/enums/enums.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn test_parent(){}
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_child` is never used
[INFO] [stderr]   --> src/enums/enums.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn test_child(){
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `part_of_number_resolving` is never used
[INFO] [stderr]   --> src/exceptions/exceptions.rs:46:4
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn part_of_number_resolving(){
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Alaska` is never constructed
[INFO] [stderr]  --> src/control_flow/control_flow.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum UsState{
[INFO] [stderr]   |      ------- variant in this enum
[INFO] [stderr] 3 |     Alabama,
[INFO] [stderr] 4 |     Alaska
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stderr]   --> src/control_flow/control_flow.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 7  | enum Coin {
[INFO] [stderr]    |      ---- variants in this enum
[INFO] [stderr] 8  |     Penny,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 9  |     Nickel,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 10 |     Dime,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `add_to_whitelist` is never used
[INFO] [stderr]  --> src/scopes/scopes.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 |         pub fn add_to_whitelist(){}
[INFO] [stderr]   |                ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `eat_at_restaurant` is never used
[INFO] [stderr]   --> src/scopes/scopes.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn eat_at_restaurant(){
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/collections/tasks.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         stdin().read_line(&mut input_string);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 83 |         let _ = stdin().read_line(&mut input_string);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `vectors` (lib) generated 26 warnings
[INFO] [stderr] warning: unused imports: `Guess`, `Rectangle`, `adder`, `greeting`, and `prints_and_returns_10`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     adder, 
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 3 |     greeting,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 4 |     Guess,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 5 |     Rectangle,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 6 |     prints_and_returns_10
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `vectors` (bin "vectors") generated 1 warning (run `cargo fix --bin "vectors"` to apply 1 suggestion)
[INFO] [stderr] warning: `vectors` (lib test) generated 26 warnings (26 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/vectors-8f528a3b0d8cd651)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/vectors-29e841cb71e7b74b)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::greater_than_100 ... ignored
[INFO] [stdout] test tests::it_adds_two ... ok
[INFO] [stdout] test tests::greeting_contains_name ... ok
[INFO] [stdout] test tests::this_test_will_fail ... ignored
[INFO] [stdout] test tests::larger_or_not ... ok
[INFO] [stdout] test tests::exploration ... ok
[INFO] [stdout] test tests::this_test_will_pass ... ok
[INFO] [stdout] test tests::smaller_or_not ... ok
[INFO] [stdout] test tests::another - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-28785337aee34b44)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_adds_two ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tests_package.rs (/opt/rustwide/target/debug/deps/tests_package-f54b223ae3ee6e56)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vectors
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "53d40566cfcb2e51956840576d24e98bfe098814b0aeee302f76b4f71118d63a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53d40566cfcb2e51956840576d24e98bfe098814b0aeee302f76b4f71118d63a", kill_on_drop: false }`
[INFO] [stdout] 53d40566cfcb2e51956840576d24e98bfe098814b0aeee302f76b4f71118d63a
