[INFO] cloning repository https://github.com/SonicZentropy/zengine_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SonicZentropy/zengine_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonicZentropy%2Fzengine_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonicZentropy%2Fzengine_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9a0828afef463cebc5655aedd966039ae635bc8
[INFO] documenting SonicZentropy/zengine_rs against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSonicZentropy%2Fzengine_rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SonicZentropy/zengine_rs 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 git repo https://github.com/SonicZentropy/zengine_rs
[INFO] finished tweaking git repo https://github.com/SonicZentropy/zengine_rs
[INFO] tweaked toml for git repo https://github.com/SonicZentropy/zengine_rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/SonicZentropy/zengine_rs 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 0e3fc379f6029fb5a30d07b21ae677d73c0df3e16f02dde8c58e39fbc478c271
[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" "0e3fc379f6029fb5a30d07b21ae677d73c0df3e16f02dde8c58e39fbc478c271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e3fc379f6029fb5a30d07b21ae677d73c0df3e16f02dde8c58e39fbc478c271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e3fc379f6029fb5a30d07b21ae677d73c0df3e16f02dde8c58e39fbc478c271", kill_on_drop: false }`
[INFO] [stdout] 0e3fc379f6029fb5a30d07b21ae677d73c0df3e16f02dde8c58e39fbc478c271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1ee23790f7bf99e60aca3aa7494209666d84ad0fa65a19da91b07a570333cf0e
[INFO] running `Command { std: "docker" "start" "-a" "1ee23790f7bf99e60aca3aa7494209666d84ad0fa65a19da91b07a570333cf0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling arrayref v0.3.5
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.29
[INFO] [stderr]     Checking relevant v0.4.2
[INFO] [stderr]     Checking hibitset v0.6.2
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking x11-dl v2.18.4
[INFO] [stderr]     Checking crossbeam-utils v0.7.0
[INFO] [stderr]     Checking gfx-hal v0.4.1
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking regex v1.1.7
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ash v0.29.0
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking backtrace v0.3.32
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking fern v0.5.9
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling glsl-to-spirv v0.1.7
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]     Checking rendy-descriptor v0.5.1
[INFO] [stderr]     Checking rendy-memory v0.5.2
[INFO] [stderr]     Checking gfx-backend-empty v0.4.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking calloop v0.4.4
[INFO] [stderr]     Checking wayland-commons v0.23.6
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[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-0.15.39/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --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="extra-traits"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=c06b0d471da0d07a -C extra-filename=-c06b0d471da0d07a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e8a62c57741ef4cc.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e68cfbf388156dbc.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-8e68d9b5a310dbdb.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" "1ee23790f7bf99e60aca3aa7494209666d84ad0fa65a19da91b07a570333cf0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ee23790f7bf99e60aca3aa7494209666d84ad0fa65a19da91b07a570333cf0e", kill_on_drop: false }`
[INFO] [stdout] 1ee23790f7bf99e60aca3aa7494209666d84ad0fa65a19da91b07a570333cf0e