[INFO] cloning repository https://github.com/nagy135/rusty-ants
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nagy135/rusty-ants" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnagy135%2Frusty-ants", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnagy135%2Frusty-ants'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a18f75d3839664778c989c42880d6c30e4fa2cb6
[INFO] testing nagy135/rusty-ants against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnagy135%2Frusty-ants" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nagy135/rusty-ants 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/nagy135/rusty-ants
[INFO] finished tweaking git repo https://github.com/nagy135/rusty-ants
[INFO] tweaked toml for git repo https://github.com/nagy135/rusty-ants written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/nagy135/rusty-ants 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] cac095fff7952628cd658ad11cf596cc5f44132b182788c29e04976acbf7ca26
[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" "cac095fff7952628cd658ad11cf596cc5f44132b182788c29e04976acbf7ca26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cac095fff7952628cd658ad11cf596cc5f44132b182788c29e04976acbf7ca26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac095fff7952628cd658ad11cf596cc5f44132b182788c29e04976acbf7ca26", kill_on_drop: false }`
[INFO] [stdout] cac095fff7952628cd658ad11cf596cc5f44132b182788c29e04976acbf7ca26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 5f91d35b385c67e47339018339d8ac57a81969b0959a6a8a885c9f004b7a470c
[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" "5f91d35b385c67e47339018339d8ac57a81969b0959a6a8a885c9f004b7a470c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]    Compiling syn v1.0.68
[INFO] [stderr]    Compiling ttf-parser v0.12.0
[INFO] [stderr]    Compiling iced_core v0.3.0
[INFO] [stderr]    Compiling winit v0.23.0
[INFO] [stderr]    Compiling tokio v0.3.7
[INFO] [stderr]    Compiling glam v0.10.2
[INFO] [stderr]    Compiling mpg123-sys v0.6.0
[INFO] [stderr]    Compiling out123-sys v0.5.0
[INFO] [stderr]    Compiling wayland-sys v0.28.5
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]    Compiling wayland-scanner v0.28.5
[INFO] [stderr]    Compiling euclid v0.22.2
[INFO] [stderr]    Compiling sid v0.6.1
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling ordered-float v2.1.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling iced_style v0.2.0
[INFO] [stderr]    Compiling lyon_geom v0.16.2
[INFO] [stderr]    Compiling guillotiere v0.6.0
[INFO] [stderr]    Compiling wayland-client v0.28.5
[INFO] [stderr]    Compiling wayland-protocols v0.28.5
[INFO] [stderr]    Compiling pathfinder_geometry v0.5.1
[INFO] [stderr]    Compiling lyon_path v0.16.2
[INFO] [stderr]    Compiling owned_ttf_parser v0.12.0
[INFO] [stderr]    Compiling ab_glyph v0.2.10
[INFO] [stderr]    Compiling xcursor v0.3.3
[INFO] [stderr]    Compiling lyon_tessellation v0.16.2
[INFO] [stderr]    Compiling lyon_algorithms v0.16.0
[INFO] [stderr]    Compiling glyph_brush_layout v0.2.1
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling memmap2 v0.1.0
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling gethostname v0.2.1
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling gfx-hal v0.6.0
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling lyon v0.16.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.68/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 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=3525ed61796ebbc9 -C extra-filename=-3525ed61796ebbc9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b2e96a1d7de1897d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-adf9642750302e9c.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-4f4df54432f3a5d3.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (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" "5f91d35b385c67e47339018339d8ac57a81969b0959a6a8a885c9f004b7a470c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f91d35b385c67e47339018339d8ac57a81969b0959a6a8a885c9f004b7a470c", kill_on_drop: false }`
[INFO] [stdout] 5f91d35b385c67e47339018339d8ac57a81969b0959a6a8a885c9f004b7a470c