[INFO] fetching crate snarl 0.0.1...
[INFO] building snarl-0.0.1 against try#615edd3ad1cf6871c977dc900317cb6c2070fd6b for pr-97334
[INFO] extracting crate snarl 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate snarl 0.0.1 on toolchain 615edd3ad1cf6871c977dc900317cb6c2070fd6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snarl 0.0.1
[INFO] finished tweaking crates.io crate snarl 0.0.1
[INFO] tweaked toml for crates.io crate snarl 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "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" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 453df66a116159b3001cc2c0e2434c9184f6fbdb887554b6eadaa4df37d35fed
[INFO] running `Command { std: "docker" "start" "-a" "453df66a116159b3001cc2c0e2434c9184f6fbdb887554b6eadaa4df37d35fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "453df66a116159b3001cc2c0e2434c9184f6fbdb887554b6eadaa4df37d35fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "453df66a116159b3001cc2c0e2434c9184f6fbdb887554b6eadaa4df37d35fed", kill_on_drop: false }`
[INFO] [stdout] 453df66a116159b3001cc2c0e2434c9184f6fbdb887554b6eadaa4df37d35fed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85727425febf5f6e744cdfef754a16bed80295ef3fbd3ad09d6fd40f67fae1fe
[INFO] running `Command { std: "docker" "start" "-a" "85727425febf5f6e744cdfef754a16bed80295ef3fbd3ad09d6fd40f67fae1fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling snarl v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "85727425febf5f6e744cdfef754a16bed80295ef3fbd3ad09d6fd40f67fae1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85727425febf5f6e744cdfef754a16bed80295ef3fbd3ad09d6fd40f67fae1fe", kill_on_drop: false }`
[INFO] [stdout] 85727425febf5f6e744cdfef754a16bed80295ef3fbd3ad09d6fd40f67fae1fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 678bc856c6e00f7412f16f6d76c86f00f950ebec2afdb62c1b4806952afba0ba
[INFO] running `Command { std: "docker" "start" "-a" "678bc856c6e00f7412f16f6d76c86f00f950ebec2afdb62c1b4806952afba0ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling snarl v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/snarl-eeccb7ef8593ef0d)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/snarl-9b834d75617cdb47)
[INFO] [stderr]   Executable tests/test_union_find.rs (/opt/rustwide/target/debug/deps/test_union_find-61ba07a7b4b9f11f)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "678bc856c6e00f7412f16f6d76c86f00f950ebec2afdb62c1b4806952afba0ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678bc856c6e00f7412f16f6d76c86f00f950ebec2afdb62c1b4806952afba0ba", kill_on_drop: false }`
[INFO] [stdout] 678bc856c6e00f7412f16f6d76c86f00f950ebec2afdb62c1b4806952afba0ba