[INFO] cloning repository https://github.com/dkxltks25/study-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dkxltks25/study-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdkxltks25%2Fstudy-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdkxltks25%2Fstudy-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 04121abcb2a69226bcc8a5ca2750f982cb05ee74
[INFO] checking dkxltks25/study-rust against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdkxltks25%2Fstudy-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dkxltks25/study-rust on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dkxltks25/study-rust
[INFO] finished tweaking git repo https://github.com/dkxltks25/study-rust
[INFO] tweaked toml for git repo https://github.com/dkxltks25/study-rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/dkxltks25/study-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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] 6fdfdbbdb1d23f219adab0ef0401f4e73015390cb96bc3ab8c7fca530511bcb4
[INFO] running `Command { std: "docker" "start" "-a" "6fdfdbbdb1d23f219adab0ef0401f4e73015390cb96bc3ab8c7fca530511bcb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fdfdbbdb1d23f219adab0ef0401f4e73015390cb96bc3ab8c7fca530511bcb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fdfdbbdb1d23f219adab0ef0401f4e73015390cb96bc3ab8c7fca530511bcb4", kill_on_drop: false }`
[INFO] [stdout] 6fdfdbbdb1d23f219adab0ef0401f4e73015390cb96bc3ab8c7fca530511bcb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9ea841a1fea1ff500f1238088ee0c5f07f2efca0662d1a72ddef0a55ff0ef2e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f9ea841a1fea1ff500f1238088ee0c5f07f2efca0662d1a72ddef0a55ff0ef2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking dkxltks25 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rect3`
[INFO] [stdout]   --> src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let rect3 = Rectangle { length: 40, width: 60 };
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_rect3`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]  --> src/main.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn area(&self) -> u32 { // &self는 Reactangle의 구현체 내부에 있기에 Ractangle임을 알 수 있다.
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rect3`
[INFO] [stdout]   --> src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let rect3 = Rectangle { length: 40, width: 60 };
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_rect3`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]  --> src/main.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn area(&self) -> u32 { // &self는 Reactangle의 구현체 내부에 있기에 Ractangle임을 알 수 있다.
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.76s
[INFO] running `Command { std: "docker" "inspect" "f9ea841a1fea1ff500f1238088ee0c5f07f2efca0662d1a72ddef0a55ff0ef2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9ea841a1fea1ff500f1238088ee0c5f07f2efca0662d1a72ddef0a55ff0ef2e", kill_on_drop: false }`
[INFO] [stdout] f9ea841a1fea1ff500f1238088ee0c5f07f2efca0662d1a72ddef0a55ff0ef2e