[INFO] cloning repository https://github.com/mrdev023/VULKAN_RUST_LEARNING
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrdev023/VULKAN_RUST_LEARNING" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrdev023%2FVULKAN_RUST_LEARNING", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrdev023%2FVULKAN_RUST_LEARNING'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a11df3a350231b10496b1df30fb840ce6bee4aec
[INFO] documenting mrdev023/VULKAN_RUST_LEARNING against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrdev023%2FVULKAN_RUST_LEARNING" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrdev023/VULKAN_RUST_LEARNING 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 git repo https://github.com/mrdev023/VULKAN_RUST_LEARNING
[INFO] finished tweaking git repo https://github.com/mrdev023/VULKAN_RUST_LEARNING
[INFO] tweaked toml for git repo https://github.com/mrdev023/VULKAN_RUST_LEARNING written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mrdev023/VULKAN_RUST_LEARNING 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shaderc v0.5.1
[INFO] [stderr]   Downloaded shaderc-sys v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3a267cd59862ae694ab469756bf56cbb834776e86db255fed62839cc91572e0d
[INFO] running `Command { std: "docker" "start" "-a" "3a267cd59862ae694ab469756bf56cbb834776e86db255fed62839cc91572e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a267cd59862ae694ab469756bf56cbb834776e86db255fed62839cc91572e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a267cd59862ae694ab469756bf56cbb834776e86db255fed62839cc91572e0d", kill_on_drop: false }`
[INFO] [stdout] 3a267cd59862ae694ab469756bf56cbb834776e86db255fed62839cc91572e0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e64f8535466c5294c53ba43c426f4e4427f5662ea879742fd7785e2e2da9b4df
[INFO] running `Command { std: "docker" "start" "-a" "e64f8535466c5294c53ba43c426f4e4427f5662ea879742fd7785e2e2da9b4df", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]     Checking downcast-rs v1.0.4
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling vulkano v0.13.0
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]     Checking half v1.3.0
[INFO] [stderr]     Checking vk-sys v0.4.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]     Checking walkdir v2.2.8
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling shaderc-sys v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking crossbeam v0.7.1
[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]     Checking rusttype v0.7.7
[INFO] [stderr]     Checking andrew v0.2.1
[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 --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="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=c33decb6057a9e6a -C extra-filename=-c33decb6057a9e6a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-1c8cd06d03ec2d01.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-179b18ceb2cbc452.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-de12218e15042935.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] 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: Pre-built library not found.  Falling back to from-source build
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e64f8535466c5294c53ba43c426f4e4427f5662ea879742fd7785e2e2da9b4df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e64f8535466c5294c53ba43c426f4e4427f5662ea879742fd7785e2e2da9b4df", kill_on_drop: false }`
[INFO] [stdout] e64f8535466c5294c53ba43c426f4e4427f5662ea879742fd7785e2e2da9b4df