[INFO] fetching crate grin_miner_config 0.5.2...
[INFO] testing grin_miner_config-0.5.2 against 1.60.0 for beta-1.61-1
[INFO] extracting crate grin_miner_config 0.5.2 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate grin_miner_config 0.5.2 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grin_miner_config 0.5.2
[INFO] finished tweaking crates.io crate grin_miner_config 0.5.2
[INFO] tweaked toml for crates.io crate grin_miner_config 0.5.2 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded grin_miner_util v0.5.2
[INFO] [stderr]   Downloaded grin_miner_plugin v0.5.2
[INFO] [stderr]   Downloaded cuckoo_miner v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e29df88affc8c9b74b0c7ccb36f430916c170fc785c3ee6b46403cd85fc99c95
[INFO] running `Command { std: "docker" "start" "-a" "e29df88affc8c9b74b0c7ccb36f430916c170fc785c3ee6b46403cd85fc99c95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e29df88affc8c9b74b0c7ccb36f430916c170fc785c3ee6b46403cd85fc99c95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e29df88affc8c9b74b0c7ccb36f430916c170fc785c3ee6b46403cd85fc99c95", kill_on_drop: false }`
[INFO] [stdout] e29df88affc8c9b74b0c7ccb36f430916c170fc785c3ee6b46403cd85fc99c95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2849848a32d0f4b78f1a79db6a7570d68d9aced151768feff6aab3e93eab752a
[INFO] running `Command { std: "docker" "start" "-a" "2849848a32d0f4b78f1a79db6a7570d68d9aced151768feff6aab3e93eab752a", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling slog v2.1.1
[INFO] [stderr]    Compiling slog-async v2.7.0
[INFO] [stderr]    Compiling time-macros v0.2.4
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling num_threads v0.1.5
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling cmake v0.1.48
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling cuckoo_miner v0.5.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling time v0.3.9
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[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-1.0.91/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --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="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=2d009013cfb8c782 -C extra-filename=-2d009013cfb8c782 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-adfd7b1b4588a8fe.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-aa6c9ed6a3b65ac7.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-d8167d72773bee47.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" "2849848a32d0f4b78f1a79db6a7570d68d9aced151768feff6aab3e93eab752a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2849848a32d0f4b78f1a79db6a7570d68d9aced151768feff6aab3e93eab752a", kill_on_drop: false }`
[INFO] [stdout] 2849848a32d0f4b78f1a79db6a7570d68d9aced151768feff6aab3e93eab752a