[INFO] fetching crate cold-io 0.2.0...
[INFO] testing cold-io-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate cold-io 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cold-io 0.2.0 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 cold-io 0.2.0
[INFO] finished tweaking crates.io crate cold-io 0.2.0
[INFO] tweaked toml for crates.io crate cold-io 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate cold-io 0.2.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded ctrlc v3.2.0
[INFO] [stderr]   Downloaded libc v0.2.100
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 06f44cbfc8ad583bffc7924ea18c92ce8a0ed4c3577e2d704621ccfaa78b7e6a
[INFO] running `Command { std: "docker" "start" "-a" "06f44cbfc8ad583bffc7924ea18c92ce8a0ed4c3577e2d704621ccfaa78b7e6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06f44cbfc8ad583bffc7924ea18c92ce8a0ed4c3577e2d704621ccfaa78b7e6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06f44cbfc8ad583bffc7924ea18c92ce8a0ed4c3577e2d704621ccfaa78b7e6a", kill_on_drop: false }`
[INFO] [stdout] 06f44cbfc8ad583bffc7924ea18c92ce8a0ed4c3577e2d704621ccfaa78b7e6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 060535936fa5a82f7d2d521b7b6f637d87d1486352b7b4f03a287f5a88e4c991
[INFO] running `Command { std: "docker" "start" "-a" "060535936fa5a82f7d2d521b7b6f637d87d1486352b7b4f03a287f5a88e4c991", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling cold-io v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.65s
[INFO] running `Command { std: "docker" "inspect" "060535936fa5a82f7d2d521b7b6f637d87d1486352b7b4f03a287f5a88e4c991", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "060535936fa5a82f7d2d521b7b6f637d87d1486352b7b4f03a287f5a88e4c991", kill_on_drop: false }`
[INFO] [stdout] 060535936fa5a82f7d2d521b7b6f637d87d1486352b7b4f03a287f5a88e4c991
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] d32fc5dc88e9159c4f800255f865a09f539398adff6673614bed4ad71be09cd7
[INFO] running `Command { std: "docker" "start" "-a" "d32fc5dc88e9159c4f800255f865a09f539398adff6673614bed4ad71be09cd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling nix v0.22.1
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling ctrlc v3.2.0
[INFO] [stderr]    Compiling cold-io v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.54s
[INFO] running `Command { std: "docker" "inspect" "d32fc5dc88e9159c4f800255f865a09f539398adff6673614bed4ad71be09cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d32fc5dc88e9159c4f800255f865a09f539398adff6673614bed4ad71be09cd7", kill_on_drop: false }`
[INFO] [stdout] d32fc5dc88e9159c4f800255f865a09f539398adff6673614bed4ad71be09cd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 441fb01a86d368a262bf35c4754178c29b620529e0381472c49a3bd737068838
[INFO] running `Command { std: "docker" "start" "-a" "441fb01a86d368a262bf35c4754178c29b620529e0381472c49a3bd737068838", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cold_io-1aafebe0dd1eabe7)
[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] [stderr]    Doc-tests cold-io
[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" "441fb01a86d368a262bf35c4754178c29b620529e0381472c49a3bd737068838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "441fb01a86d368a262bf35c4754178c29b620529e0381472c49a3bd737068838", kill_on_drop: false }`
[INFO] [stdout] 441fb01a86d368a262bf35c4754178c29b620529e0381472c49a3bd737068838