[INFO] updating cached repository benfjohnson/rust_guessing_game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/benfjohnson/rust_guessing_game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/benfjohnson/rust_guessing_game" "work/ex/beta-1.37-6/sources/1.36.0/gh/benfjohnson/rust_guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/benfjohnson/rust_guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/benfjohnson/rust_guessing_game" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benfjohnson/rust_guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benfjohnson/rust_guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a1b080b6f2d8a6fbfc44fa6929613ce2c9a58c9a
[INFO] sha for GitHub repo benfjohnson/rust_guessing_game: a1b080b6f2d8a6fbfc44fa6929613ce2c9a58c9a
[INFO] validating manifest of benfjohnson/rust_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 benfjohnson/rust_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 benfjohnson/rust_guessing_game
[INFO] finished frobbing benfjohnson/rust_guessing_game
[INFO] frobbed toml for benfjohnson/rust_guessing_game written to work/ex/beta-1.37-6/sources/1.36.0/gh/benfjohnson/rust_guessing_game/Cargo.toml
[INFO] started frobbing benfjohnson/rust_guessing_game
[INFO] finished frobbing benfjohnson/rust_guessing_game
[INFO] frobbed toml for benfjohnson/rust_guessing_game written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/benfjohnson/rust_guessing_game/Cargo.toml
[INFO] crate benfjohnson/rust_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/benfjohnson/rust_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[INFO] the lockfile is outdated, regenerating it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 benfjohnson/rust_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-3/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/benfjohnson/rust_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] e3e4c5c548cdd333b596deb3665908f481515fd9a4b95bc6cfc6be6f2eefd0ed
[INFO] running `"docker" "start" "-a" "e3e4c5c548cdd333b596deb3665908f481515fd9a4b95bc6cfc6be6f2eefd0ed"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "e3e4c5c548cdd333b596deb3665908f481515fd9a4b95bc6cfc6be6f2eefd0ed"`
[INFO] running `"docker" "rm" "-f" "e3e4c5c548cdd333b596deb3665908f481515fd9a4b95bc6cfc6be6f2eefd0ed"`
[INFO] [stdout] e3e4c5c548cdd333b596deb3665908f481515fd9a4b95bc6cfc6be6f2eefd0ed
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/benfjohnson/rust_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] 62846e66c1eb86d5566d1c2096092290e765a5ae1bab78ee9ea366cbb464c546
[INFO] running `"docker" "start" "-a" "62846e66c1eb86d5566d1c2096092290e765a5ae1bab78ee9ea366cbb464c546"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "62846e66c1eb86d5566d1c2096092290e765a5ae1bab78ee9ea366cbb464c546"`
[INFO] running `"docker" "rm" "-f" "62846e66c1eb86d5566d1c2096092290e765a5ae1bab78ee9ea366cbb464c546"`
[INFO] [stdout] 62846e66c1eb86d5566d1c2096092290e765a5ae1bab78ee9ea366cbb464c546
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/benfjohnson/rust_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] 56dfdea0093b6ab876866a9b41c3353fa7e26a42895465c1d5a799efb43cd2e7
[INFO] running `"docker" "start" "-a" "56dfdea0093b6ab876866a9b41c3353fa7e26a42895465c1d5a799efb43cd2e7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[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" "56dfdea0093b6ab876866a9b41c3353fa7e26a42895465c1d5a799efb43cd2e7"`
[INFO] running `"docker" "rm" "-f" "56dfdea0093b6ab876866a9b41c3353fa7e26a42895465c1d5a799efb43cd2e7"`
[INFO] [stdout] 56dfdea0093b6ab876866a9b41c3353fa7e26a42895465c1d5a799efb43cd2e7