[INFO] updating cached repository kaidadragonfly/rust-book-guessing-game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kaidadragonfly/rust-book-guessing-game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kaidadragonfly/rust-book-guessing-game" "work/ex/beta-1.37-6/sources/1.36.0/gh/kaidadragonfly/rust-book-guessing-game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/kaidadragonfly/rust-book-guessing-game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kaidadragonfly/rust-book-guessing-game" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kaidadragonfly/rust-book-guessing-game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kaidadragonfly/rust-book-guessing-game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8f53b43afe35a999070ee103e9d6c8d9ead03fdc
[INFO] sha for GitHub repo kaidadragonfly/rust-book-guessing-game: 8f53b43afe35a999070ee103e9d6c8d9ead03fdc
[INFO] validating manifest of kaidadragonfly/rust-book-guessing-game on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kaidadragonfly/rust-book-guessing-game on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kaidadragonfly/rust-book-guessing-game
[INFO] finished frobbing kaidadragonfly/rust-book-guessing-game
[INFO] frobbed toml for kaidadragonfly/rust-book-guessing-game written to work/ex/beta-1.37-6/sources/1.36.0/gh/kaidadragonfly/rust-book-guessing-game/Cargo.toml
[INFO] started frobbing kaidadragonfly/rust-book-guessing-game
[INFO] finished frobbing kaidadragonfly/rust-book-guessing-game
[INFO] frobbed toml for kaidadragonfly/rust-book-guessing-game written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kaidadragonfly/rust-book-guessing-game/Cargo.toml
[INFO] crate kaidadragonfly/rust-book-guessing-game already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kaidadragonfly/rust-book-guessing-game/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kaidadragonfly/rust-book-guessing-game against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kaidadragonfly/rust-book-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 51d5316786df8e4281a7c507c7b44a7c0519c1df74751e1136aa0a888b44b440
[INFO] running `"docker" "start" "-a" "51d5316786df8e4281a7c507c7b44a7c0519c1df74751e1136aa0a888b44b440"`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `"docker" "inspect" "51d5316786df8e4281a7c507c7b44a7c0519c1df74751e1136aa0a888b44b440"`
[INFO] running `"docker" "rm" "-f" "51d5316786df8e4281a7c507c7b44a7c0519c1df74751e1136aa0a888b44b440"`
[INFO] [stdout] 51d5316786df8e4281a7c507c7b44a7c0519c1df74751e1136aa0a888b44b440
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kaidadragonfly/rust-book-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4e23e89ce74ebdf0b739d1faf14d5a34f243680273f89413cc3c0410fddde2e4
[INFO] running `"docker" "start" "-a" "4e23e89ce74ebdf0b739d1faf14d5a34f243680273f89413cc3c0410fddde2e4"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "4e23e89ce74ebdf0b739d1faf14d5a34f243680273f89413cc3c0410fddde2e4"`
[INFO] running `"docker" "rm" "-f" "4e23e89ce74ebdf0b739d1faf14d5a34f243680273f89413cc3c0410fddde2e4"`
[INFO] [stdout] 4e23e89ce74ebdf0b739d1faf14d5a34f243680273f89413cc3c0410fddde2e4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kaidadragonfly/rust-book-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 7fe87ef9932ff1dcc2ae51185d640460127d8cba288b7b0167b48d2748aef8c7
[INFO] running `"docker" "start" "-a" "7fe87ef9932ff1dcc2ae51185d640460127d8cba288b7b0167b48d2748aef8c7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-e6d3c22e39ae6a54
[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" "7fe87ef9932ff1dcc2ae51185d640460127d8cba288b7b0167b48d2748aef8c7"`
[INFO] running `"docker" "rm" "-f" "7fe87ef9932ff1dcc2ae51185d640460127d8cba288b7b0167b48d2748aef8c7"`
[INFO] [stdout] 7fe87ef9932ff1dcc2ae51185d640460127d8cba288b7b0167b48d2748aef8c7