[INFO] fetching crate spork 0.0.5...
[INFO] building spork-0.0.5 against try#8aaecdf5df68a6fbc126704e44d399ba2fe66bf2 for pr-94962
[INFO] extracting crate spork 0.0.5 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate spork 0.0.5 on toolchain 8aaecdf5df68a6fbc126704e44d399ba2fe66bf2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8aaecdf5df68a6fbc126704e44d399ba2fe66bf2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spork 0.0.5
[INFO] finished tweaking crates.io crate spork 0.0.5
[INFO] tweaked toml for crates.io crate spork 0.0.5 written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8aaecdf5df68a6fbc126704e44d399ba2fe66bf2" "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" "+8aaecdf5df68a6fbc126704e44d399ba2fe66bf2" "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-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+8aaecdf5df68a6fbc126704e44d399ba2fe66bf2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c80ed0dc3bb719471fe85bced1138d09085f082d86203f5ce2e30c43f39a34cc
[INFO] running `Command { std: "docker" "start" "-a" "c80ed0dc3bb719471fe85bced1138d09085f082d86203f5ce2e30c43f39a34cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c80ed0dc3bb719471fe85bced1138d09085f082d86203f5ce2e30c43f39a34cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c80ed0dc3bb719471fe85bced1138d09085f082d86203f5ce2e30c43f39a34cc", kill_on_drop: false }`
[INFO] [stdout] c80ed0dc3bb719471fe85bced1138d09085f082d86203f5ce2e30c43f39a34cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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=forbid" "-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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+8aaecdf5df68a6fbc126704e44d399ba2fe66bf2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a72d342346c5e82d28ac242db125fd5d83958c4f10a6ced14eda1548eb6e367
[INFO] running `Command { std: "docker" "start" "-a" "4a72d342346c5e82d28ac242db125fd5d83958c4f10a6ced14eda1548eb6e367", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling spork v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "4a72d342346c5e82d28ac242db125fd5d83958c4f10a6ced14eda1548eb6e367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a72d342346c5e82d28ac242db125fd5d83958c4f10a6ced14eda1548eb6e367", kill_on_drop: false }`
[INFO] [stdout] 4a72d342346c5e82d28ac242db125fd5d83958c4f10a6ced14eda1548eb6e367
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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=forbid" "-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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+8aaecdf5df68a6fbc126704e44d399ba2fe66bf2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ef134744cd870d734a2862141bad8278f1224691a05175b8c3dbfb2631d2913
[INFO] running `Command { std: "docker" "start" "-a" "3ef134744cd870d734a2862141bad8278f1224691a05175b8c3dbfb2631d2913", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling spork v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.62s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/spork-bbc56dab66f80d79)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "3ef134744cd870d734a2862141bad8278f1224691a05175b8c3dbfb2631d2913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ef134744cd870d734a2862141bad8278f1224691a05175b8c3dbfb2631d2913", kill_on_drop: false }`
[INFO] [stdout] 3ef134744cd870d734a2862141bad8278f1224691a05175b8c3dbfb2631d2913