[INFO] cloning repository https://github.com/lsh/line-exercises-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lsh/line-exercises-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsh%2Fline-exercises-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsh%2Fline-exercises-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 449bd90c7a925eb477a81534983375fc620c4700
[INFO] testing lsh/line-exercises-rs against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flsh%2Fline-exercises-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lsh/line-exercises-rs on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lsh/line-exercises-rs
[INFO] finished tweaking git repo https://github.com/lsh/line-exercises-rs
[INFO] tweaked toml for git repo https://github.com/lsh/line-exercises-rs written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/lsh/line-exercises-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20ca78919cc87c9a2aea5ad04c54ac5a95872cfb5562802baaf08788b6de3762
[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" "20ca78919cc87c9a2aea5ad04c54ac5a95872cfb5562802baaf08788b6de3762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20ca78919cc87c9a2aea5ad04c54ac5a95872cfb5562802baaf08788b6de3762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20ca78919cc87c9a2aea5ad04c54ac5a95872cfb5562802baaf08788b6de3762", kill_on_drop: false }`
[INFO] [stdout] 20ca78919cc87c9a2aea5ad04c54ac5a95872cfb5562802baaf08788b6de3762
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--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] f36fb8ad161094363a751116f9b4d933d91742c3dba420d0ae21748cfcaee0f9
[INFO] running `Command { std: "docker" "start" "-a" "f36fb8ad161094363a751116f9b4d933d91742c3dba420d0ae21748cfcaee0f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling drm-fourcc v2.2.0
[INFO] [stderr]    Compiling khronos-egl v4.1.0
[INFO] [stderr]    Compiling renderdoc-sys v0.7.1
[INFO] [stderr]    Compiling piston-float v1.0.0
[INFO] [stderr]    Compiling profiling v1.0.3
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling notosans v0.1.0
[INFO] [stderr]    Compiling conrod_winit v0.74.0
[INFO] [stderr]    Compiling svg v0.10.0
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling wgpu-types v0.9.0
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling wgpu-core v0.9.2
[INFO] [stderr]    Compiling ash v0.32.1
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling gpu-alloc v0.4.7
[INFO] [stderr]    Compiling piston-viewport v1.0.0
[INFO] [stderr]    Compiling gpu-descriptor v0.1.1
[INFO] [stderr]    Compiling gfx-renderdoc v0.1.0
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling euclid v0.20.14
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling pennereq v0.3.1
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling daggy v0.5.0
[INFO] [stderr]    Compiling daggy v0.6.0
[INFO] [stderr]    Compiling lyon_geom v0.15.3
[INFO] [stderr]    Compiling rose_tree v0.2.0
[INFO] [stderr]    Compiling lyon_path v0.15.2
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]    Compiling lyon_tessellation v0.15.9
[INFO] [stderr]    Compiling lyon_algorithms v0.15.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling memmap2 v0.1.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling lyon v0.15.9
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling mio-misc v1.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling wayland-commons v0.23.6
[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-1.0.76/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,future-incompat --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=481795f428bb2955 -C extra-filename=-481795f428bb2955 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ef1133de66567a1e.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-42c799e0c00cca10.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-aeb18ec3bc792598.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" "f36fb8ad161094363a751116f9b4d933d91742c3dba420d0ae21748cfcaee0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f36fb8ad161094363a751116f9b4d933d91742c3dba420d0ae21748cfcaee0f9", kill_on_drop: false }`
[INFO] [stdout] f36fb8ad161094363a751116f9b4d933d91742c3dba420d0ae21748cfcaee0f9