[INFO] cloning repository https://github.com/ghost2-discord/ghost2-wrapper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ghost2-discord/ghost2-wrapper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghost2-discord%2Fghost2-wrapper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghost2-discord%2Fghost2-wrapper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f613732601857177425f6840b9954f410cb4cbdf
[INFO] testing ghost2-discord/ghost2-wrapper against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fghost2-discord%2Fghost2-wrapper" "/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/ghost2-discord/ghost2-wrapper 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/ghost2-discord/ghost2-wrapper
[INFO] finished tweaking git repo https://github.com/ghost2-discord/ghost2-wrapper
[INFO] tweaked toml for git repo https://github.com/ghost2-discord/ghost2-wrapper written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ghost2-discord/ghost2-wrapper 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 dwrote v0.9.0
[INFO] [stderr]   Downloaded iced_web v0.2.1
[INFO] [stderr]   Downloaded instant v0.1.6
[INFO] [stderr]   Downloaded svg_fmt v0.2.1
[INFO] [stderr]   Downloaded fern v0.5.9
[INFO] [stderr]   Downloaded font-kit v0.4.0
[INFO] [stderr]   Downloaded dodrio v0.1.0
[INFO] [stderr]   Downloaded iced_core v0.2.1
[INFO] [stderr]   Downloaded rendy-memory v0.5.2
[INFO] [stderr]   Downloaded wgpu-native v0.4.3
[INFO] [stderr]   Downloaded pin-project v0.4.23
[INFO] [stderr]   Downloaded metal v0.18.0
[INFO] [stderr]   Downloaded gfx-backend-empty v0.4.0
[INFO] [stderr]   Downloaded lyon_geom v0.14.1
[INFO] [stderr]   Downloaded chrono v0.4.15
[INFO] [stderr]   Downloaded xi-unicode v0.2.1
[INFO] [stderr]   Downloaded glyph_brush v0.6.3
[INFO] [stderr]   Downloaded storage-map v0.2.0
[INFO] [stderr]   Downloaded guillotiere v0.4.4
[INFO] [stderr]   Downloaded gfx-auxil v0.1.0
[INFO] [stderr]   Downloaded error-code v2.0.1
[INFO] [stderr]   Downloaded iced_futures v0.1.2
[INFO] [stderr]   Downloaded core-text v13.3.2
[INFO] [stderr]   Downloaded iced_native v0.2.2
[INFO] [stderr]   Downloaded gfx-hal v0.4.1
[INFO] [stderr]   Downloaded gfx-backend-dx11 v0.4.6
[INFO] [stderr]   Downloaded wgpu_glyph v0.7.0
[INFO] [stderr]   Downloaded clipboard-win v4.0.3
[INFO] [stderr]   Downloaded clipboard_macos v0.1.0
[INFO] [stderr]   Downloaded clipboard_wayland v0.1.1
[INFO] [stderr]   Downloaded wayland-protocols v0.27.0
[INFO] [stderr]   Downloaded wayland-cursor v0.27.0
[INFO] [stderr]   Downloaded glyph_brush_layout v0.1.9
[INFO] [stderr]   Downloaded euclid v0.20.14
[INFO] [stderr]   Downloaded iced_style v0.1.0
[INFO] [stderr]   Downloaded iced_wgpu v0.2.3
[INFO] [stderr]   Downloaded gfx-backend-metal v0.4.5
[INFO] [stderr]   Downloaded gfx-backend-vulkan v0.4.3
[INFO] [stderr]   Downloaded spirv_cross v0.16.0
[INFO] [stderr]   Downloaded rendy-descriptor v0.5.1
[INFO] [stderr]   Downloaded wayland-commons v0.27.0
[INFO] [stderr]   Downloaded hibitset v0.6.3
[INFO] [stderr]   Downloaded str-buf v1.0.2
[INFO] [stderr]   Downloaded servo-fontconfig-sys v4.0.9
[INFO] [stderr]   Downloaded zerocopy v0.2.8
[INFO] [stderr]   Downloaded gfx-backend-dx12 v0.4.3
[INFO] [stderr]   Downloaded pin-project-internal v0.4.23
[INFO] [stderr]   Downloaded wayland-client v0.27.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.1.4
[INFO] [stderr]   Downloaded wayland-sys v0.27.0
[INFO] [stderr]   Downloaded smithay-clipboard v0.5.2
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.11.0
[INFO] [stderr]   Downloaded wayland-scanner v0.27.0
[INFO] [stderr]   Downloaded iced v0.1.1
[INFO] [stderr]   Downloaded wgpu v0.4.0
[INFO] [stderr]   Downloaded clipboard_x11 v0.1.0
[INFO] [stderr]   Downloaded libloading v0.6.3
[INFO] [stderr]   Downloaded iced_winit v0.1.0
[INFO] [stderr]   Downloaded glam v0.8.7
[INFO] [stderr]   Downloaded window_clipboard v0.1.2
[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] 6dff1d3524ff591b9138945795ec77e58aaf1ad1df2ac3dec26b150ab01478a4
[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" "6dff1d3524ff591b9138945795ec77e58aaf1ad1df2ac3dec26b150ab01478a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dff1d3524ff591b9138945795ec77e58aaf1ad1df2ac3dec26b150ab01478a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dff1d3524ff591b9138945795ec77e58aaf1ad1df2ac3dec26b150ab01478a4", kill_on_drop: false }`
[INFO] [stdout] 6dff1d3524ff591b9138945795ec77e58aaf1ad1df2ac3dec26b150ab01478a4
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2aaa0cd25bffdbb903eeee8d1b779cb3203f615c31c0b15bce5012fb7d20041d
[INFO] running `Command { std: "docker" "start" "-a" "2aaa0cd25bffdbb903eeee8d1b779cb3203f615c31c0b15bce5012fb7d20041d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling wayland-sys v0.27.0
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling relevant v0.4.2
[INFO] [stderr]    Compiling wayland-scanner v0.27.0
[INFO] [stderr]    Compiling ordered-float v1.1.0
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling euclid v0.20.14
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling xcursor v0.3.2
[INFO] [stderr]    Compiling euclid v0.19.9
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling lyon_geom v0.14.1
[INFO] [stderr]    Compiling guillotiere v0.4.4
[INFO] [stderr]    Compiling wayland-client v0.27.0
[INFO] [stderr]    Compiling wayland-protocols v0.27.0
[INFO] [stderr]    Compiling lyon_path v0.14.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling freetype v0.4.1
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling ash v0.29.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling gfx-hal v0.4.1
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling chrono v0.4.15
[INFO] [stderr]    Compiling font-kit v0.4.0
[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-1.0.40/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --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"' --cfg 'feature="visit-mut"' -C metadata=c0ef759ae7ccc0c1 -C extra-filename=-c0ef759ae7ccc0c1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-cf9b08f4e998aec8.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-487a27ecc21424af.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" "2aaa0cd25bffdbb903eeee8d1b779cb3203f615c31c0b15bce5012fb7d20041d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aaa0cd25bffdbb903eeee8d1b779cb3203f615c31c0b15bce5012fb7d20041d", kill_on_drop: false }`
[INFO] [stdout] 2aaa0cd25bffdbb903eeee8d1b779cb3203f615c31c0b15bce5012fb7d20041d