[INFO] cloning repository https://github.com/load28/awesome_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/load28/awesome_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fload28%2Fawesome_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fload28%2Fawesome_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e56f40169ddc55266b8d4964b287e72a5db8cec
[INFO] testing load28/awesome_rust against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fload28%2Fawesome_rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/load28/awesome_rust on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/load28/awesome_rust
[INFO] finished tweaking git repo https://github.com/load28/awesome_rust
[INFO] tweaked toml for git repo https://github.com/load28/awesome_rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/load28/awesome_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ce5f517671f2c706b586878121e383b508d247b6f105f7563faf1717d44ca734
[INFO] running `Command { std: "docker" "start" "-a" "ce5f517671f2c706b586878121e383b508d247b6f105f7563faf1717d44ca734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce5f517671f2c706b586878121e383b508d247b6f105f7563faf1717d44ca734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce5f517671f2c706b586878121e383b508d247b6f105f7563faf1717d44ca734", kill_on_drop: false }`
[INFO] [stdout] ce5f517671f2c706b586878121e383b508d247b6f105f7563faf1717d44ca734
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d871ff41c991654a08c5bd6a64df8fd2bb9d571ff5143cf7cf51e65ab070a769
[INFO] running `Command { std: "docker" "start" "-a" "d871ff41c991654a08c5bd6a64df8fd2bb9d571ff5143cf7cf51e65ab070a769", kill_on_drop: false }`
[INFO] [stderr]    Compiling untitled1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `one`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let one = a[0];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `two`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let two = a[1];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_two`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/main.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let s = "hello"; // 스트링 리터럴 (문자열은 고정된 크기 - 컴파일 타입에서 고정된 사이즈를 가지고 있기 때문에 스택에 저장 !, String 타입                                         ...
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s4`
[INFO] [stdout]    --> src/main.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let s4 = s3.clone(); // 클론을 통해서 깊은 복사를 수행 할 수 있음
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_s4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let y = x;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/main.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     let b = &a[1..]; // 스트링 리터럴이 불변인 이유는 불변 참조자를 통해서 슬라이스가 만들어지기 때문이다                                 ...
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/rust_enum.rs:61:7
[INFO] [stdout]    |
[INFO] [stdout] 61 |   let none: Option<i32> = None;
[INFO] [stdout]    |       ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `White`
[INFO] [stdout]   --> src/rust_enum.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 38 |   White(i8, i8, i8),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]   --> src/rust_enum.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |   Green(String),
[INFO] [stdout]    |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Palate`
[INFO] [stdout]   --> src/rust_enum.rs:41:3
[INFO] [stdout]    |
[INFO] [stdout] 41 | /   Palate {
[INFO] [stdout] 42 | |     color: String,
[INFO] [stdout] 43 | |     opacity: i8
[INFO] [stdout] 44 | |   }
[INFO] [stdout]    | |___^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]    --> src/main.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn take_ownership(some: String) -> (String, i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     10 + 1; // 더하기 연산도 하나의 표현식이기 때문에 결과를 반환한다
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ipAddr` should have a snake case name
[INFO] [stdout]   --> src/rust_enum.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn get_ipAddr() -> IpAddrKind {
[INFO] [stdout]    |    ^^^^^^^^^^ help: convert the identifier to snake case: `get_ip_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "d871ff41c991654a08c5bd6a64df8fd2bb9d571ff5143cf7cf51e65ab070a769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d871ff41c991654a08c5bd6a64df8fd2bb9d571ff5143cf7cf51e65ab070a769", kill_on_drop: false }`
[INFO] [stdout] d871ff41c991654a08c5bd6a64df8fd2bb9d571ff5143cf7cf51e65ab070a769
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9613ac4ce7370d0ec90f1494d14ee5e3dd31bb7702c93c64ed610ec2c69dca4a
[INFO] running `Command { std: "docker" "start" "-a" "9613ac4ce7370d0ec90f1494d14ee5e3dd31bb7702c93c64ed610ec2c69dca4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling untitled1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `one`
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let one = a[0];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `two`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let two = a[1];
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_two`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/main.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let s = "hello"; // 스트링 리터럴 (문자열은 고정된 크기 - 컴파일 타입에서 고정된 사이즈를 가지고 있기 때문에 스택에 저장 !, String 타입                                         ...
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s4`
[INFO] [stdout]    --> src/main.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let s4 = s3.clone(); // 클론을 통해서 깊은 복사를 수행 할 수 있음
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_s4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/main.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let y = x;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/main.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     let b = &a[1..]; // 스트링 리터럴이 불변인 이유는 불변 참조자를 통해서 슬라이스가 만들어지기 때문이다                                 ...
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/rust_enum.rs:61:7
[INFO] [stdout]    |
[INFO] [stdout] 61 |   let none: Option<i32> = None;
[INFO] [stdout]    |       ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `White`
[INFO] [stdout]   --> src/rust_enum.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 38 |   White(i8, i8, i8),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]   --> src/rust_enum.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |   Green(String),
[INFO] [stdout]    |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Palate`
[INFO] [stdout]   --> src/rust_enum.rs:41:3
[INFO] [stdout]    |
[INFO] [stdout] 41 | /   Palate {
[INFO] [stdout] 42 | |     color: String,
[INFO] [stdout] 43 | |     opacity: i8
[INFO] [stdout] 44 | |   }
[INFO] [stdout]    | |___^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]    --> src/main.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn take_ownership(some: String) -> (String, i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     10 + 1; // 더하기 연산도 하나의 표현식이기 때문에 결과를 반환한다
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ipAddr` should have a snake case name
[INFO] [stdout]   --> src/rust_enum.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn get_ipAddr() -> IpAddrKind {
[INFO] [stdout]    |    ^^^^^^^^^^ help: convert the identifier to snake case: `get_ip_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "9613ac4ce7370d0ec90f1494d14ee5e3dd31bb7702c93c64ed610ec2c69dca4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9613ac4ce7370d0ec90f1494d14ee5e3dd31bb7702c93c64ed610ec2c69dca4a", kill_on_drop: false }`
[INFO] [stdout] 9613ac4ce7370d0ec90f1494d14ee5e3dd31bb7702c93c64ed610ec2c69dca4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e5ea732deb2d5c22136410efeb1beeb02d89436d67b646d6448592638c25a6ea
[INFO] running `Command { std: "docker" "start" "-a" "e5ea732deb2d5c22136410efeb1beeb02d89436d67b646d6448592638c25a6ea", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `one`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let one = a[0];
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `two`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let two = a[1];
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_two`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/main.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |     let s = "hello"; // 스트링 리터럴 (문자열은 고정된 크기 - 컴파일 타입에서 고정된 사이즈를 가지고 있기 때문에 스택에 저장 !, String 타입                                         ...
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s4`
[INFO] [stderr]    --> src/main.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |     let s4 = s3.clone(); // 클론을 통해서 깊은 복사를 수행 할 수 있음
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_s4`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |     let y = x;
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:168:9
[INFO] [stderr]     |
[INFO] [stderr] 168 |     let b = &a[1..]; // 스트링 리터럴이 불변인 이유는 불변 참조자를 통해서 슬라이스가 만들어지기 때문이다                                 ...
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/rust_enum.rs:61:7
[INFO] [stderr]    |
[INFO] [stderr] 61 |   let none: Option<i32> = None;
[INFO] [stderr]    |       ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `White`
[INFO] [stderr]   --> src/rust_enum.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |   White(i8, i8, i8),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Green`
[INFO] [stderr]   --> src/rust_enum.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   Green(String),
[INFO] [stderr]    |   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Palate`
[INFO] [stderr]   --> src/rust_enum.rs:41:3
[INFO] [stderr]    |
[INFO] [stderr] 41 | /   Palate {
[INFO] [stderr] 42 | |     color: String,
[INFO] [stderr] 43 | |     opacity: i8
[INFO] [stderr] 44 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `take_ownership`
[INFO] [stderr]    --> src/main.rs:136:4
[INFO] [stderr]     |
[INFO] [stderr] 136 | fn take_ownership(some: String) -> (String, i32) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     10 + 1; // 더하기 연산도 하나의 표현식이기 때문에 결과를 반환한다
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_ipAddr` should have a snake case name
[INFO] [stderr]   --> src/rust_enum.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn get_ipAddr() -> IpAddrKind {
[INFO] [stderr]    |    ^^^^^^^^^^ help: convert the identifier to snake case: `get_ip_addr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/untitled1-8f9bbc811c5337ec)
[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" "e5ea732deb2d5c22136410efeb1beeb02d89436d67b646d6448592638c25a6ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5ea732deb2d5c22136410efeb1beeb02d89436d67b646d6448592638c25a6ea", kill_on_drop: false }`
[INFO] [stdout] e5ea732deb2d5c22136410efeb1beeb02d89436d67b646d6448592638c25a6ea