[INFO] fetching crate metropolis 0.9.1...
[INFO] documenting metropolis-0.9.1 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate metropolis 0.9.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate metropolis 0.9.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metropolis 0.9.1
[INFO] finished tweaking crates.io crate metropolis 0.9.1
[INFO] tweaked toml for crates.io crate metropolis 0.9.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate metropolis 0.9.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cf4e110d47909c6c050abe26c35df449febfa98fd7836992ed80cf95bc30339
[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" "6cf4e110d47909c6c050abe26c35df449febfa98fd7836992ed80cf95bc30339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cf4e110d47909c6c050abe26c35df449febfa98fd7836992ed80cf95bc30339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cf4e110d47909c6c050abe26c35df449febfa98fd7836992ed80cf95bc30339", kill_on_drop: false }`
[INFO] [stdout] 6cf4e110d47909c6c050abe26c35df449febfa98fd7836992ed80cf95bc30339
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0028307be747d9df3f3e85d822681b15b785580095b3a7a534789d625d036d52
[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" "0028307be747d9df3f3e85d822681b15b785580095b3a7a534789d625d036d52", kill_on_drop: false }`
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]     Checking downcast-rs v1.1.0
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling vulkano v0.16.0
[INFO] [stderr]     Checking vk-sys v0.5.0
[INFO] [stderr]     Checking half v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling x11-dl v2.18.4
[INFO] [stderr]     Checking arrayvec v0.4.12
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking raw-window-handle v0.3.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking stb_truetype v0.3.0
[INFO] [stderr]     Checking rustc-hash v1.0.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling shaderc-sys v0.6.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking png v0.15.1
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking crossbeam v0.7.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking rusttype v0.8.1
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[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 --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.8/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=efbf347ff639fd8e -C extra-filename=-efbf347ff639fd8e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-5e15ca72fc1ea23b.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-9d85686b810bdd9e.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-dad6b49abdc0b26b.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] [stdout] error: linking with `cc` failed: signal: 9
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.0.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.1.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.10.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.11.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.12.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.13.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.14.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.15.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.2.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.3.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.4.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.5.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.6.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.7.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.8.rcgu.o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.build_script_build.1jd7svdx-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a" "/opt/rustwide/target/debug/build/wayland-protocols-f54383451b46ef3a/build_script_build-f54383451b46ef3a.13y1pxwfod0nrag0.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libwayland_scanner-97cff2c3285f5276.rlib" "/opt/rustwide/target/debug/deps/libxml-c3198c2757115d0d.rlib" "/opt/rustwide/target/debug/deps/libquote-87494921952c675b.rlib" "/opt/rustwide/target/debug/deps/libproc_macro2-97ca7e870c384a1c.rlib" "/opt/rustwide/target/debug/deps/libunicode_xid-be8312600acc46f1.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libproc_macro-8975dabc5e7e4cfc.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-f14aca24435a5414.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-48d342a8b48d1d01.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-14bc0820888c8eb3.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9cbd9e217bff06bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-31826136df98934e.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-075976a117c8fd5d.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-2d5cbedfbf17a011.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-0474372ff08c5319.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d437c34460d2315a.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-fb61ed1b8cc4de79.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-bf76d1b643bfc9f0.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a1b53aa7fddcf418.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-28585e57fac45c73.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-64801769bc15ab28.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-541997b56bb98660.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-cdea3c81adab3d12.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-cd9f15a39fb65cbc.rlib" "-Wl,-Bdynamic" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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" "0028307be747d9df3f3e85d822681b15b785580095b3a7a534789d625d036d52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0028307be747d9df3f3e85d822681b15b785580095b3a7a534789d625d036d52", kill_on_drop: false }`
[INFO] [stdout] 0028307be747d9df3f3e85d822681b15b785580095b3a7a534789d625d036d52
