[INFO] updating cached repository rust-playground/guessing-game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rust-playground/guessing-game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rust-playground/guessing-game" "work/ex/beta-1.38-1/sources/1.37.0/gh/rust-playground/guessing-game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rust-playground/guessing-game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rust-playground/guessing-game" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rust-playground/guessing-game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rust-playground/guessing-game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c4671129fbda24f5eca7354636c0ddd2fde9e7cb
[INFO] sha for GitHub repo rust-playground/guessing-game: c4671129fbda24f5eca7354636c0ddd2fde9e7cb
[INFO] validating manifest of rust-playground/guessing-game 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 rust-playground/guessing-game 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 rust-playground/guessing-game
[INFO] finished frobbing rust-playground/guessing-game
[INFO] frobbed toml for rust-playground/guessing-game written to work/ex/beta-1.38-1/sources/1.37.0/gh/rust-playground/guessing-game/Cargo.toml
[INFO] started frobbing rust-playground/guessing-game
[INFO] finished frobbing rust-playground/guessing-game
[INFO] frobbed toml for rust-playground/guessing-game written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rust-playground/guessing-game/Cargo.toml
[INFO] crate rust-playground/guessing-game 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 rust-playground/guessing-game 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rust-playground/guessing-game:/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] 4d097b0f83bc8caee4d447f887d8d5ec9b78299712f1501084baf00f062507bc
[INFO] running `"docker" "start" "-a" "4d097b0f83bc8caee4d447f887d8d5ec9b78299712f1501084baf00f062507bc"`
[INFO] [stderr]    Compiling guessing-game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "4d097b0f83bc8caee4d447f887d8d5ec9b78299712f1501084baf00f062507bc"`
[INFO] running `"docker" "rm" "-f" "4d097b0f83bc8caee4d447f887d8d5ec9b78299712f1501084baf00f062507bc"`
[INFO] [stdout] 4d097b0f83bc8caee4d447f887d8d5ec9b78299712f1501084baf00f062507bc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rust-playground/guessing-game:/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] d4204a0fa6aa7e9e6392852c8f6975106785edc4acf0e15ddc9c3a26248434dd
[INFO] running `"docker" "start" "-a" "d4204a0fa6aa7e9e6392852c8f6975106785edc4acf0e15ddc9c3a26248434dd"`
[INFO] [stderr]    Compiling guessing-game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "d4204a0fa6aa7e9e6392852c8f6975106785edc4acf0e15ddc9c3a26248434dd"`
[INFO] running `"docker" "rm" "-f" "d4204a0fa6aa7e9e6392852c8f6975106785edc4acf0e15ddc9c3a26248434dd"`
[INFO] [stdout] d4204a0fa6aa7e9e6392852c8f6975106785edc4acf0e15ddc9c3a26248434dd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rust-playground/guessing-game:/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] 2f71f230d8401d56fe35cda2ef7fc84ddfa6ba9b8da4adba5fbb586b3e07cd0c
[INFO] running `"docker" "start" "-a" "2f71f230d8401d56fe35cda2ef7fc84ddfa6ba9b8da4adba5fbb586b3e07cd0c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-a73b4e914f4fcdb0
[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" "2f71f230d8401d56fe35cda2ef7fc84ddfa6ba9b8da4adba5fbb586b3e07cd0c"`
[INFO] running `"docker" "rm" "-f" "2f71f230d8401d56fe35cda2ef7fc84ddfa6ba9b8da4adba5fbb586b3e07cd0c"`
[INFO] [stdout] 2f71f230d8401d56fe35cda2ef7fc84ddfa6ba9b8da4adba5fbb586b3e07cd0c