[INFO] updating cached repository CzarSimon/rust_tutorial
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CzarSimon/rust_tutorial
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CzarSimon/rust_tutorial" "work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CzarSimon/rust_tutorial" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cbd2e2cdd95dd071fc5d21eb3bf5c9fdd1bb2e16
[INFO] sha for GitHub repo CzarSimon/rust_tutorial: cbd2e2cdd95dd071fc5d21eb3bf5c9fdd1bb2e16
[INFO] validating manifest of CzarSimon/rust_tutorial on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CzarSimon/rust_tutorial on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CzarSimon/rust_tutorial
[INFO] finished frobbing CzarSimon/rust_tutorial
[INFO] frobbed toml for CzarSimon/rust_tutorial written to work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial/Cargo.toml
[INFO] started frobbing CzarSimon/rust_tutorial
[INFO] finished frobbing CzarSimon/rust_tutorial
[INFO] frobbed toml for CzarSimon/rust_tutorial written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_tutorial/Cargo.toml
[INFO] crate CzarSimon/rust_tutorial already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing CzarSimon/rust_tutorial against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] cc06c9e6764c2b318e96a5bd3783850b6a2095f12f97e1b0eb4d49da551e32e9
[INFO] running `"docker" "start" "-a" "cc06c9e6764c2b318e96a5bd3783850b6a2095f12f97e1b0eb4d49da551e32e9"`
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling rust_tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
[INFO] running `"docker" "inspect" "cc06c9e6764c2b318e96a5bd3783850b6a2095f12f97e1b0eb4d49da551e32e9"`
[INFO] running `"docker" "rm" "-f" "cc06c9e6764c2b318e96a5bd3783850b6a2095f12f97e1b0eb4d49da551e32e9"`
[INFO] [stdout] cc06c9e6764c2b318e96a5bd3783850b6a2095f12f97e1b0eb4d49da551e32e9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 82e081a7cf07947f732ff6f049404aa2cacbcf0f8b78b304ebac48ba2de2fb92
[INFO] running `"docker" "start" "-a" "82e081a7cf07947f732ff6f049404aa2cacbcf0f8b78b304ebac48ba2de2fb92"`
[INFO] [stderr]    Compiling rust_tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "82e081a7cf07947f732ff6f049404aa2cacbcf0f8b78b304ebac48ba2de2fb92"`
[INFO] running `"docker" "rm" "-f" "82e081a7cf07947f732ff6f049404aa2cacbcf0f8b78b304ebac48ba2de2fb92"`
[INFO] [stdout] 82e081a7cf07947f732ff6f049404aa2cacbcf0f8b78b304ebac48ba2de2fb92
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 8455e4ae809ea1b2137413df07a03c9b92794d6d5da31331bb2df7282b59273f
[INFO] running `"docker" "start" "-a" "8455e4ae809ea1b2137413df07a03c9b92794d6d5da31331bb2df7282b59273f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_tutorial-4ee40f03fc65c613
[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" "8455e4ae809ea1b2137413df07a03c9b92794d6d5da31331bb2df7282b59273f"`
[INFO] running `"docker" "rm" "-f" "8455e4ae809ea1b2137413df07a03c9b92794d6d5da31331bb2df7282b59273f"`
[INFO] [stdout] 8455e4ae809ea1b2137413df07a03c9b92794d6d5da31331bb2df7282b59273f