[INFO] updating cached repository liuchong/blockchain-tutorial
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/liuchong/blockchain-tutorial
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/liuchong/blockchain-tutorial" "work/ex/beta-1.37-6/sources/1.36.0/gh/liuchong/blockchain-tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/liuchong/blockchain-tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/liuchong/blockchain-tutorial" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/liuchong/blockchain-tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/liuchong/blockchain-tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d7fd3d0c8438c4893a2305fd2166ee6db8a982d5
[INFO] sha for GitHub repo liuchong/blockchain-tutorial: d7fd3d0c8438c4893a2305fd2166ee6db8a982d5
[INFO] validating manifest of liuchong/blockchain-tutorial on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of liuchong/blockchain-tutorial on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing liuchong/blockchain-tutorial
[INFO] finished frobbing liuchong/blockchain-tutorial
[INFO] frobbed toml for liuchong/blockchain-tutorial written to work/ex/beta-1.37-6/sources/1.36.0/gh/liuchong/blockchain-tutorial/Cargo.toml
[INFO] started frobbing liuchong/blockchain-tutorial
[INFO] finished frobbing liuchong/blockchain-tutorial
[INFO] frobbed toml for liuchong/blockchain-tutorial written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/liuchong/blockchain-tutorial/Cargo.toml
[INFO] crate liuchong/blockchain-tutorial already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing liuchong/blockchain-tutorial against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/liuchong/blockchain-tutorial:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] abe8bf1dc23280d09af4c4f789b6690dc6223c5fb22958b15651a03b8b6162ec
[INFO] running `"docker" "start" "-a" "abe8bf1dc23280d09af4c4f789b6690dc6223c5fb22958b15651a03b8b6162ec"`
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling tokio-current-thread v0.1.4
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling tokio-io v0.1.11
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]    Compiling http v0.1.16
[INFO] [stderr]    Compiling serde_derive v1.0.88
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling dotenv v0.13.0
[INFO] [stderr]    Compiling crossbeam v0.6.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.8
[INFO] [stderr]    Compiling tokio-threadpool v0.1.11
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.15
[INFO] [stderr]    Compiling h2 v0.1.16
[INFO] [stderr]    Compiling hyper v0.12.24
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling blockchain-tutorial v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `"docker" "inspect" "abe8bf1dc23280d09af4c4f789b6690dc6223c5fb22958b15651a03b8b6162ec"`
[INFO] running `"docker" "rm" "-f" "abe8bf1dc23280d09af4c4f789b6690dc6223c5fb22958b15651a03b8b6162ec"`
[INFO] [stdout] abe8bf1dc23280d09af4c4f789b6690dc6223c5fb22958b15651a03b8b6162ec
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/liuchong/blockchain-tutorial:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 358f7e1f7f5818c0dd524b02ba69675be0cd46facff697d594ec83a8ab362142
[INFO] running `"docker" "start" "-a" "358f7e1f7f5818c0dd524b02ba69675be0cd46facff697d594ec83a8ab362142"`
[INFO] [stderr]    Compiling blockchain-tutorial v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `"docker" "inspect" "358f7e1f7f5818c0dd524b02ba69675be0cd46facff697d594ec83a8ab362142"`
[INFO] running `"docker" "rm" "-f" "358f7e1f7f5818c0dd524b02ba69675be0cd46facff697d594ec83a8ab362142"`
[INFO] [stdout] 358f7e1f7f5818c0dd524b02ba69675be0cd46facff697d594ec83a8ab362142
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/liuchong/blockchain-tutorial:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 9a4d11f3e39bb4ddad33216111b44188af53fcd62a4ec372bb6e694f4cf81eb2
[INFO] running `"docker" "start" "-a" "9a4d11f3e39bb4ddad33216111b44188af53fcd62a4ec372bb6e694f4cf81eb2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/blockchain_tutorial-77359c8faf1d3d95
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9a4d11f3e39bb4ddad33216111b44188af53fcd62a4ec372bb6e694f4cf81eb2"`
[INFO] running `"docker" "rm" "-f" "9a4d11f3e39bb4ddad33216111b44188af53fcd62a4ec372bb6e694f4cf81eb2"`
[INFO] [stdout] 9a4d11f3e39bb4ddad33216111b44188af53fcd62a4ec372bb6e694f4cf81eb2