[INFO] updating cached repository howlowck/learn-ml-in-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/howlowck/learn-ml-in-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/howlowck/learn-ml-in-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/howlowck/learn-ml-in-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/howlowck/learn-ml-in-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/howlowck/learn-ml-in-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howlowck/learn-ml-in-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howlowck/learn-ml-in-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0f1a5e20c5e3eb14c70a4fb2fee0b3962d99da12
[INFO] sha for GitHub repo howlowck/learn-ml-in-rust: 0f1a5e20c5e3eb14c70a4fb2fee0b3962d99da12
[INFO] validating manifest of howlowck/learn-ml-in-rust 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 howlowck/learn-ml-in-rust 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 howlowck/learn-ml-in-rust
[INFO] finished frobbing howlowck/learn-ml-in-rust
[INFO] frobbed toml for howlowck/learn-ml-in-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/howlowck/learn-ml-in-rust/Cargo.toml
[INFO] started frobbing howlowck/learn-ml-in-rust
[INFO] finished frobbing howlowck/learn-ml-in-rust
[INFO] frobbed toml for howlowck/learn-ml-in-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howlowck/learn-ml-in-rust/Cargo.toml
[INFO] crate howlowck/learn-ml-in-rust 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 howlowck/learn-ml-in-rust 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/howlowck/learn-ml-in-rust:/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] 67a97b3042f8298faa0e193a6350dddcc576945cf2da856926f7a3b78ee43424
[INFO] running `"docker" "start" "-a" "67a97b3042f8298faa0e193a6350dddcc576945cf2da856926f7a3b78ee43424"`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling rand_os v0.1.1
[INFO] [stderr]    Compiling clicolors-control v1.0.0
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling console v0.7.2
[INFO] [stderr]    Compiling learn-ml-in-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.19s
[INFO] running `"docker" "inspect" "67a97b3042f8298faa0e193a6350dddcc576945cf2da856926f7a3b78ee43424"`
[INFO] running `"docker" "rm" "-f" "67a97b3042f8298faa0e193a6350dddcc576945cf2da856926f7a3b78ee43424"`
[INFO] [stdout] 67a97b3042f8298faa0e193a6350dddcc576945cf2da856926f7a3b78ee43424
[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/howlowck/learn-ml-in-rust:/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] 4f1552f75de0a2eb2a529656f47f7e5de7b1533432fc64a14d63c3c0d926f68a
[INFO] running `"docker" "start" "-a" "4f1552f75de0a2eb2a529656f47f7e5de7b1533432fc64a14d63c3c0d926f68a"`
[INFO] [stderr]    Compiling learn-ml-in-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "4f1552f75de0a2eb2a529656f47f7e5de7b1533432fc64a14d63c3c0d926f68a"`
[INFO] running `"docker" "rm" "-f" "4f1552f75de0a2eb2a529656f47f7e5de7b1533432fc64a14d63c3c0d926f68a"`
[INFO] [stdout] 4f1552f75de0a2eb2a529656f47f7e5de7b1533432fc64a14d63c3c0d926f68a
[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/howlowck/learn-ml-in-rust:/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] 70d820a7a3c7ec62cdf20897c1b8b282142d76afb52dc1c505f9f0abd0f55862
[INFO] running `"docker" "start" "-a" "70d820a7a3c7ec62cdf20897c1b8b282142d76afb52dc1c505f9f0abd0f55862"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learn_ml_in_rust-ec3ed8457b9411cb
[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" "70d820a7a3c7ec62cdf20897c1b8b282142d76afb52dc1c505f9f0abd0f55862"`
[INFO] running `"docker" "rm" "-f" "70d820a7a3c7ec62cdf20897c1b8b282142d76afb52dc1c505f9f0abd0f55862"`
[INFO] [stdout] 70d820a7a3c7ec62cdf20897c1b8b282142d76afb52dc1c505f9f0abd0f55862