[INFO] fetching crate yagl 0.0.10...
[INFO] documenting yagl-0.0.10 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate yagl 0.0.10 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate yagl 0.0.10 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yagl 0.0.10
[INFO] finished tweaking crates.io crate yagl 0.0.10
[INFO] tweaked toml for crates.io crate yagl 0.0.10 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate yagl 0.0.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gfx-hal v0.5.2
[INFO] [stderr]   Downloaded gfx-backend-dx12 v0.5.7
[INFO] [stderr]   Downloaded gfx-backend-vulkan v0.5.8
[INFO] [stderr]   Downloaded a2d v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 911ea3c9a0df7445f603ad34112541d511dfb5e9abcaca777266eec77c54914c
[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" "911ea3c9a0df7445f603ad34112541d511dfb5e9abcaca777266eec77c54914c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "911ea3c9a0df7445f603ad34112541d511dfb5e9abcaca777266eec77c54914c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "911ea3c9a0df7445f603ad34112541d511dfb5e9abcaca777266eec77c54914c", kill_on_drop: false }`
[INFO] [stdout] 911ea3c9a0df7445f603ad34112541d511dfb5e9abcaca777266eec77c54914c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36390e2ba6c39af610d1a0990135cf9d8de6ad27fab313a469396931a99cb772
[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" "36390e2ba6c39af610d1a0990135cf9d8de6ad27fab313a469396931a99cb772", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]     Checking instant v0.1.4
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking deflate v0.8.4
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling peek-poke-derive v0.2.1
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]    Compiling shaderc-sys v0.6.2
[INFO] [stderr]     Checking ash v0.30.0
[INFO] [stderr]     Checking png v0.16.5
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking peek-poke v0.2.0
[INFO] [stderr]     Checking wgpu-types v0.5.1
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking libudev-sys v0.1.4
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking gfx-hal v0.5.2
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr] error: could not compile `futures-util`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name futures_util --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.5/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="async-await"' --cfg 'feature="async-await-macro"' --cfg 'feature="channel"' --cfg 'feature="futures-channel"' --cfg 'feature="futures-io"' --cfg 'feature="futures-macro"' --cfg 'feature="futures-sink"' --cfg 'feature="io"' --cfg 'feature="memchr"' --cfg 'feature="proc-macro-hack"' --cfg 'feature="proc-macro-nested"' --cfg 'feature="sink"' --cfg 'feature="slab"' --cfg 'feature="std"' -C metadata=439d36d836730524 -C extra-filename=-439d36d836730524 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern futures_channel=/opt/rustwide/target/debug/deps/libfutures_channel-a8242ad3bb67266e.rmeta --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-a6ecd8ebfa0c0f16.rmeta --extern futures_io=/opt/rustwide/target/debug/deps/libfutures_io-47532d7a055962ae.rmeta --extern futures_macro=/opt/rustwide/target/debug/deps/libfutures_macro-8126e1de976ea39a.so --extern futures_sink=/opt/rustwide/target/debug/deps/libfutures_sink-fba6f51385958687.rmeta --extern futures_task=/opt/rustwide/target/debug/deps/libfutures_task-6f2296b42195d96f.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-7c0aafbec5e5841d.rmeta --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-ac188bd205d44d9e.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-3d51a938ac21e975.rmeta --extern proc_macro_hack=/opt/rustwide/target/debug/deps/libproc_macro_hack-facc1f1031ecabe5.so --extern proc_macro_nested=/opt/rustwide/target/debug/deps/libproc_macro_nested-4e184443387fa366.rmeta --extern slab=/opt/rustwide/target/debug/deps/libslab-e0e0e35ef9a5003f.rmeta --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: System installed library not found.  Falling back to build from source
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "36390e2ba6c39af610d1a0990135cf9d8de6ad27fab313a469396931a99cb772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36390e2ba6c39af610d1a0990135cf9d8de6ad27fab313a469396931a99cb772", kill_on_drop: false }`
[INFO] [stdout] 36390e2ba6c39af610d1a0990135cf9d8de6ad27fab313a469396931a99cb772