[INFO] fetching crate gantry 0.0.9...
[INFO] testing gantry-0.0.9 against 1.55.0 for beta-1.56-1
[INFO] extracting crate gantry 0.0.9 into /workspace/builds/worker-69/source
[INFO] validating manifest of crates.io crate gantry 0.0.9 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 crates.io crate gantry 0.0.9
[INFO] finished tweaking crates.io crate gantry 0.0.9
[INFO] tweaked toml for crates.io crate gantry 0.0.9 written to /workspace/builds/worker-69/source/Cargo.toml
[INFO] crate crates.io crate gantry 0.0.9 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] 6ffb22bd4f0cab30a1da38729e0273f7f4f05ac634599ba71a28bf2b12f48c15
[INFO] running `Command { std: "docker" "start" "-a" "6ffb22bd4f0cab30a1da38729e0273f7f4f05ac634599ba71a28bf2b12f48c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ffb22bd4f0cab30a1da38729e0273f7f4f05ac634599ba71a28bf2b12f48c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ffb22bd4f0cab30a1da38729e0273f7f4f05ac634599ba71a28bf2b12f48c15", kill_on_drop: false }`
[INFO] [stdout] 6ffb22bd4f0cab30a1da38729e0273f7f4f05ac634599ba71a28bf2b12f48c15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] 639593c782dc9bfbd64e8fb5fac586351b9053e62a4c5d352ef5bc4d9adb1bf1
[INFO] running `Command { std: "docker" "start" "-a" "639593c782dc9bfbd64e8fb5fac586351b9053e62a4c5d352ef5bc4d9adb1bf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling cc v1.0.53
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling object v0.19.0
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling subtle v2.2.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling event-listener v2.4.0
[INFO] [stderr]    Compiling fastrand v1.3.5
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling zeroize v1.1.0
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec-arena v0.5.2
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling data-encoding v2.3.0
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling parking v1.0.6
[INFO] [stderr]    Compiling easy-parallel v3.1.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling parity-wasm v0.41.0
[INFO] [stderr]    Compiling dtoa v0.4.5
[INFO] [stderr]    Compiling text_io v0.1.8
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling subtle-encoding v0.4.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling multitask v0.2.0
[INFO] [stderr]    Compiling async-channel v1.4.2
[INFO] [stderr]    Compiling simple-mutex v1.1.5
[INFO] [stderr]    Compiling async-mutex v1.3.0
[INFO] [stderr] error: could not compile `version_check`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name version_check /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/version_check-0.9.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=242a143e32259c8c -C extra-filename=-242a143e32259c8c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (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" "639593c782dc9bfbd64e8fb5fac586351b9053e62a4c5d352ef5bc4d9adb1bf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "639593c782dc9bfbd64e8fb5fac586351b9053e62a4c5d352ef5bc4d9adb1bf1", kill_on_drop: false }`
[INFO] [stdout] 639593c782dc9bfbd64e8fb5fac586351b9053e62a4c5d352ef5bc4d9adb1bf1