[INFO] updating cached repository StanislawTerziev/rust_exploration
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/StanislawTerziev/rust_exploration
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/StanislawTerziev/rust_exploration" "work/ex/beta-1.38-1/sources/1.37.0/gh/StanislawTerziev/rust_exploration"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/StanislawTerziev/rust_exploration'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/StanislawTerziev/rust_exploration" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/StanislawTerziev/rust_exploration"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/StanislawTerziev/rust_exploration'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6dfb28996775d20b38f492755cd56399b9948572
[INFO] sha for GitHub repo StanislawTerziev/rust_exploration: 6dfb28996775d20b38f492755cd56399b9948572
[INFO] validating manifest of StanislawTerziev/rust_exploration 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 StanislawTerziev/rust_exploration 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 StanislawTerziev/rust_exploration
[INFO] finished frobbing StanislawTerziev/rust_exploration
[INFO] frobbed toml for StanislawTerziev/rust_exploration written to work/ex/beta-1.38-1/sources/1.37.0/gh/StanislawTerziev/rust_exploration/Cargo.toml
[INFO] started frobbing StanislawTerziev/rust_exploration
[INFO] finished frobbing StanislawTerziev/rust_exploration
[INFO] frobbed toml for StanislawTerziev/rust_exploration written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/StanislawTerziev/rust_exploration/Cargo.toml
[INFO] crate StanislawTerziev/rust_exploration 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 StanislawTerziev/rust_exploration 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/StanislawTerziev/rust_exploration:/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] 48fa118dac7990a56a0dcf6bac713e7019a34b972fd58ed60bcb5c1dcbf96749
[INFO] running `"docker" "start" "-a" "48fa118dac7990a56a0dcf6bac713e7019a34b972fd58ed60bcb5c1dcbf96749"`
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function `loopingWorker` should have a snake case name
[INFO] [stderr]   --> src/string_manipulation.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn loopingWorker(symbol_sequence: &String) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `looping_worker`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "48fa118dac7990a56a0dcf6bac713e7019a34b972fd58ed60bcb5c1dcbf96749"`
[INFO] running `"docker" "rm" "-f" "48fa118dac7990a56a0dcf6bac713e7019a34b972fd58ed60bcb5c1dcbf96749"`
[INFO] [stdout] 48fa118dac7990a56a0dcf6bac713e7019a34b972fd58ed60bcb5c1dcbf96749
[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/StanislawTerziev/rust_exploration:/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] 022b4135c71befde35e68303e98c546721f91a320a59de313492d401b993b644
[INFO] running `"docker" "start" "-a" "022b4135c71befde35e68303e98c546721f91a320a59de313492d401b993b644"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function `loopingWorker` should have a snake case name
[INFO] [stderr]   --> src/string_manipulation.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn loopingWorker(symbol_sequence: &String) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `looping_worker`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "022b4135c71befde35e68303e98c546721f91a320a59de313492d401b993b644"`
[INFO] running `"docker" "rm" "-f" "022b4135c71befde35e68303e98c546721f91a320a59de313492d401b993b644"`
[INFO] [stdout] 022b4135c71befde35e68303e98c546721f91a320a59de313492d401b993b644
[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/StanislawTerziev/rust_exploration:/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] f5cccaa057393edcbcf0019e75a1c3670e34445c798a22bd39bb4a577c112919
[INFO] running `"docker" "start" "-a" "f5cccaa057393edcbcf0019e75a1c3670e34445c798a22bd39bb4a577c112919"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-e41ddfde67f329c8
[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" "f5cccaa057393edcbcf0019e75a1c3670e34445c798a22bd39bb4a577c112919"`
[INFO] running `"docker" "rm" "-f" "f5cccaa057393edcbcf0019e75a1c3670e34445c798a22bd39bb4a577c112919"`
[INFO] [stdout] f5cccaa057393edcbcf0019e75a1c3670e34445c798a22bd39bb4a577c112919