[INFO] fetching crate task-rs 0.0.0...
[INFO] checking task-rs-0.0.0 against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] extracting crate task-rs 0.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate task-rs 0.0.0 on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate task-rs 0.0.0
[INFO] finished tweaking crates.io crate task-rs 0.0.0
[INFO] tweaked toml for crates.io crate task-rs 0.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clipboard_wayland v0.1.1
[INFO] [stderr]   Downloaded gfx-backend-empty v0.4.0
[INFO] [stderr]   Downloaded float-ord v0.2.0
[INFO] [stderr]   Downloaded window_clipboard v0.1.2
[INFO] [stderr]   Downloaded d3d12 v0.3.2
[INFO] [stderr]   Downloaded iced_web v0.2.1
[INFO] [stderr]   Downloaded dwrote v0.9.0
[INFO] [stderr]   Downloaded dodrio v0.1.0
[INFO] [stderr]   Downloaded font-kit v0.4.0
[INFO] [stderr]   Downloaded lyon_path v0.14.0
[INFO] [stderr]   Downloaded core-text v13.3.2
[INFO] [stderr]   Downloaded clipboard_macos v0.1.0
[INFO] [stderr]   Downloaded clipboard-win v4.0.3
[INFO] [stderr]   Downloaded svg_fmt v0.2.1
[INFO] [stderr]   Downloaded euclid v0.20.14
[INFO] [stderr]   Downloaded servo-fontconfig v0.4.0
[INFO] [stderr]   Downloaded gfx-backend-metal v0.4.5
[INFO] [stderr]   Downloaded zerocopy v0.2.8
[INFO] [stderr]   Downloaded iced_wgpu v0.2.3
[INFO] [stderr]   Downloaded iced_native v0.2.2
[INFO] [stderr]   Downloaded gfx-backend-vulkan v0.4.3
[INFO] [stderr]   Downloaded iced_style v0.1.0
[INFO] [stderr]   Downloaded rendy-memory v0.5.2
[INFO] [stderr]   Downloaded smithay-clipboard v0.5.2
[INFO] [stderr]   Downloaded colorful v0.2.1
[INFO] [stderr]   Downloaded wayland-protocols v0.27.0
[INFO] [stderr]   Downloaded relevant v0.4.2
[INFO] [stderr]   Downloaded gfx-backend-dx12 v0.4.3
[INFO] [stderr]   Downloaded spirv_cross v0.16.0
[INFO] [stderr]   Downloaded servo-freetype-sys v4.0.5
[INFO] [stderr]   Downloaded freetype v0.4.1
[INFO] [stderr]   Downloaded wgpu-native v0.4.3
[INFO] [stderr]   Downloaded ash v0.29.0
[INFO] [stderr]   Downloaded gfx-auxil v0.1.0
[INFO] [stderr]   Downloaded wgpu_glyph v0.7.0
[INFO] [stderr]   Downloaded gfx-hal v0.4.1
[INFO] [stderr]   Downloaded iced_futures v0.1.2
[INFO] [stderr]   Downloaded wayland-client v0.27.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.1.4
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.11.0
[INFO] [stderr]   Downloaded iced_core v0.2.1
[INFO] [stderr]   Downloaded lyon_geom v0.14.1
[INFO] [stderr]   Downloaded wayland-cursor v0.27.0
[INFO] [stderr]   Downloaded wgpu v0.4.0
[INFO] [stderr]   Downloaded wayland-scanner v0.27.0
[INFO] [stderr]   Downloaded xcursor v0.3.2
[INFO] [stderr]   Downloaded wayland-commons v0.27.0
[INFO] [stderr]   Downloaded rendy-descriptor v0.5.1
[INFO] [stderr]   Downloaded wayland-sys v0.27.0
[INFO] [stderr]   Downloaded iced_winit v0.1.0
[INFO] [stderr]   Downloaded expat-sys v2.1.6
[INFO] [stderr]   Downloaded guillotiere v0.4.4
[INFO] [stderr]   Downloaded glam v0.8.7
[INFO] [stderr]   Downloaded clipboard_x11 v0.1.0
[INFO] [stderr]   Downloaded servo-fontconfig-sys v4.0.9
[INFO] [stderr]   Downloaded gfx-backend-dx11 v0.4.6
[INFO] [stderr]   Downloaded iced v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 206793a6af073dc32ad2af587b407c44dda2cea9c8559cc917b38bdd35590480
[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" "206793a6af073dc32ad2af587b407c44dda2cea9c8559cc917b38bdd35590480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "206793a6af073dc32ad2af587b407c44dda2cea9c8559cc917b38bdd35590480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "206793a6af073dc32ad2af587b407c44dda2cea9c8559cc917b38bdd35590480", kill_on_drop: false }`
[INFO] [stdout] 206793a6af073dc32ad2af587b407c44dda2cea9c8559cc917b38bdd35590480
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=forbid" "-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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b2eac65932d4106d2af49b2ccbcf9fcd8344aeacc976582cf81f64cd32c5fd6
[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" "4b2eac65932d4106d2af49b2ccbcf9fcd8344aeacc976582cf81f64cd32c5fd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]     Checking futures-sink v0.3.7
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking futures-io v0.3.7
[INFO] [stderr]     Checking atom v0.3.6
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking colorful v0.2.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking iced_core v0.2.1
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]     Checking xi-unicode v0.2.1
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling glam v0.8.7
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking svg_fmt v0.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling wayland-sys v0.27.0
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking libloading v0.6.5
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking futures-task v0.3.7
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]     Checking iced_style v0.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]    Compiling wayland-scanner v0.27.0
[INFO] [stderr]     Checking relevant v0.4.2
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking euclid v0.20.14
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling wayland-client v0.27.0
[INFO] [stderr]    Compiling wayland-protocols v0.27.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking lyon_geom v0.14.1
[INFO] [stderr]     Checking gfx-hal v0.4.1
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ash v0.29.0
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking xcursor v0.3.2
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking lyon_path v0.14.0
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking glyph_brush_layout v0.1.9
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking font-kit v0.4.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols 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 /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=dfb13c9dc7134ff6 -C extra-filename=-dfb13c9dc7134ff6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ab33b97f38e6e831.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-476d26c939207289.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-e62bdf8dd5704851.rmeta --cap-lints allow --cap-lints=forbid --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` (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" "4b2eac65932d4106d2af49b2ccbcf9fcd8344aeacc976582cf81f64cd32c5fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b2eac65932d4106d2af49b2ccbcf9fcd8344aeacc976582cf81f64cd32c5fd6", kill_on_drop: false }`
[INFO] [stdout] 4b2eac65932d4106d2af49b2ccbcf9fcd8344aeacc976582cf81f64cd32c5fd6