[INFO] fetching crate e-nguyen 0.1.2...
[INFO] documenting e-nguyen-0.1.2 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate e-nguyen 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate e-nguyen 0.1.2 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate e-nguyen 0.1.2
[INFO] finished tweaking crates.io crate e-nguyen 0.1.2
[INFO] tweaked toml for crates.io crate e-nguyen 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1026c9808a055600e360225fd66f2ae40f6de47c3643518ebaeee2f791f24dcf
[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" "1026c9808a055600e360225fd66f2ae40f6de47c3643518ebaeee2f791f24dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1026c9808a055600e360225fd66f2ae40f6de47c3643518ebaeee2f791f24dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1026c9808a055600e360225fd66f2ae40f6de47c3643518ebaeee2f791f24dcf", kill_on_drop: false }`
[INFO] [stdout] 1026c9808a055600e360225fd66f2ae40f6de47c3643518ebaeee2f791f24dcf
[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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e86d056275aea63492c65f1879ce1edac67754ed7f40fc63dde503a81ce9a90
[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" "7e86d056275aea63492c65f1879ce1edac67754ed7f40fc63dde503a81ce9a90", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling vulkano v0.11.1
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking vk-sys v0.4.0
[INFO] [stderr]    Compiling vulkano-glyph v0.4.0
[INFO] [stderr]     Checking strength_reduce v0.2.3
[INFO] [stderr]     Checking transpose v0.1.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]    Compiling libpulse-sys v1.19.1
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking x11-dl v2.18.5
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]    Compiling shaderc v0.3.16
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking rustfft v3.0.1
[INFO] [stderr]     Checking crossbeam v0.5.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[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 --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="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=ef5d93707ab3741c -C extra-filename=-ef5d93707ab3741c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-1b603436233589f0.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-ffc17673ba1adfd6.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-f4af8e7ee48fb608.rmeta --cap-lints allow --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" "7e86d056275aea63492c65f1879ce1edac67754ed7f40fc63dde503a81ce9a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e86d056275aea63492c65f1879ce1edac67754ed7f40fc63dde503a81ce9a90", kill_on_drop: false }`
[INFO] [stdout] 7e86d056275aea63492c65f1879ce1edac67754ed7f40fc63dde503a81ce9a90
