[INFO] fetching crate ash-tray 0.16.1...
[INFO] documenting ash-tray-0.16.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate ash-tray 0.16.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ash-tray 0.16.1 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 ash-tray 0.16.1
[INFO] finished tweaking crates.io crate ash-tray 0.16.1
[INFO] tweaked toml for crates.io crate ash-tray 0.16.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fd0a31ecc1aa78228519e99bc93a3934ad08e53a2712a2cf50b85ecd20979fc
[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" "9fd0a31ecc1aa78228519e99bc93a3934ad08e53a2712a2cf50b85ecd20979fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fd0a31ecc1aa78228519e99bc93a3934ad08e53a2712a2cf50b85ecd20979fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fd0a31ecc1aa78228519e99bc93a3934ad08e53a2712a2cf50b85ecd20979fc", kill_on_drop: false }`
[INFO] [stdout] 9fd0a31ecc1aa78228519e99bc93a3934ad08e53a2712a2cf50b85ecd20979fc
[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" "+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] 2d1abb1f7f59b38f5b87a95d681820706b10c979bfb0f554ef947f2adc86b5ec
[INFO] running `Command { std: "docker" "start" "-a" "2d1abb1f7f59b38f5b87a95d681820706b10c979bfb0f554ef947f2adc86b5ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libloading v0.6.3
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling fake-simd v0.1.2
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]     Checking glsl-to-spirv-macros v0.1.1
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling imgui-sys v0.3.0
[INFO] [stderr]    Compiling ash-tray v0.16.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking ash v0.30.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]    Compiling glsl-to-spirv v0.1.7
[INFO] [stderr] warning: In file included from wrapper/vma_lib.cpp:2:
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h: In member function 'virtual bool VmaBlockMetadata_Generic::Validate() const':
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h:8954:40: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
[INFO] [stderr] warning:  8954 |             VMA_VALIDATE(subAlloc.size >= VMA_DEBUG_MARGIN);
[INFO] [stderr] warning:       |                                        ^
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h:6324:38: note: in definition of macro 'VMA_VALIDATE'
[INFO] [stderr] warning:  6324 | #define VMA_VALIDATE(cond) do { if(!(cond)) { \
[INFO] [stderr] warning:       |                                      ^~~~
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h: In member function 'bool VmaBlockMetadata_Linear::CreateAllocationRequest_UpperAddress(uint32_t, uint32_t, VkDeviceSize, VkDeviceSize, VkDeviceSize, VmaSuballocationType, bool, uint32_t, VmaAllocationRequest*)':
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h:10839:25: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
[INFO] [stderr] warning: 10839 |         if(resultOffset < VMA_DEBUG_MARGIN)
[INFO] [stderr] warning:       |                         ^
[INFO] [stderr] warning: In file included from /usr/include/c++/9/cassert:44,
[INFO] [stderr] warning:                  from vendor/src/vk_mem_alloc.h:3978,
[INFO] [stderr] warning:                  from wrapper/vma_lib.cpp:2:
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h: In member function 'VkResult VmaDeviceMemoryBlock::WriteMagicValueAroundAllocation(VmaAllocator, VkDeviceSize, VkDeviceSize)':
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h:12329:28: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
[INFO] [stderr] warning: 12329 |     VMA_ASSERT(allocOffset >= VMA_DEBUG_MARGIN);
[INFO] [stderr] warning:       |                            ^
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h:12329:5: note: in expansion of macro 'VMA_ASSERT'
[INFO] [stderr] warning: 12329 |     VMA_ASSERT(allocOffset >= VMA_DEBUG_MARGIN);
[INFO] [stderr] warning:       |     ^~~~~~~~~~
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h: In member function 'VkResult VmaDeviceMemoryBlock::ValidateMagicValueAroundAllocation(VmaAllocator, VkDeviceSize, VkDeviceSize)':
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h:12349:28: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
[INFO] [stderr] warning: 12349 |     VMA_ASSERT(allocOffset >= VMA_DEBUG_MARGIN);
[INFO] [stderr] warning:       |                            ^
[INFO] [stderr] warning: vendor/src/vk_mem_alloc.h:12349:5: note: in expansion of macro 'VMA_ASSERT'
[INFO] [stderr] warning: 12349 |     VMA_ASSERT(allocOffset >= VMA_DEBUG_MARGIN);
[INFO] [stderr] warning:       |     ^~~~~~~~~~
[INFO] [stderr] warning: At global scope:
[INFO] [stderr] warning: cc1plus: warning: unrecognized command line option '-Wno-unused-private-field'
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[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-1.0.39/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="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=d8d2f982e43ecc61 -C extra-filename=-d8d2f982e43ecc61 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d3dc0cb999b3c41d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-75a4c566bf65e716.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-845c7fc62c4ec600.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" "2d1abb1f7f59b38f5b87a95d681820706b10c979bfb0f554ef947f2adc86b5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d1abb1f7f59b38f5b87a95d681820706b10c979bfb0f554ef947f2adc86b5ec", kill_on_drop: false }`
[INFO] [stdout] 2d1abb1f7f59b38f5b87a95d681820706b10c979bfb0f554ef947f2adc86b5ec