[INFO] fetching crate microwave 0.10.0...
[INFO] testing microwave-0.10.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate microwave 0.10.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate microwave 0.10.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate microwave 0.10.0
[INFO] finished tweaking crates.io crate microwave 0.10.0
[INFO] tweaked toml for crates.io crate microwave 0.10.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate microwave 0.10.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef8923a9ebe494134888b00064ea12d5fe1f0717026394fe7b76d17eb1efda7e
[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" "ef8923a9ebe494134888b00064ea12d5fe1f0717026394fe7b76d17eb1efda7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef8923a9ebe494134888b00064ea12d5fe1f0717026394fe7b76d17eb1efda7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef8923a9ebe494134888b00064ea12d5fe1f0717026394fe7b76d17eb1efda7e", kill_on_drop: false }`
[INFO] [stdout] ef8923a9ebe494134888b00064ea12d5fe1f0717026394fe7b76d17eb1efda7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "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] ff059b75e92074ac37ccea03543cbaed4cbd1ad9af4d65627111dd9cda78ef22
[INFO] running `Command { std: "docker" "start" "-a" "ff059b75e92074ac37ccea03543cbaed4cbd1ad9af4d65627111dd9cda78ef22", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling libloading v0.6.3
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling rayon-core v1.8.0
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling atom v0.3.5
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling color_quant v1.0.1
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling colorful v0.2.1
[INFO] [stderr]    Compiling piston-float v0.3.0
[INFO] [stderr]    Compiling chunked_transfer v1.2.0
[INFO] [stderr]    Compiling instant v0.1.6
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling copyless v0.1.5
[INFO] [stderr]    Compiling fluidlite-sys v0.1.3
[INFO] [stderr]    Compiling object v0.20.0
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]    Compiling cpal v0.11.0
[INFO] [stderr]    Compiling bytemuck v1.4.0
[INFO] [stderr]    Compiling conrod_winit v0.69.0
[INFO] [stderr]    Compiling find_folder v0.3.0
[INFO] [stderr]    Compiling sample v0.10.0
[INFO] [stderr]    Compiling tune v0.14.0
[INFO] [stderr]    Compiling memalloc v0.1.0
[INFO] [stderr]    Compiling notosans v0.1.0
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling inflate v0.3.4
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling qstring v0.7.2
[INFO] [stderr]    Compiling hibitset v0.6.3
[INFO] [stderr]    Compiling gif v0.9.2
[INFO] [stderr]    Compiling gif v0.10.3
[INFO] [stderr]    Compiling piston-viewport v0.5.0
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling miniz_oxide v0.4.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling tiff v0.5.0
[INFO] [stderr]    Compiling relevant v0.4.2
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling crossbeam-channel v0.4.3
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling daggy v0.5.0
[INFO] [stderr]    Compiling daggy v0.6.0
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling png v0.16.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.1.0
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling euclid v0.20.14
[INFO] [stderr]    Compiling sid v0.6.1
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling pennereq v0.3.1
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling gfx-hal v0.4.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling ash v0.29.0
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling cookie v0.12.0
[INFO] [stderr]    Compiling tar v0.4.29
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.44/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="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=6e7e35e705d691eb -C extra-filename=-6e7e35e705d691eb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-97ca7e870c384a1c.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-87494921952c675b.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-be8312600acc46f1.rmeta --cap-lints allow --cap-lints=warn --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path --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" "ff059b75e92074ac37ccea03543cbaed4cbd1ad9af4d65627111dd9cda78ef22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff059b75e92074ac37ccea03543cbaed4cbd1ad9af4d65627111dd9cda78ef22", kill_on_drop: false }`
[INFO] [stdout] ff059b75e92074ac37ccea03543cbaed4cbd1ad9af4d65627111dd9cda78ef22
