[INFO] fetching crate wascc-host 0.14.0...
[INFO] testing wascc-host-0.14.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate wascc-host 0.14.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate wascc-host 0.14.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wascc-host 0.14.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate wascc-host 0.14.0
[INFO] tweaked toml for crates.io crate wascc-host 0.14.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate wascc-host 0.14.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fsio v0.1.3
[INFO] [stderr]   Downloaded rustc-demangle v0.1.17
[INFO] [stderr]   Downloaded combine v4.3.2
[INFO] [stderr]   Downloaded ctrlc v3.1.7
[INFO] [stderr]   Downloaded serde_yaml v0.8.13
[INFO] [stderr]   Downloaded nuid v0.2.1
[INFO] [stderr]   Downloaded protobuf v2.18.0
[INFO] [stderr]   Downloaded mockito v0.27.0
[INFO] [stderr]   Downloaded www-authenticate v0.3.0
[INFO] [stderr]   Downloaded libloading v0.6.4
[INFO] [stderr]   Downloaded zip v0.5.8
[INFO] [stderr]   Downloaded nats v0.8.1
[INFO] [stderr]   Downloaded oci-distribution v0.4.0
[INFO] [stderr]   Downloaded hyperx v0.13.2
[INFO] [stderr]   Downloaded prometheus v0.9.0
[INFO] [stderr]   Downloaded envmnt v0.8.4
[INFO] [stderr]   Downloaded syn v1.0.45
[INFO] [stderr]   Downloaded wasm3-provider v0.0.1
[INFO] [stderr]   Downloaded wasmtime-provider v0.0.1
[INFO] [stderr]   Downloaded async-executor v1.3.0
[INFO] [stderr]   Downloaded provider-archive v0.1.0
[INFO] [stderr]   Downloaded async-global-executor v1.4.2
[INFO] [stderr]   Downloaded async-trait v0.1.41
[INFO] [stderr]   Downloaded async-std v1.6.5
[INFO] [stderr]   Downloaded data-encoding v2.3.0
[INFO] [stderr]   Downloaded scroll_derive v0.10.3
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 85b743f42b0a56b852bba5750aaa86ecad46e4e00cea658f786e987d4e6e0bc7
[INFO] running `Command { std: "docker" "start" "-a" "85b743f42b0a56b852bba5750aaa86ecad46e4e00cea658f786e987d4e6e0bc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85b743f42b0a56b852bba5750aaa86ecad46e4e00cea658f786e987d4e6e0bc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85b743f42b0a56b852bba5750aaa86ecad46e4e00cea658f786e987d4e6e0bc7", kill_on_drop: false }`
[INFO] [stdout] 85b743f42b0a56b852bba5750aaa86ecad46e4e00cea658f786e987d4e6e0bc7
[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" "RUSTFLAGS=--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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c80bb78b800e8c66e12b5328bc833618f190fea803b778b5d9cc287924ee49eb
[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" "c80bb78b800e8c66e12b5328bc833618f190fea803b778b5d9cc287924ee49eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling regex-syntax v0.6.20
[INFO] [stderr]    Compiling rustc-demangle v0.1.17
[INFO] [stderr]    Compiling futures-io v0.3.6
[INFO] [stderr]    Compiling object v0.21.1
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]    Compiling data-encoding v2.3.0
[INFO] [stderr]    Compiling parity-wasm v0.42.1
[INFO] [stderr]    Compiling rayon v1.4.1
[INFO] [stderr]    Compiling libloading v0.6.4
[INFO] [stderr]    Compiling wast v26.0.1
[INFO] [stderr]    Compiling futures-channel v0.3.6
[INFO] [stderr]    Compiling futures-task v0.3.6
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling aho-corasick v0.7.14
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rmp v0.8.9
[INFO] [stderr]    Compiling sha2 v0.9.1
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling errno v0.2.6
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling region v2.2.0
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling socket2 v0.3.15
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling rayon-core v1.8.1
[INFO] [stderr]    Compiling directories v2.0.2
[INFO] [stderr]    Compiling regex v1.4.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling backtrace v0.3.53
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling nuid v0.2.1
[INFO] [stderr]    Compiling wat v1.0.27
[INFO] [stderr]    Compiling chrono-humanize v0.1.1
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling wasmtime-runtime v0.19.0
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling ring v0.16.15
[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-1.0.45/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --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="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=52196dc586520049 -C extra-filename=-52196dc586520049 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fc674c02767ecd53.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-1ba06248e155a417.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-5ee0227a60781e0f.rmeta --cap-lints allow --cap-lints=warn --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" "c80bb78b800e8c66e12b5328bc833618f190fea803b778b5d9cc287924ee49eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c80bb78b800e8c66e12b5328bc833618f190fea803b778b5d9cc287924ee49eb", kill_on_drop: false }`
[INFO] [stdout] c80bb78b800e8c66e12b5328bc833618f190fea803b778b5d9cc287924ee49eb