[INFO] fetching crate flipacoin 0.1.0...
[INFO] testing flipacoin-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate flipacoin 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate flipacoin 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flipacoin 0.1.0
[INFO] finished tweaking crates.io crate flipacoin 0.1.0
[INFO] tweaked toml for crates.io crate flipacoin 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate flipacoin 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddcaf3c4b7e88d1d92b47b3ba793fe2309710e07c6d46750ff79f170009184be
[INFO] running `Command { std: "docker" "start" "-a" "ddcaf3c4b7e88d1d92b47b3ba793fe2309710e07c6d46750ff79f170009184be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddcaf3c4b7e88d1d92b47b3ba793fe2309710e07c6d46750ff79f170009184be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddcaf3c4b7e88d1d92b47b3ba793fe2309710e07c6d46750ff79f170009184be", kill_on_drop: false }`
[INFO] [stdout] ddcaf3c4b7e88d1d92b47b3ba793fe2309710e07c6d46750ff79f170009184be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b25dcf499e4cf438f2b07c4ded99b8140c3d314857e8071e5e7ef6334a66fca
[INFO] running `Command { std: "docker" "start" "-a" "4b25dcf499e4cf438f2b07c4ded99b8140c3d314857e8071e5e7ef6334a66fca", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling flipacoin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.71s
[INFO] running `Command { std: "docker" "inspect" "4b25dcf499e4cf438f2b07c4ded99b8140c3d314857e8071e5e7ef6334a66fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b25dcf499e4cf438f2b07c4ded99b8140c3d314857e8071e5e7ef6334a66fca", kill_on_drop: false }`
[INFO] [stdout] 4b25dcf499e4cf438f2b07c4ded99b8140c3d314857e8071e5e7ef6334a66fca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 825b597ffe5b6f562a7bbadf4757cdd62f645bd3579d62b81a0991841e588fd4
[INFO] running `Command { std: "docker" "start" "-a" "825b597ffe5b6f562a7bbadf4757cdd62f645bd3579d62b81a0991841e588fd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling flipacoin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "825b597ffe5b6f562a7bbadf4757cdd62f645bd3579d62b81a0991841e588fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "825b597ffe5b6f562a7bbadf4757cdd62f645bd3579d62b81a0991841e588fd4", kill_on_drop: false }`
[INFO] [stdout] 825b597ffe5b6f562a7bbadf4757cdd62f645bd3579d62b81a0991841e588fd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0790f52b3eced658f2a937512d24b9df7fa506bc5a4b1bec6b54283274f71255
[INFO] running `Command { std: "docker" "start" "-a" "0790f52b3eced658f2a937512d24b9df7fa506bc5a4b1bec6b54283274f71255", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flip-1c8d2c5a25c57786)
[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" "0790f52b3eced658f2a937512d24b9df7fa506bc5a4b1bec6b54283274f71255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0790f52b3eced658f2a937512d24b9df7fa506bc5a4b1bec6b54283274f71255", kill_on_drop: false }`
[INFO] [stdout] 0790f52b3eced658f2a937512d24b9df7fa506bc5a4b1bec6b54283274f71255