[INFO] cloning repository https://github.com/turboMaCk/sierpinski_triangle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/turboMaCk/sierpinski_triangle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FturboMaCk%2Fsierpinski_triangle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FturboMaCk%2Fsierpinski_triangle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15d16778c19b145bd58251d64f22be8255a47455
[INFO] checking turboMaCk/sierpinski_triangle against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FturboMaCk%2Fsierpinski_triangle" "/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/turboMaCk/sierpinski_triangle on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/turboMaCk/sierpinski_triangle
[INFO] finished tweaking git repo https://github.com/turboMaCk/sierpinski_triangle
[INFO] tweaked toml for git repo https://github.com/turboMaCk/sierpinski_triangle written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/turboMaCk/sierpinski_triangle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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" "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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 4087b0f654865a7ada8c32221b7ef1c187c5ea4997b39da7ff2112538e23f76a
[INFO] running `Command { std: "docker" "start" "-a" "4087b0f654865a7ada8c32221b7ef1c187c5ea4997b39da7ff2112538e23f76a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4087b0f654865a7ada8c32221b7ef1c187c5ea4997b39da7ff2112538e23f76a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4087b0f654865a7ada8c32221b7ef1c187c5ea4997b39da7ff2112538e23f76a", kill_on_drop: false }`
[INFO] [stdout] 4087b0f654865a7ada8c32221b7ef1c187c5ea4997b39da7ff2112538e23f76a
[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" "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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 7629f64cc3895059561307f7ccc562819743d91770c2f3b7b9f752c9d04a9cb7
[INFO] running `Command { std: "docker" "start" "-a" "7629f64cc3895059561307f7ccc562819743d91770c2f3b7b9f752c9d04a9cb7", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.26
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.7
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking deflate v0.7.13
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking png v0.8.0
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.14.0
[INFO] [stderr]     Checking triangle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.78s
[INFO] running `Command { std: "docker" "inspect" "7629f64cc3895059561307f7ccc562819743d91770c2f3b7b9f752c9d04a9cb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7629f64cc3895059561307f7ccc562819743d91770c2f3b7b9f752c9d04a9cb7", kill_on_drop: false }`
[INFO] [stdout] 7629f64cc3895059561307f7ccc562819743d91770c2f3b7b9f752c9d04a9cb7