[INFO] cloning repository https://github.com/gleicon/parquet-explorer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gleicon/parquet-explorer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgleicon%2Fparquet-explorer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgleicon%2Fparquet-explorer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebb39fdac8e82ff0ae19db177c760a349ee35535
[INFO] testing gleicon/parquet-explorer against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgleicon%2Fparquet-explorer" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gleicon/parquet-explorer on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gleicon/parquet-explorer
[INFO] finished tweaking git repo https://github.com/gleicon/parquet-explorer
[INFO] tweaked toml for git repo https://github.com/gleicon/parquet-explorer written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/gleicon/parquet-explorer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdff5c8c0bd76bbc7a8cb5b6c6797f7f90d89bc38e94fc9108581e6fb4474eff
[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" "cdff5c8c0bd76bbc7a8cb5b6c6797f7f90d89bc38e94fc9108581e6fb4474eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdff5c8c0bd76bbc7a8cb5b6c6797f7f90d89bc38e94fc9108581e6fb4474eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdff5c8c0bd76bbc7a8cb5b6c6797f7f90d89bc38e94fc9108581e6fb4474eff", kill_on_drop: false }`
[INFO] [stdout] cdff5c8c0bd76bbc7a8cb5b6c6797f7f90d89bc38e94fc9108581e6fb4474eff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d67e385bf4818c8e91b9a287d427d626c5c32fa52f5bca96a9e1a096a637b84
[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" "4d67e385bf4818c8e91b9a287d427d626c5c32fa52f5bca96a9e1a096a637b84", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling zstd-safe v4.1.0+zstd.1.5.0
[INFO] [stderr]    Compiling alloc-no-stdlib v2.0.1
[INFO] [stderr]    Compiling snap v1.0.5
[INFO] [stderr]    Compiling integer-encoding v1.1.7
[INFO] [stderr]    Compiling parquet v4.3.0
[INFO] [stderr]    Compiling tokio v1.7.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling sqlparser v0.9.0
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling ordered-float v2.5.1
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling alloc-stdlib v0.2.1
[INFO] [stderr]    Compiling smallstr v0.2.0
[INFO] [stderr]    Compiling brotli-decompressor v2.3.1
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling brotli v3.3.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling jobserver v0.1.22
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling nix v0.19.1
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling thrift v0.13.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling zstd-sys v1.6.0+zstd.1.5.0
[INFO] [stderr]    Compiling lz4-sys v1.9.2
[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-mut"' -C metadata=bebec5d97b04b61d -C extra-filename=-bebec5d97b04b61d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-283fad16493adf62.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cf6158c23ff62a4c.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-5ecee5fca1210f52.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" "4d67e385bf4818c8e91b9a287d427d626c5c32fa52f5bca96a9e1a096a637b84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d67e385bf4818c8e91b9a287d427d626c5c32fa52f5bca96a9e1a096a637b84", kill_on_drop: false }`
[INFO] [stdout] 4d67e385bf4818c8e91b9a287d427d626c5c32fa52f5bca96a9e1a096a637b84