[INFO] cloning repository https://github.com/gifnksm/othello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gifnksm/othello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgifnksm%2Fothello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgifnksm%2Fothello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b403ec171336bdf967c010d7f12d1a894d3e647
[INFO] testing gifnksm/othello against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgifnksm%2Fothello" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gifnksm/othello on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gifnksm/othello
[INFO] finished tweaking git repo https://github.com/gifnksm/othello
[INFO] tweaked toml for git repo https://github.com/gifnksm/othello written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/gifnksm/othello already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.12.3
[INFO] [stderr]   Downloaded walkdir v2.3.2
[INFO] [stderr]   Downloaded x11-clipboard v0.5.1
[INFO] [stderr]   Downloaded smithay-clipboard v0.4.0
[INFO] [stderr]   Downloaded conrod_derive v0.72.0
[INFO] [stderr]   Downloaded daggy v0.5.0
[INFO] [stderr]   Downloaded conrod_core v0.72.0
[INFO] [stderr]   Downloaded pistoncore-input v1.0.0
[INFO] [stderr]   Downloaded object v0.24.0
[INFO] [stderr]   Downloaded backtrace v0.3.59
[INFO] [stderr]   Downloaded glutin v0.25.1
[INFO] [stderr]   Downloaded piston-float v1.0.0
[INFO] [stderr]   Downloaded wayland-scanner v0.28.5
[INFO] [stderr]   Downloaded wayland-sys v0.28.5
[INFO] [stderr]   Downloaded wayland-protocols v0.28.5
[INFO] [stderr]   Downloaded xcb v0.9.0
[INFO] [stderr]   Downloaded wayland-commons v0.28.5
[INFO] [stderr]   Downloaded gimli v0.24.0
[INFO] [stderr]   Downloaded wayland-client v0.28.5
[INFO] [stderr]   Downloaded glium v0.28.0
[INFO] [stderr]   Downloaded ttf-noto-sans v0.1.1
[INFO] [stderr]   Downloaded rustc-demangle v0.1.19
[INFO] [stderr]   Downloaded wayland-egl v0.28.5
[INFO] [stderr]   Downloaded vecmath v1.0.0
[INFO] [stderr]   Downloaded wayland-cursor v0.28.5
[INFO] [stderr]   Downloaded dlib v0.5.0
[INFO] [stderr]   Downloaded petgraph v0.4.13
[INFO] [stderr]   Downloaded conrod_winit v0.72.0
[INFO] [stderr]   Downloaded copypasta v0.6.3
[INFO] [stderr]   Downloaded addr2line v0.15.1
[INFO] [stderr]   Downloaded piston-viewport v1.0.0
[INFO] [stderr]   Downloaded takeable-option v0.5.0
[INFO] [stderr]   Downloaded nom v6.1.2
[INFO] [stderr]   Downloaded conrod_glium v0.72.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f77ad784a337d2ac22feca6cdf2792aa1e9acb230fe0130c9baf8cf985755015
[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" "f77ad784a337d2ac22feca6cdf2792aa1e9acb230fe0130c9baf8cf985755015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f77ad784a337d2ac22feca6cdf2792aa1e9acb230fe0130c9baf8cf985755015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f77ad784a337d2ac22feca6cdf2792aa1e9acb230fe0130c9baf8cf985755015", kill_on_drop: false }`
[INFO] [stdout] f77ad784a337d2ac22feca6cdf2792aa1e9acb230fe0130c9baf8cf985755015
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ccdae09169b33da64a2d0689fa342f96fe9c0290ab99449e8716fc149a8f37e
[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" "9ccdae09169b33da64a2d0689fa342f96fe9c0290ab99449e8716fc149a8f37e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling takeable-option v0.5.0
[INFO] [stderr]    Compiling ttf-noto-sans v0.1.1
[INFO] [stderr]    Compiling conrod_winit v0.72.0
[INFO] [stderr]    Compiling wayland-sys v0.28.5
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling memmap2 v0.1.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling wayland-scanner v0.28.5
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling glium v0.28.0
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling wayland-commons v0.28.5
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling wayland-client v0.28.5
[INFO] [stderr]    Compiling wayland-protocols v0.28.5
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.18.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=ae6174f5a89b0dac -C extra-filename=-ae6174f5a89b0dac --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-117d41ac256572da.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-4dc40f94662accb2.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-cb41864e85e35c76.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9ccdae09169b33da64a2d0689fa342f96fe9c0290ab99449e8716fc149a8f37e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ccdae09169b33da64a2d0689fa342f96fe9c0290ab99449e8716fc149a8f37e", kill_on_drop: false }`
[INFO] [stdout] 9ccdae09169b33da64a2d0689fa342f96fe9c0290ab99449e8716fc149a8f37e