[INFO] fetching crate volut 0.0.0...
[INFO] testing volut-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate volut 0.0.0 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate volut 0.0.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate volut 0.0.0
[INFO] finished tweaking crates.io crate volut 0.0.0
[INFO] tweaked toml for crates.io crate volut 0.0.0 written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate crates.io crate volut 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d92dfbe586760c73e93d4cd73f5cf587361be1cdd8ba4b84c1d2fc3e214cb11
[INFO] running `Command { std: "docker" "start" "-a" "6d92dfbe586760c73e93d4cd73f5cf587361be1cdd8ba4b84c1d2fc3e214cb11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d92dfbe586760c73e93d4cd73f5cf587361be1cdd8ba4b84c1d2fc3e214cb11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d92dfbe586760c73e93d4cd73f5cf587361be1cdd8ba4b84c1d2fc3e214cb11", kill_on_drop: false }`
[INFO] [stdout] 6d92dfbe586760c73e93d4cd73f5cf587361be1cdd8ba4b84c1d2fc3e214cb11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2d2a12f45c17f5de9fa7377f5f3620cd37b675eb092937de0ad189c3b4009e8
[INFO] running `Command { std: "docker" "start" "-a" "e2d2a12f45c17f5de9fa7377f5f3620cd37b675eb092937de0ad189c3b4009e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling volut v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "e2d2a12f45c17f5de9fa7377f5f3620cd37b675eb092937de0ad189c3b4009e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2d2a12f45c17f5de9fa7377f5f3620cd37b675eb092937de0ad189c3b4009e8", kill_on_drop: false }`
[INFO] [stdout] e2d2a12f45c17f5de9fa7377f5f3620cd37b675eb092937de0ad189c3b4009e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 161b497781651740277d48ce84550172509d4f18bb8b9b3fbd5b333f4e22818c
[INFO] running `Command { std: "docker" "start" "-a" "161b497781651740277d48ce84550172509d4f18bb8b9b3fbd5b333f4e22818c", kill_on_drop: false }`
[INFO] [stderr]    Compiling volut v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "161b497781651740277d48ce84550172509d4f18bb8b9b3fbd5b333f4e22818c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "161b497781651740277d48ce84550172509d4f18bb8b9b3fbd5b333f4e22818c", kill_on_drop: false }`
[INFO] [stdout] 161b497781651740277d48ce84550172509d4f18bb8b9b3fbd5b333f4e22818c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9aef9fae83a036030b883003edff55e5ca0fbad2fce12b9f35f6c2c8f7b7989f
[INFO] running `Command { std: "docker" "start" "-a" "9aef9fae83a036030b883003edff55e5ca0fbad2fce12b9f35f6c2c8f7b7989f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/volut-7a4e539158c53ef4)
[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" "9aef9fae83a036030b883003edff55e5ca0fbad2fce12b9f35f6c2c8f7b7989f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aef9fae83a036030b883003edff55e5ca0fbad2fce12b9f35f6c2c8f7b7989f", kill_on_drop: false }`
[INFO] [stdout] 9aef9fae83a036030b883003edff55e5ca0fbad2fce12b9f35f6c2c8f7b7989f