[INFO] updating cached repository bluecereal/collatz_conjecture
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bluecereal/collatz_conjecture
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bluecereal/collatz_conjecture" "work/ex/beta-1.38-1/sources/1.37.0/gh/bluecereal/collatz_conjecture"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/bluecereal/collatz_conjecture'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bluecereal/collatz_conjecture" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bluecereal/collatz_conjecture"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bluecereal/collatz_conjecture'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 754bf4373fc47bef95f75f7099b83aaa79e80653
[INFO] sha for GitHub repo bluecereal/collatz_conjecture: 754bf4373fc47bef95f75f7099b83aaa79e80653
[INFO] validating manifest of bluecereal/collatz_conjecture 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 bluecereal/collatz_conjecture 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 bluecereal/collatz_conjecture
[INFO] finished frobbing bluecereal/collatz_conjecture
[INFO] frobbed toml for bluecereal/collatz_conjecture written to work/ex/beta-1.38-1/sources/1.37.0/gh/bluecereal/collatz_conjecture/Cargo.toml
[INFO] started frobbing bluecereal/collatz_conjecture
[INFO] finished frobbing bluecereal/collatz_conjecture
[INFO] frobbed toml for bluecereal/collatz_conjecture written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bluecereal/collatz_conjecture/Cargo.toml
[INFO] crate bluecereal/collatz_conjecture 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 bluecereal/collatz_conjecture against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/bluecereal/collatz_conjecture:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] bb2c4296d46c9825c2ac7a56ccc1ed45f26c9561002150db9738c33206145e20
[INFO] running `"docker" "start" "-a" "bb2c4296d46c9825c2ac7a56ccc1ed45f26c9561002150db9738c33206145e20"`
[INFO] [stderr]    Compiling collatz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "bb2c4296d46c9825c2ac7a56ccc1ed45f26c9561002150db9738c33206145e20"`
[INFO] running `"docker" "rm" "-f" "bb2c4296d46c9825c2ac7a56ccc1ed45f26c9561002150db9738c33206145e20"`
[INFO] [stdout] bb2c4296d46c9825c2ac7a56ccc1ed45f26c9561002150db9738c33206145e20
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/bluecereal/collatz_conjecture:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 56bf7ee42a7e774aa82501c35488fd26385ce51b321741702c2481e52ddef002
[INFO] running `"docker" "start" "-a" "56bf7ee42a7e774aa82501c35488fd26385ce51b321741702c2481e52ddef002"`
[INFO] [stderr]    Compiling collatz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "56bf7ee42a7e774aa82501c35488fd26385ce51b321741702c2481e52ddef002"`
[INFO] running `"docker" "rm" "-f" "56bf7ee42a7e774aa82501c35488fd26385ce51b321741702c2481e52ddef002"`
[INFO] [stdout] 56bf7ee42a7e774aa82501c35488fd26385ce51b321741702c2481e52ddef002
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/bluecereal/collatz_conjecture:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 72903b582566edc049cd2148525283ba907af992d0f81f7809063755fd0aab3f
[INFO] running `"docker" "start" "-a" "72903b582566edc049cd2148525283ba907af992d0f81f7809063755fd0aab3f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/collatz-29606f00618640a9
[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" "72903b582566edc049cd2148525283ba907af992d0f81f7809063755fd0aab3f"`
[INFO] running `"docker" "rm" "-f" "72903b582566edc049cd2148525283ba907af992d0f81f7809063755fd0aab3f"`
[INFO] [stdout] 72903b582566edc049cd2148525283ba907af992d0f81f7809063755fd0aab3f