[INFO] updating cached repository krixon/knights-tour-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/krixon/knights-tour-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/krixon/knights-tour-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/krixon/knights-tour-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/krixon/knights-tour-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/krixon/knights-tour-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krixon/knights-tour-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krixon/knights-tour-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9cc5756bff781871a102a765ec74a3ea0f5bc3b6
[INFO] sha for GitHub repo krixon/knights-tour-rs: 9cc5756bff781871a102a765ec74a3ea0f5bc3b6
[INFO] validating manifest of krixon/knights-tour-rs 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 krixon/knights-tour-rs 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 krixon/knights-tour-rs
[INFO] finished frobbing krixon/knights-tour-rs
[INFO] frobbed toml for krixon/knights-tour-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/krixon/knights-tour-rs/Cargo.toml
[INFO] started frobbing krixon/knights-tour-rs
[INFO] finished frobbing krixon/knights-tour-rs
[INFO] frobbed toml for krixon/knights-tour-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/krixon/knights-tour-rs/Cargo.toml
[INFO] crate krixon/knights-tour-rs 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 krixon/knights-tour-rs 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-7/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/krixon/knights-tour-rs:/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] 6a249a147e430306ee1787b61f96f6ca8b6f50ed5942ec0e131d3a37eb6c22aa
[INFO] running `"docker" "start" "-a" "6a249a147e430306ee1787b61f96f6ca8b6f50ed5942ec0e131d3a37eb6c22aa"`
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling knights_tour v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.55s
[INFO] running `"docker" "inspect" "6a249a147e430306ee1787b61f96f6ca8b6f50ed5942ec0e131d3a37eb6c22aa"`
[INFO] running `"docker" "rm" "-f" "6a249a147e430306ee1787b61f96f6ca8b6f50ed5942ec0e131d3a37eb6c22aa"`
[INFO] [stdout] 6a249a147e430306ee1787b61f96f6ca8b6f50ed5942ec0e131d3a37eb6c22aa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/krixon/knights-tour-rs:/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] 624c3609c109dd4b5d9e53acc4875fcfeee3ce0240785bee7572bf101e1d35b9
[INFO] running `"docker" "start" "-a" "624c3609c109dd4b5d9e53acc4875fcfeee3ce0240785bee7572bf101e1d35b9"`
[INFO] [stderr]    Compiling knights_tour v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "624c3609c109dd4b5d9e53acc4875fcfeee3ce0240785bee7572bf101e1d35b9"`
[INFO] running `"docker" "rm" "-f" "624c3609c109dd4b5d9e53acc4875fcfeee3ce0240785bee7572bf101e1d35b9"`
[INFO] [stdout] 624c3609c109dd4b5d9e53acc4875fcfeee3ce0240785bee7572bf101e1d35b9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/krixon/knights-tour-rs:/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] 1f32b0e3ab2de12dd88156eaaa53ea864ebf04838e75843a2497303751a0fc45
[INFO] running `"docker" "start" "-a" "1f32b0e3ab2de12dd88156eaaa53ea864ebf04838e75843a2497303751a0fc45"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/knights_tour-18e7162d8e878742
[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" "1f32b0e3ab2de12dd88156eaaa53ea864ebf04838e75843a2497303751a0fc45"`
[INFO] running `"docker" "rm" "-f" "1f32b0e3ab2de12dd88156eaaa53ea864ebf04838e75843a2497303751a0fc45"`
[INFO] [stdout] 1f32b0e3ab2de12dd88156eaaa53ea864ebf04838e75843a2497303751a0fc45