[INFO] fetching crate randomwalk 0.1.3...
[INFO] testing randomwalk-0.1.3 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate randomwalk 0.1.3 into /workspace/builds/worker-55/source
[INFO] validating manifest of crates.io crate randomwalk 0.1.3 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate randomwalk 0.1.3
[INFO] finished tweaking crates.io crate randomwalk 0.1.3
[INFO] tweaked toml for crates.io crate randomwalk 0.1.3 written to /workspace/builds/worker-55/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b7fcc05686a3ae0e3b900a74d4f64b5a36e3a85148fe351c3955f19a4c51e90
[INFO] running `Command { std: "docker" "start" "-a" "6b7fcc05686a3ae0e3b900a74d4f64b5a36e3a85148fe351c3955f19a4c51e90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b7fcc05686a3ae0e3b900a74d4f64b5a36e3a85148fe351c3955f19a4c51e90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b7fcc05686a3ae0e3b900a74d4f64b5a36e3a85148fe351c3955f19a4c51e90", kill_on_drop: false }`
[INFO] [stdout] 6b7fcc05686a3ae0e3b900a74d4f64b5a36e3a85148fe351c3955f19a4c51e90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa11f597c00c43dacbd0b3eb215a9a43c225d8129d6d37dc21e936f8fca71467
[INFO] running `Command { std: "docker" "start" "-a" "aa11f597c00c43dacbd0b3eb215a9a43c225d8129d6d37dc21e936f8fca71467", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_hc v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling randomwalk v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.05s
[INFO] running `Command { std: "docker" "inspect" "aa11f597c00c43dacbd0b3eb215a9a43c225d8129d6d37dc21e936f8fca71467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa11f597c00c43dacbd0b3eb215a9a43c225d8129d6d37dc21e936f8fca71467", kill_on_drop: false }`
[INFO] [stdout] aa11f597c00c43dacbd0b3eb215a9a43c225d8129d6d37dc21e936f8fca71467
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f18004a472052712bf18b5bb78bbd2eb6a04b92b95eb810f23f08801e96674a
[INFO] running `Command { std: "docker" "start" "-a" "7f18004a472052712bf18b5bb78bbd2eb6a04b92b95eb810f23f08801e96674a", kill_on_drop: false }`
[INFO] [stderr]    Compiling randomwalk v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "7f18004a472052712bf18b5bb78bbd2eb6a04b92b95eb810f23f08801e96674a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f18004a472052712bf18b5bb78bbd2eb6a04b92b95eb810f23f08801e96674a", kill_on_drop: false }`
[INFO] [stdout] 7f18004a472052712bf18b5bb78bbd2eb6a04b92b95eb810f23f08801e96674a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1241b0a46d70fd17b41b432f082bcd1513cc85f88db7ba75f0f4fbf5ef48fdab
[INFO] running `Command { std: "docker" "start" "-a" "1241b0a46d70fd17b41b432f082bcd1513cc85f88db7ba75f0f4fbf5ef48fdab", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/randomwalk-8bae96450cf50ae2)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests randomwalk
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1241b0a46d70fd17b41b432f082bcd1513cc85f88db7ba75f0f4fbf5ef48fdab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1241b0a46d70fd17b41b432f082bcd1513cc85f88db7ba75f0f4fbf5ef48fdab", kill_on_drop: false }`
[INFO] [stdout] 1241b0a46d70fd17b41b432f082bcd1513cc85f88db7ba75f0f4fbf5ef48fdab