[INFO] cloning repository https://github.com/jansu-dev/KWC
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jansu-dev/KWC" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjansu-dev%2FKWC", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjansu-dev%2FKWC'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ec98f3f7daf2605c1c784da9b6a3b7a473e5b7a
[INFO] checking jansu-dev/KWC against beta-2021-10-15 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjansu-dev%2FKWC" "/workspace/builds/worker-54/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-54/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jansu-dev/KWC on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jansu-dev/KWC
[INFO] finished tweaking git repo https://github.com/jansu-dev/KWC
[INFO] tweaked toml for git repo https://github.com/jansu-dev/KWC written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] crate git repo https://github.com/jansu-dev/KWC already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 014a966f911be0f05ce914c21388a2cced6dfad40de54318179ba1fd66f595dc
[INFO] running `Command { std: "docker" "start" "-a" "014a966f911be0f05ce914c21388a2cced6dfad40de54318179ba1fd66f595dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "014a966f911be0f05ce914c21388a2cced6dfad40de54318179ba1fd66f595dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "014a966f911be0f05ce914c21388a2cced6dfad40de54318179ba1fd66f595dc", kill_on_drop: false }`
[INFO] [stdout] 014a966f911be0f05ce914c21388a2cced6dfad40de54318179ba1fd66f595dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b31a5f480bb5324434d4bf324719d679433355798d4b1d646ea7b38c31c05d5
[INFO] running `Command { std: "docker" "start" "-a" "4b31a5f480bb5324434d4bf324719d679433355798d4b1d646ea7b38c31c05d5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling mysql v20.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.19
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking arc-swap v0.4.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling io-enum v0.2.6
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking paste v0.1.18
[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-1.0.73/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"' -C metadata=bff4d38767299e23 -C extra-filename=-bff4d38767299e23 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e476eeba35620bc2.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-7cec808d916b2240.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-11d097b41f2e60a4.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" "4b31a5f480bb5324434d4bf324719d679433355798d4b1d646ea7b38c31c05d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b31a5f480bb5324434d4bf324719d679433355798d4b1d646ea7b38c31c05d5", kill_on_drop: false }`
[INFO] [stdout] 4b31a5f480bb5324434d4bf324719d679433355798d4b1d646ea7b38c31c05d5