[INFO] updating cached repository Eriolp/rust-practices
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Eriolp/rust-practices
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Eriolp/rust-practices" "work/ex/beta-1.38-1/sources/1.37.0/gh/Eriolp/rust-practices"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Eriolp/rust-practices'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Eriolp/rust-practices" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Eriolp/rust-practices"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Eriolp/rust-practices'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b10f64277a24e2186d15bddc3d8c6d59832673d2
[INFO] sha for GitHub repo Eriolp/rust-practices: b10f64277a24e2186d15bddc3d8c6d59832673d2
[INFO] validating manifest of Eriolp/rust-practices 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 Eriolp/rust-practices 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 Eriolp/rust-practices
[INFO] finished frobbing Eriolp/rust-practices
[INFO] frobbed toml for Eriolp/rust-practices written to work/ex/beta-1.38-1/sources/1.37.0/gh/Eriolp/rust-practices/Cargo.toml
[INFO] started frobbing Eriolp/rust-practices
[INFO] finished frobbing Eriolp/rust-practices
[INFO] frobbed toml for Eriolp/rust-practices written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Eriolp/rust-practices/Cargo.toml
[INFO] crate Eriolp/rust-practices 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 Eriolp/rust-practices 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Eriolp/rust-practices:/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] ff34a6cda40438cebd39a8dfc283ee7e4a0c86bd00dc89b5b2fd9ff1fdf7fb75
[INFO] running `"docker" "start" "-a" "ff34a6cda40438cebd39a8dfc283ee7e4a0c86bd00dc89b5b2fd9ff1fdf7fb75"`
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.23s
[INFO] running `"docker" "inspect" "ff34a6cda40438cebd39a8dfc283ee7e4a0c86bd00dc89b5b2fd9ff1fdf7fb75"`
[INFO] running `"docker" "rm" "-f" "ff34a6cda40438cebd39a8dfc283ee7e4a0c86bd00dc89b5b2fd9ff1fdf7fb75"`
[INFO] [stdout] ff34a6cda40438cebd39a8dfc283ee7e4a0c86bd00dc89b5b2fd9ff1fdf7fb75
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Eriolp/rust-practices:/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] 469b6b22099eda4ce986f9af3c2c4f1145c2814d20364e1ac5c2fde7e38e7ae6
[INFO] running `"docker" "start" "-a" "469b6b22099eda4ce986f9af3c2c4f1145c2814d20364e1ac5c2fde7e38e7ae6"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "469b6b22099eda4ce986f9af3c2c4f1145c2814d20364e1ac5c2fde7e38e7ae6"`
[INFO] running `"docker" "rm" "-f" "469b6b22099eda4ce986f9af3c2c4f1145c2814d20364e1ac5c2fde7e38e7ae6"`
[INFO] [stdout] 469b6b22099eda4ce986f9af3c2c4f1145c2814d20364e1ac5c2fde7e38e7ae6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Eriolp/rust-practices:/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] 71fb0f7272e204095d1d409647c4f81c33e8c5231a4a514627f025b413528201
[INFO] running `"docker" "start" "-a" "71fb0f7272e204095d1d409647c4f81c33e8c5231a4a514627f025b413528201"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-9425f50ba0020225
[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" "71fb0f7272e204095d1d409647c4f81c33e8c5231a4a514627f025b413528201"`
[INFO] running `"docker" "rm" "-f" "71fb0f7272e204095d1d409647c4f81c33e8c5231a4a514627f025b413528201"`
[INFO] [stdout] 71fb0f7272e204095d1d409647c4f81c33e8c5231a4a514627f025b413528201