[INFO] cloning repository https://github.com/s3bc40/rust-rectangles
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/s3bc40/rust-rectangles" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bc40%2Frust-rectangles", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bc40%2Frust-rectangles'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1411a521d01857f3e37d438340c66b44bf3fd451
[INFO] checking s3bc40/rust-rectangles against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bc40%2Frust-rectangles" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/s3bc40/rust-rectangles
[INFO] finished tweaking git repo https://github.com/s3bc40/rust-rectangles
[INFO] tweaked toml for git repo https://github.com/s3bc40/rust-rectangles written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/s3bc40/rust-rectangles on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/s3bc40/rust-rectangles 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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47a16511bbf4c3c20031e5be7cb022dd48d4affc4eff7052d4828b38abbcaa36
[INFO] running `Command { std: "docker" "start" "-a" "47a16511bbf4c3c20031e5be7cb022dd48d4affc4eff7052d4828b38abbcaa36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47a16511bbf4c3c20031e5be7cb022dd48d4affc4eff7052d4828b38abbcaa36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47a16511bbf4c3c20031e5be7cb022dd48d4affc4eff7052d4828b38abbcaa36", kill_on_drop: false }`
[INFO] [stdout] 47a16511bbf4c3c20031e5be7cb022dd48d4affc4eff7052d4828b38abbcaa36
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30be367a8e3145d40289bf575186f1ec1d008946005aa2927e677df12a8ce251
[INFO] running `Command { std: "docker" "start" "-a" "30be367a8e3145d40289bf575186f1ec1d008946005aa2927e677df12a8ce251", kill_on_drop: false }`
[INFO] [stderr]     Checking rectangles v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `sq`
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let sq = Rectangle::square(3);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_sq`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sq`
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let sq = Rectangle::square(3);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_sq`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "30be367a8e3145d40289bf575186f1ec1d008946005aa2927e677df12a8ce251", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30be367a8e3145d40289bf575186f1ec1d008946005aa2927e677df12a8ce251", kill_on_drop: false }`
[INFO] [stdout] 30be367a8e3145d40289bf575186f1ec1d008946005aa2927e677df12a8ce251