[INFO] cloning repository https://github.com/CRHarding/simple-rust-area
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CRHarding/simple-rust-area" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCRHarding%2Fsimple-rust-area", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCRHarding%2Fsimple-rust-area'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e09266cd0288b46cdf8be29a1e2e8e58bfcff1d4
[INFO] checking CRHarding/simple-rust-area against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCRHarding%2Fsimple-rust-area" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CRHarding/simple-rust-area on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CRHarding/simple-rust-area
[INFO] finished tweaking git repo https://github.com/CRHarding/simple-rust-area
[INFO] tweaked toml for git repo https://github.com/CRHarding/simple-rust-area written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/CRHarding/simple-rust-area already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 566df3d91c16a744802a4742925845cb9f3e1d924a090cf7cb3172c9bcb6c1cf
[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" "566df3d91c16a744802a4742925845cb9f3e1d924a090cf7cb3172c9bcb6c1cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "566df3d91c16a744802a4742925845cb9f3e1d924a090cf7cb3172c9bcb6c1cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "566df3d91c16a744802a4742925845cb9f3e1d924a090cf7cb3172c9bcb6c1cf", kill_on_drop: false }`
[INFO] [stdout] 566df3d91c16a744802a4742925845cb9f3e1d924a090cf7cb3172c9bcb6c1cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--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] f7f21c4087093833bf5b947fa379f4bd5cac1e8b46e9297b7c997246f05b6fd0
[INFO] running `Command { std: "docker" "start" "-a" "f7f21c4087093833bf5b947fa379f4bd5cac1e8b46e9297b7c997246f05b6fd0", 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:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     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: associated function is never used: `area`
[INFO] [stdout]  --> src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn area(&self) -> u32 {
[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: unused variable: `sq`
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     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: associated function is never used: `area`
[INFO] [stdout]  --> src/main.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn area(&self) -> u32 {
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "f7f21c4087093833bf5b947fa379f4bd5cac1e8b46e9297b7c997246f05b6fd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7f21c4087093833bf5b947fa379f4bd5cac1e8b46e9297b7c997246f05b6fd0", kill_on_drop: false }`
[INFO] [stdout] f7f21c4087093833bf5b947fa379f4bd5cac1e8b46e9297b7c997246f05b6fd0