[INFO] fetching crate gboxide 0.2.2...
[INFO] documenting gboxide-0.2.2 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate gboxide 0.2.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate gboxide 0.2.2 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gboxide 0.2.2
[INFO] finished tweaking crates.io crate gboxide 0.2.2
[INFO] tweaked toml for crates.io crate gboxide 0.2.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate gboxide 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2641c22d741dda828cad9da9799ab2eae51d202fd16364033ca2ae854591d1ca
[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" "2641c22d741dda828cad9da9799ab2eae51d202fd16364033ca2ae854591d1ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2641c22d741dda828cad9da9799ab2eae51d202fd16364033ca2ae854591d1ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2641c22d741dda828cad9da9799ab2eae51d202fd16364033ca2ae854591d1ca", kill_on_drop: false }`
[INFO] [stdout] 2641c22d741dda828cad9da9799ab2eae51d202fd16364033ca2ae854591d1ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "RUSTDOCFLAGS=--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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d291ea46c8df8aab7805ead6609bd9652c7f7165fbbde4f19b8f1d7ff9043cbd
[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" "d291ea46c8df8aab7805ead6609bd9652c7f7165fbbde4f19b8f1d7ff9043cbd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]     Checking colorful v0.2.1
[INFO] [stderr]     Checking downcast-rs v1.1.0
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]     Checking copyless v0.1.4
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking instant v0.1.2
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling imgui-sys v0.2.0
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling x11-dl v2.18.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking hibitset v0.6.2
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]     Checking stb_truetype v0.3.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking raw-window-handle v0.3.0
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking gfx-hal v0.4.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking relevant v0.4.2
[INFO] [stderr]     Checking ash v0.29.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]    Compiling zerocopy-derive v0.1.4
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]     Checking rusttype v0.8.1
[INFO] [stderr]    Compiling glsl-to-spirv v0.1.7
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking zerocopy v0.2.8
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]     Checking calloop v0.4.4
[INFO] [stderr]     Checking wayland-commons v0.23.6
[INFO] [stderr]     Checking rendy-memory v0.5.0
[INFO] [stderr]     Checking rendy-descriptor v0.5.0
[INFO] [stderr]     Checking gfx-backend-empty 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-1.0.5/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=816ddcc39e31b142 -C extra-filename=-816ddcc39e31b142 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-02874a05bd6eac4d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-167a85b1ab3e1458.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-1d55ac1efe417118.rmeta --cap-lints allow --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" "d291ea46c8df8aab7805ead6609bd9652c7f7165fbbde4f19b8f1d7ff9043cbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d291ea46c8df8aab7805ead6609bd9652c7f7165fbbde4f19b8f1d7ff9043cbd", kill_on_drop: false }`
[INFO] [stdout] d291ea46c8df8aab7805ead6609bd9652c7f7165fbbde4f19b8f1d7ff9043cbd