[INFO] cloning repository https://github.com/alexander-irbis/cryptocopper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexander-irbis/cryptocopper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexander-irbis%2Fcryptocopper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexander-irbis%2Fcryptocopper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 421633f4d7b0f369f9fb0345f288ab18b70c5a07
[INFO] testing alexander-irbis/cryptocopper against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexander-irbis%2Fcryptocopper" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexander-irbis/cryptocopper on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alexander-irbis/cryptocopper
[INFO] finished tweaking git repo https://github.com/alexander-irbis/cryptocopper
[INFO] tweaked toml for git repo https://github.com/alexander-irbis/cryptocopper written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/alexander-irbis/cryptocopper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30051f7a3e5eb12feed091214e9caa59ae3d057999f8c1cfdf9832dd680cbf16
[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" "30051f7a3e5eb12feed091214e9caa59ae3d057999f8c1cfdf9832dd680cbf16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30051f7a3e5eb12feed091214e9caa59ae3d057999f8c1cfdf9832dd680cbf16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30051f7a3e5eb12feed091214e9caa59ae3d057999f8c1cfdf9832dd680cbf16", kill_on_drop: false }`
[INFO] [stdout] 30051f7a3e5eb12feed091214e9caa59ae3d057999f8c1cfdf9832dd680cbf16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 546dc593f3179f060d864eb39d294deedca4dd605658ff3760835cec26820978
[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" "546dc593f3179f060d864eb39d294deedca4dd605658ff3760835cec26820978", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling futures v0.1.30
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling unwrap v1.2.1
[INFO] [stderr]    Compiling make-cmd v0.1.0
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling os_info v0.7.0
[INFO] [stderr]    Compiling exonum v0.6.1
[INFO] [stderr]    Compiling headers v0.1.0
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling tokio-timer v0.1.2
[INFO] [stderr]    Compiling tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling tokio-timer v0.2.13
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling flate2 v1.0.19
[INFO] [stderr]    Compiling filetime v0.2.13
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling buf_redux v0.6.3
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling tar v0.4.30
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling msdos_time v0.1.6
[INFO] [stderr]    Compiling cookie v0.10.1
[INFO] [stderr]    Compiling chrono v0.4.19
[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-1.0.58/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="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=b0df00d209c7ff71 -C extra-filename=-b0df00d209c7ff71 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b8449736663a1660.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-4ff43fa145cc0264.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-1c0accd586890c80.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" "546dc593f3179f060d864eb39d294deedca4dd605658ff3760835cec26820978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "546dc593f3179f060d864eb39d294deedca4dd605658ff3760835cec26820978", kill_on_drop: false }`
[INFO] [stdout] 546dc593f3179f060d864eb39d294deedca4dd605658ff3760835cec26820978