[INFO] fetching crate elvis-backend 0.1.1...
[INFO] checking elvis-backend-0.1.1 against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] extracting crate elvis-backend 0.1.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate elvis-backend 0.1.1 on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate elvis-backend 0.1.1
[INFO] finished tweaking crates.io crate elvis-backend 0.1.1
[INFO] tweaked toml for crates.io crate elvis-backend 0.1.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05e2829e7fc2d37920e5dd5f9506b83e22801f97b4ae6d729d2bd2bc26b6ddf2
[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" "05e2829e7fc2d37920e5dd5f9506b83e22801f97b4ae6d729d2bd2bc26b6ddf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05e2829e7fc2d37920e5dd5f9506b83e22801f97b4ae6d729d2bd2bc26b6ddf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05e2829e7fc2d37920e5dd5f9506b83e22801f97b4ae6d729d2bd2bc26b6ddf2", kill_on_drop: false }`
[INFO] [stdout] 05e2829e7fc2d37920e5dd5f9506b83e22801f97b4ae6d729d2bd2bc26b6ddf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "check" "--frozen" "--all" "--all-targets" "--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] acb49741a179d4ea48896fd4c7b486b78861d54f98a49377853edce9619acd72
[INFO] running `Command { std: "docker" "start" "-a" "acb49741a179d4ea48896fd4c7b486b78861d54f98a49377853edce9619acd72", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.20
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking wasmparser v0.59.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking id-arena v2.2.1
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking wit-schema-version v0.1.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking urlencoding v1.1.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking etc v0.1.8
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking tracing-core v0.1.15
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking wast v21.0.0
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking wit-writer v0.2.0
[INFO] [stderr]     Checking walkdir v2.3.1
[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 unicode-normalization v0.1.13
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking wasm-bindgen-shared v0.2.67
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking wit-parser v0.2.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking filetime v0.2.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking wit-validator v0.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling binaryen-sys v0.10.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking sha-1 v0.9.1
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking headers v0.3.2
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking tungstenite v0.11.1
[INFO] [stderr]     Checking multipart v0.17.0
[INFO] [stderr]     Checking wit-text v0.8.0
[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"' --cfg 'feature="visit-mut"' -C metadata=c5f3ec45d6f8cf82 -C extra-filename=-c5f3ec45d6f8cf82 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0ca7b911c525a03a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-83b4bfbfe428dab5.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-b13daac5d45350a3.rmeta --cap-lints allow --cap-lints=forbid` (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" "acb49741a179d4ea48896fd4c7b486b78861d54f98a49377853edce9619acd72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acb49741a179d4ea48896fd4c7b486b78861d54f98a49377853edce9619acd72", kill_on_drop: false }`
[INFO] [stdout] acb49741a179d4ea48896fd4c7b486b78861d54f98a49377853edce9619acd72